1
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Redenbaugh V, Fryer JP, Cacciaguerra L, Chen JJ, Greenwood TM, Gilligan M, Thakolwiboon S, Majed M, Chia NH, McKeon A, Mills JR, Lopez Chiriboga AS, Tillema JM, Yang B, Abdulrahman Y, Guo K, Vorasoot N, Valencia Sanchez C, Tajfirouz DA, Toledano M, Zekeridou A, Dubey D, Gombolay GY, Caparó-Zamalloa C, Kister I, Pittock SJ, Flanagan EP. Diagnostic Utility of MOG Antibody Testing in Cerebrospinal Fluid. Ann Neurol 2024. [PMID: 38591875 DOI: 10.1002/ana.26931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 03/09/2024] [Accepted: 03/15/2024] [Indexed: 04/10/2024]
Abstract
OBJECTIVE The aim of this study was to assess the diagnostic utility of cerebrospinal fluid (CSF) myelin oligodendrocyte glycoprotein antibodies (MOG-IgG) testing. METHODS We retrospectively identified patients for CSF MOG-IgG testing from January 1, 1996, to May 1, 2023, at Mayo Clinic and other medical centers that sent CSF MOG-IgG for testing including: controls, 282; serum MOG-IgG positive MOG antibody-associated disease (MOGAD), 74; serum MOG-IgG negative high-risk phenotypes, 73; serum false positive MOG-IgG with alternative diagnoses, 18. A live cell-based assay assessed CSF MOG-IgG positivity (IgG-binding-index [IBI], ≥2.5) using multiple anti-human secondary antibodies and end-titers were calculated if sufficient sample volume. Correlation of CSF MOG-IgG IBI and titer was assessed. RESULTS The pan-IgG Fc-specific secondary was optimal, yielding CSF MOG-IgG sensitivity of 90% and specificity of 98% (Youden's index 0.88). CSF MOG-IgG was positive in: 4/282 (1.4%) controls; 66/74 (89%) serum MOG-IgG positive MOGAD patients; and 9/73 (12%) serum MOG-IgG negative patients with high-risk phenotypes. Serum negative but CSF positive MOG-IgG accounted for 9/83 (11%) MOGAD patients, and all fulfilled 2023 MOGAD diagnostic criteria. Subgroup analysis of serum MOG-IgG low-positives revealed CSF MOG-IgG positivity more in MOGAD (13/16[81%]) than other diseases with false positive serum MOG-IgG (3/15[20%]) (p = 0.01). CSF MOG-IgG IBI and CSF MOG-IgG titer (both available in 29 samples) were correlated (Spearman's r = 0.64, p < 0.001). INTERPRETATION CSF MOG-IgG testing has diagnostic utility in patients with a suspicious phenotype but negative serum MOG-IgG, and those with low positive serum MOG-IgG results and diagnostic uncertainty. These findings support a role for CSF MOG-IgG testing in the appropriate clinical setting. ANN NEUROL 2024.
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Affiliation(s)
- Vyanka Redenbaugh
- Department of Neurology and Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - James P Fryer
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Laura Cacciaguerra
- Department of Neurology and Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - John J Chen
- Department of Neurology and Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
- Ophthalmology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Tammy M Greenwood
- Ophthalmology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Michael Gilligan
- Department of Neurology and Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
- Department of Neurology, St Vincent's University Hospital, Dublin, Ireland
| | - Smathorn Thakolwiboon
- Department of Neurology and Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Masoud Majed
- Department of Neurology and Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Nicholas H Chia
- Department of Neurology and Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Andrew McKeon
- Department of Neurology and Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - John R Mills
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | | | - Jan-Mendelt Tillema
- Department of Neurology and Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Binxia Yang
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Yahya Abdulrahman
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Kai Guo
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Nisa Vorasoot
- Department of Neurology and Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
- Division of Neurology, Department of Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | | | - Deena A Tajfirouz
- Department of Neurology and Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
- Ophthalmology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Michel Toledano
- Department of Neurology and Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Anastasia Zekeridou
- Department of Neurology and Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Divyanshu Dubey
- Department of Neurology and Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Grace Y Gombolay
- Emory University, Children's Healthcare of Atlanta: Pediatrics Institute, Atlanta, Georgia, USA
| | - César Caparó-Zamalloa
- Basic Research Center in Dementia and Central Nervous System Demyelinating Diseases, Instituto Nacional de Ciencias Neurológicas, Lima, Peru
| | - Ilya Kister
- Department of Neurology, Comprehensive MS Center, NYU Grossman School of Medicine, New York, New York, USA
| | - Sean J Pittock
- Department of Neurology and Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Eoin P Flanagan
- Department of Neurology and Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
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2
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Redenbaugh V, Montalvo M, Sechi E, Buciuc M, Fryer JP, McKeon A, Lennon VA, Mills JR, Weinshenker BG, Wingerchuk DM, Chen JJ, Tariq Bhatti M, Lopez Chiriboga AS, Pittock SJ, Flanagan EP. Diagnostic value of aquaporin-4-IgG live cell based assay in neuromyelitis optica spectrum disorders. Mult Scler J Exp Transl Clin 2021; 7:20552173211052656. [PMID: 34868626 PMCID: PMC8637716 DOI: 10.1177/20552173211052656] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 09/23/2021] [Indexed: 12/03/2022] Open
Abstract
Objective Determine the utility of aquaporin 4 IgG (AQP4-IgG) testing (live cell-based
assay) for Neuromyelitis Optica Spectrum Disorders (NMOSD). Methods We included Mayo Clinic patients (1/1/2018-12/31/2019) tested for serum
AQP4-IgG by live cell-based flow-cytometric assay. Medical records were
reviewed to assess if patients fulfilled 2015 NMOSD criteria. Results Of 1371 patients tested, 41 were positive (3%) and all fulfilled NMOSD
criteria with AQP4-IgG (specificity = 100%). Only 10/1330 testing negative
met NMOSD criteria without AQP4-IgG (sensitivity = 80%) and seven of these
10 were MOG-IgG positive. Conclusions AQP4-IgG by live cell-based assay was highly specific and without false
positives in a high throughput setting.
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Affiliation(s)
- Vyanka Redenbaugh
- Departments of Neurology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Mayra Montalvo
- Departments of Neurology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Elia Sechi
- Departments of Neurology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Marina Buciuc
- Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - James P Fryer
- Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Andrew McKeon
- Departments of Neurology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Vanda A Lennon
- Departments of Neurology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - John R Mills
- Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Brian G Weinshenker
- Departments of Neurology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Dean M Wingerchuk
- Department of Neurology, Mayo Clinic College of Medicine, Scottsdale, AZ, USA
| | - John J Chen
- Departments of Neurology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - M Tariq Bhatti
- Departments of Neurology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | | | - Sean J Pittock
- Departments of Neurology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Eoin P Flanagan
- Departments of Neurology, Mayo Clinic College of Medicine, Rochester, MN, USA
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3
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Shelly S, Klein C, Dyck PJB, Paul P, Mauermann ML, Berini SE, Howe B, Fryer JP, Basal E, Bakri HM, Laughlin RS, McKeon A, Pittock SJ, Mills J, Dubey D. Neurofascin-155 Immunoglobulin Subtypes: Clinicopathologic Associations and Neurologic Outcomes. Neurology 2021; 97:e2392-e2403. [PMID: 34635556 PMCID: PMC8673722 DOI: 10.1212/wnl.0000000000012932] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 10/01/2021] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND AND OBJECTIVE Multiple studies highlighting diagnostic utility of neurofascin 155 (NF155)-IgG4 in chronic demyelinating inflammatory polyradiculoneuropathy (CIDP) have been published. However, few studies comprehensively address the long-term outcomes, or clinical utility of NF155-IgM or NF155-IgG, in the absence of NF155-IgG4. In this study we evaluate phenotypic and histopathological specificity, and differences in outcomes between these NF155 antibody isotypes or IgG subclasses. We also compare NF155-IgG4 seropositive cases to other seropositive demyelinating neuropathies. METHODS In this study, neuropathy patient sera seen at Mayo Clinic were tested for NF155-IgG4, NF155-IgG and NF155-IgM autoantibodies. Demographic and clinical data of all seropositive cases were reviewed. RESULTS We identified 32 NF155 patients (25 NF155-IgG positive [20 NF155-IgG4 positive], 7 NF155-IgM seropositive). NF155-IgG4 seropositive patients clinically presented with distal more than proximal muscle weakness, positive sensory symptoms (prickling, asymmetric paresthesia, neuropathic pain) and gait ataxia. Cranial nerve involvement (11/20, 55%) and papilledema (4/12, 33%) occurred in many. Electrodiagnostic testing (EDX) demonstrated demyelinating polyradiculoneuropathy (19/20, 95%). Autonomic involvement occurred in 45% (n=9, median CASS score 3.5, range 1-7). Nerve biopsies from the NF155-IgG4 patients (n=11) demonstrated grouped segmental demyelination (50%), myelin reduplication (45%) and paranodal swellings (50%). Most patients needed 2nd and 3rd line immunosuppression but had favorable long-term outcomes (n=18). Among 14 patients with serial EDX over 2 years, all except one demonstrated improvement after treatment. NF155-IgG positive NF155-IgG4 negative (NF155-IgG positive) and NF155-IgM positive patients were phenotypically different from NF155-IgG4 seropositive patients. Sensory ataxia, neuropathic pain, cerebellar dysfunction and root/plexus MRI abnormalities were significantly more common in NF155-IgG4 positive compared to MAG-IgM neuropathy. Chronic immune sensory polyradiculopathy (CISP)/CISP-plus phenotype was more common among Contactin-1 neuropathies compared to NF155-IgG4 positive cases. NF155-IgG4 positive cases responded favorably to immunotherapy compared to MAG-IgM seropositive cases with distal acquired demyelinating symmetric neuropathy (p<0.001) and had better long-term clinical outcomes compared to contactin-1 IgG (p=0.04). DISCUSSION We report long-term follow-up and clinical outcome of NF155-IgG4 patients. NF155-IgG4 but not IgM or IgG patients have unique clinical-electrodiagnostic signature. We demonstrate NF155-IgG4 positive patients, unlike classical CIDP with neuropathic pain and dysautonomia common at presentation. Long-term outcomes were favorable. CLASSIFICATION OF EVIDENCE This study provides Class III evidence that NF155-IgG4 seropositive patients, compared to typical CIDP patients, present with distal more than proximal muscle weakness, positive sensory symptoms, and gait ataxia.
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Affiliation(s)
- Shahar Shelly
- Department of Neurology Mayo Clinic Foundation, Rochester, Minnesota
| | - Christopher Klein
- Department of Neurology Mayo Clinic Foundation, Rochester, Minnesota.,Department of Laboratory Medicine and Pathology Mayo Clinic Foundation, Rochester, Minnesota
| | - P James B Dyck
- Department of Neurology Mayo Clinic Foundation, Rochester, Minnesota
| | - Pritikanta Paul
- Department of Neurology and Rehabilitation, University of Illinois at Chicago, Chicago
| | | | - Sarah E Berini
- Department of Neurology Mayo Clinic Foundation, Rochester, Minnesota
| | - Benjamin Howe
- Department of Neurology Mayo Clinic Foundation, Rochester, Minnesota.,Department of radiology. Mayo Clinic Foundation, Rochester, Minnesota
| | - James P Fryer
- Department of Laboratory Medicine and Pathology Mayo Clinic Foundation, Rochester, Minnesota
| | - Eati Basal
- Department of Laboratory Medicine and Pathology Mayo Clinic Foundation, Rochester, Minnesota
| | - Hammami M Bakri
- Department of Laboratory Medicine and Pathology Mayo Clinic Foundation, Rochester, Minnesota
| | - Ruple S Laughlin
- Department of Neurology Mayo Clinic Foundation, Rochester, Minnesota
| | - Andrew McKeon
- Department of Neurology Mayo Clinic Foundation, Rochester, Minnesota.,Department of Laboratory Medicine and Pathology Mayo Clinic Foundation, Rochester, Minnesota
| | - Sean J Pittock
- Department of Neurology Mayo Clinic Foundation, Rochester, Minnesota.,Department of Laboratory Medicine and Pathology Mayo Clinic Foundation, Rochester, Minnesota
| | - John Mills
- Department of Laboratory Medicine and Pathology Mayo Clinic Foundation, Rochester, Minnesota
| | - Divyanshu Dubey
- Department of Neurology Mayo Clinic Foundation, Rochester, Minnesota .,Department of Laboratory Medicine and Pathology Mayo Clinic Foundation, Rochester, Minnesota
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4
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Sechi E, Krecke KN, Messina SA, Buciuc M, Pittock SJ, Chen JJ, Weinshenker BG, Lopez-Chiriboga AS, Lucchinetti CF, Zalewski NL, Tillema JM, Kunchok A, Monaco S, Morris PP, Fryer JP, Nguyen A, Greenwood T, Syc-Mazurek SB, Keegan BM, Flanagan EP. Comparison of MRI Lesion Evolution in Different Central Nervous System Demyelinating Disorders. Neurology 2021; 97:e1097-e1109. [PMID: 34261784 PMCID: PMC8456356 DOI: 10.1212/wnl.0000000000012467] [Citation(s) in RCA: 71] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 06/11/2021] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND AND OBJECTIVE There are few studies that compare lesion evolution across different CNS demyelinating diseases, yet knowledge of this may be important for diagnosis and understanding differences in disease pathogenesis. We sought to compare MRI T2-lesion evolution in myelin-oligodendrocyte-glycoprotein-IgG-associated disorder (MOGAD), aquaporin-4-IgG-positive neuromyelitis optica spectrum disorder (AQP4-IgG-NMOSD), and multiple sclerosis (MS). METHODS In this descriptive study, we retrospectively identified Mayo Clinic patients with MOGAD, AQP4-IgG-NMOSD, or MS and: 1) brain or myelitis attack; 2) available attack MRI within 6 weeks; and 3) follow-up MRI beyond 6 months without interval relapses in that region. Two neurologists identified the symptomatic or largest T2-lesion for each patient (index lesion). MRIs were then independently reviewed by two neuroradiologists blinded to diagnosis to determine resolution of T2-lesions by consensus. The index T2-lesion area was manually outlined acutely and at follow-up to assess variation in size. RESULTS We included 156 patients (MOGAD, 38; AQP4-IgG-NMOSD, 51; MS, 67) with 172 attacks (brain, 81; myelitis, 91). The age (median [range]) differed between MOGAD (25 [2-74]), AQP4-IgG-NMOSD (53 [10-78]) and MS (37 [16-61]) (p<0.01) and female sex predominated in the AQP4-IgG-NMOSD (41/51 [80%]) and MS (51/67 [76%]) groups but not among those with MOGAD (17/38 [45%]). Complete resolution of the index T2-lesion was more frequent in MOGAD (brain, 13/18[72%]; spine, 22/28[79%]) than AQP4-IgG-NMOSD (brain, 3/21[14%]; spine, 0/34[0%]) and MS (brain, 7/42[17%]; spine, 0/29[0%]), p<0.001. Resolution of all T2-Lesions occurred most often in MOGAD (brain, 7/18[39%]; spine, 22/28[79%]) than AQP4-IgG-NMOSD (brain, 2/21[10%]; spine, 0/34[0%]), and MS (brain, 2/42[5%]; spine, 0/29[0%]), p< 0.01. There was a larger median (range) reduction in T2-lesion area in mm2 on follow-up axial brain MRI with MOGAD (213[55-873]) than AQP4-IgG-NMOSD (104[0.7-597]) (p=0.02) and MS, 36[0-506]) (p< 0.001) and the reductions in size on sagittal spine MRI follow-up in MOGAD (262[0-888]) and AQP4-IgG-NMOSD (309[0-1885]) were similar (p=0.4) and greater than MS (23[0-152]) (p<0.001). CONCLUSIONS The MRI T2-lesions in MOGAD resolve completely more often than AQP4-IgG-NMOSD and MS. This has implications for diagnosis, monitoring disease activity, and clinical trial design, while also providing insight into pathogenesis of central nervous system demyelinating diseases.
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Affiliation(s)
- Elia Sechi
- Department of Neurology, Mayo Clinic, Rochester, MN, USA.,Department of Neurosciences, Biomedicine, and Movement Sciences, University of Verona, Verona, Italy
| | - Karl N Krecke
- Department of Radiology, Mayo Clinic, Rochester, MN, USA
| | | | - Marina Buciuc
- Department of Neurology, Mayo Clinic, Rochester, MN, USA
| | - Sean J Pittock
- Department of Neurology, Mayo Clinic, Rochester, MN, USA.,Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - John J Chen
- Department of Neurology, Mayo Clinic, Rochester, MN, USA.,Department of Ophthalmology, Mayo Clinic, Rochester, MN, USA
| | | | | | | | | | | | - Amy Kunchok
- Department of Neurology, Mayo Clinic, Rochester, MN, USA
| | - Salvatore Monaco
- Department of Neurosciences, Biomedicine, and Movement Sciences, University of Verona, Verona, Italy
| | | | - James P Fryer
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Adam Nguyen
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Tammy Greenwood
- Department of Ophthalmology, Mayo Clinic, Rochester, MN, USA
| | | | - B Mark Keegan
- Department of Neurology, Mayo Clinic, Rochester, MN, USA
| | - Eoin P Flanagan
- Department of Neurology, Mayo Clinic, Rochester, MN, USA; .,Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
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5
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Sechi E, Buciuc M, Pittock SJ, Chen JJ, Fryer JP, Jenkins SM, Budhram A, Weinshenker BG, Lopez-Chiriboga AS, Tillema JM, McKeon A, Mills JR, Tobin WO, Flanagan EP. Positive Predictive Value of Myelin Oligodendrocyte Glycoprotein Autoantibody Testing. JAMA Neurol 2021; 78:741-746. [PMID: 33900394 PMCID: PMC8077043 DOI: 10.1001/jamaneurol.2021.0912] [Citation(s) in RCA: 116] [Impact Index Per Article: 38.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Question What is the positive predictive value of myelin oligodendrocyte glycoprotein (MOG)–IgG1 testing in a clinical setting? Findings Of 1260 consecutive patients tested for MOG-IgG1 at the Mayo Clinic over 2 years, 92 (7.3%) were positive, 26 (28%) of whom had their results independently designated as false positive by 2 neurologists. The positive predictive value was 72% and varied with autoantibody titer (≥1:1000, 100%; 1:100, 82%; 1:20-40, 51%) and clinical–magnetic resonance imaging phenotypes at testing (pretest probability: high, 85%; low, 12%). Meaning False-positive MOG-IgG1 results are encountered in clinical practice; caution is advised before assigning a MOG-IgG1–associated disorder diagnosis in patients with low-titer positive results and atypical phenotypes. Importance Myelin oligodendrocyte glycoprotein-IgG1–associated disorder (MOGAD) is a distinct central nervous system–demyelinating disease. Positive results on MOG-IgG1 testing by live cell-based assays can confirm a MOGAD diagnosis, but false-positive results may occur. Objective To determine the positive predictive value (PPV) of MOG-IgG1 testing in a tertiary referral center. Design, Setting, and Participants This diagnostic study was conducted over 2 years, from January 1, 2018, through December 31, 2019. Patients in the Mayo Clinic who were consecutively tested for MOG-IgG1 by live cell-based flow cytometry during their diagnostic workup were included. Patients without research authorization were excluded. Main Outcomes and Measures Medical records of patients who were tested were initially reviewed by 2 investigators blinded to MOG-IgG1 serostatus, and pretest probability was classified as high or low (suggestive of MOGAD or not). Testing of MOG-IgG1 used a live-cell fluorescence-activated cell-sorting assay; an IgG binding index value of 2.5 or more with an end titer of 1:20 or more was considered positive. Cases positive for MOG-IgG1 were independently designated by 2 neurologists as true-positive or false-positive results at last follow-up, based on current international recommendations on diagnosis or identification of alternative diagnoses; consensus was reached for cases in which disagreement existed. Results A total of 1617 patients were tested, and 357 were excluded. Among 1260 included patients tested over 2 years, the median (range) age at testing was 46 (0-98) years, and 792 patients were female (62.9%). A total of 92 of 1260 (7.3%) were positive for MOG-IgG1. Twenty-six results (28%) were designated as false positive by the 2 raters, with an overall agreement on 91 of 92 cases (99%) for true and false positivity. Alternative diagnoses included multiple sclerosis (n = 11), infarction (n = 3), B12 deficiency (n = 2), neoplasia (n = 2), genetically confirmed adrenomyeloneuropathy (n = 1), and other conditions (n = 7). The overall PPV (number of true-positive results/total positive results) was 72% (95% CI, 62%-80%) and titer dependent (PPVs: 1:1000, 100%; 1:100, 82%; 1:20-40, 51%). The median titer was higher with true-positive results (1:100 [range, 1:20-1:10000]) than false-positive results (1:40 [range, 1:20-1:100]; P < .001). The PPV was higher for children (94% [95% CI, 72%-99%]) vs adults (67% [95% CI, 56%-77%]) and patients with high pretest probability (85% [95% CI, 76%-92%]) vs low pretest probability (12% [95% CI, 3%-34%]). The specificity of MOG-IgG1 testing was 97.8%. Conclusions and Relevance This study confirms MOG-IgG1 as a highly specific biomarker for MOGAD, but when using a cutoff of 1:20, it has a low PPV of 72%. Caution is advised in the interpretation of low titers among patients with atypical phenotypes, because ordering MOG-IgG1 in low pretest probability situations will increase the proportion of false-positive results.
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Affiliation(s)
- Elia Sechi
- Department of Neurology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota.,Department of Medical, Surgical and Experimental Sciences, University of Sassari, Sassari, Italy
| | - Marina Buciuc
- Department of Neurology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota
| | - Sean J Pittock
- Department of Neurology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota.,Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota
| | - John J Chen
- Department of Neurology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota.,Department of Ophthalmology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota
| | - James P Fryer
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota
| | - Sarah M Jenkins
- Department of Health Sciences Research, Mayo Clinic College of Medicine and Science, Rochester, Minnesota
| | - Adrian Budhram
- Department of Neurology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota.,Department of Clinical Neurological Sciences, London Health Sciences Centre, Western University, London, Ontario, Canada
| | - Brian G Weinshenker
- Department of Neurology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota
| | | | - Jan-Mendelt Tillema
- Department of Neurology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota
| | - Andrew McKeon
- Department of Neurology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota.,Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota
| | - John R Mills
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota
| | - W Oliver Tobin
- Department of Neurology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota
| | - Eoin P Flanagan
- Department of Neurology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota.,Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota
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6
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Banks SA, Morris PP, Chen JJ, Pittock SJ, Sechi E, Kunchok A, Tillema JM, Fryer JP, Weinshenker BG, Krecke KN, Lopez-Chiriboga AS, Nguyen A, Greenwood TM, Lucchinetti CF, Zalewski NL, Messina SA, Flanagan EP. Brainstem and cerebellar involvement in MOG-IgG-associated disorder versus aquaporin-4-IgG and MS. J Neurol Neurosurg Psychiatry 2020; 92:jnnp-2020-325121. [PMID: 33372052 PMCID: PMC8592388 DOI: 10.1136/jnnp-2020-325121] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 11/19/2020] [Accepted: 12/01/2020] [Indexed: 12/12/2022]
Abstract
OBJECTIVE To determine the frequency and characteristics of brainstem or cerebellar involvement in myelin-oligodendrocyte-glycoprotein-antibody-associated-disorder (MOGAD) versus aquaporin-4-IgG-seropositive-neuromyelitis optica spectrum disorder (AQP4-IgG-NMOSD) and multiple sclerosis (MS). METHODS In this observational study, we retrospectively identified 185 Mayo Clinic MOGAD patients with: (1) characteristic MOGAD phenotype, (2) MOG-IgG seropositivity by live cell-based assay and (3) MRI lesion(s) of brainstem, cerebellum or both. We compared the symptomatic attacks to AQP4-IgG-NMOSD (n=30) and MS (n=30). RESULTS Brainstem or cerebellar involvement occurred in 62/185 (34%) MOGAD patients of which 39/62 (63%) were symptomatic. Ataxia (45%) and diplopia (26%) were common manifestations. The median age in years (range) in MOGAD of 24 (2-65) was younger than MS at 36 (16-65; p=0.046) and AQP4-IgG-NMOSD at 45 (6-72; p=0.006). Isolated attacks involving the brainstem, cerebellum or both were less frequent in MOGAD (9/39 (23%)) than MS (22/30 (73%); p<0.001) but not significantly different from AQP4-IgG-NMOSD (14/30 (47%); p=0.07). Diffuse middle cerebellar peduncle MRI-lesions favoured MOGAD (17/37 (46%)) over MS (3/30 (10%); p=0.001) and AQP4-IgG-NMOSD (3/30 (10%); p=0.001). Diffuse medulla, pons or midbrain MRI lesions occasionally occurred in MOGAD and AQP4-IgG-NMOSD but never in MS. Cerebrospinal fluid (CSF) oligoclonal bands were rare in MOGAD (5/30 (17%)) and AQP4-IgG-NMOSD (2/22 (9%); p=0.68) but common in MS (18/22 (82%); p<0.001). Disability at nadir or recovery did not differ between the groups. CONCLUSION Involvement of the brainstem, cerebellum or both is common in MOGAD but usually occurs as a component of a multifocal central nervous system attack rather than in isolation. We identified clinical, CSF and MRI attributes that can help discriminate MOGAD from AQP4-IgG-NMOSD and MS.
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Affiliation(s)
| | - Padraig P Morris
- Radiology (Division of Neuroradiology), Mayo Clinic, Rochester, Minnesota, USA
| | - John J Chen
- Neurology, Mayo Clinic, Rochester, Minnesota, USA
- Ophthalmology, Mayo Clinic Rochester, Rochester, Minnesota, USA
| | - Sean J Pittock
- Neurology, Mayo Clinic, Rochester, Minnesota, USA
- Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | - Elia Sechi
- Neurology, Mayo Clinic, Rochester, Minnesota, USA
- Department of Clinical and Experimental Medicine, Sassari University Hospital, Sassari, Sardegna, Italy
| | - Amy Kunchok
- Neurology, Mayo Clinic, Rochester, Minnesota, USA
- Neurology, Cleveland Clinic, Cleveland, Ohio, USA
| | | | - James P Fryer
- Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Karl N Krecke
- Radiology (Division of Neuroradiology), Mayo Clinic, Rochester, Minnesota, USA
| | | | - Adam Nguyen
- Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | - Tammy M Greenwood
- Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | | | | | - Steven A Messina
- Radiology (Division of Neuroradiology), Mayo Clinic, Rochester, Minnesota, USA
| | - Eoin P Flanagan
- Neurology, Mayo Clinic, Rochester, Minnesota, USA
- Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
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Chen JJ, Flanagan EP, Bhatti MT, Jitprapaikulsan J, Dubey D, Lopez Chiriboga ASS, Fryer JP, Weinshenker BG, McKeon A, Tillema JM, Lennon VA, Lucchinetti CF, Kunchok A, McClelland CM, Lee MS, Bennett JL, Pelak VS, Van Stavern G, Adesina OOO, Eggenberger ER, Acierno MD, Wingerchuk DM, Lam BL, Moss H, Beres S, Gilbert AL, Shah V, Armstrong G, Heidary G, Cestari DM, Stiebel-Kalish H, Pittock SJ. Steroid-sparing maintenance immunotherapy for MOG-IgG associated disorder. Neurology 2020; 95:e111-e120. [PMID: 32554760 PMCID: PMC7455322 DOI: 10.1212/wnl.0000000000009758] [Citation(s) in RCA: 121] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 01/21/2020] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVE Myelin oligodendrocyte glycoprotein-immunoglobulin G (MOG-IgG) associated disorder (MOGAD) often manifests with recurrent CNS demyelinating attacks. The optimal treatment for reducing relapses is unknown. To help determine the efficacy of long-term immunotherapy in preventing relapse in patients with MOGAD, we conducted a multicenter retrospective study to determine the rate of relapses on various treatments. METHODS We determined the frequency of relapses in patients receiving various forms of long-term immunotherapy for MOGAD. Inclusion criteria were history of ≥1 CNS demyelinating attacks, MOG-IgG seropositivity, and immunotherapy for ≥6 months. Patients were reviewed for CNS demyelinating attacks before and during long-term immunotherapy. RESULTS Seventy patients were included. The median age at initial CNS demyelinating attack was 29 years (range 3-61 years; 33% <18 years), and 59% were female. The median annualized relapse rate (ARR) before treatment was 1.6. On maintenance immunotherapy, the proportion of patients with relapse was as follows: mycophenolate mofetil 74% (14 of 19; ARR 0.67), rituximab 61% (22 of 36; ARR 0.59), azathioprine 59% (13 of 22; ARR 0.2), and IV immunoglobulin (IVIG) 20% (2 of 10; ARR 0). The overall median ARR on these 4 treatments was 0.3. All 9 patients treated with multiple sclerosis (MS) disease-modifying agents had a breakthrough relapse on treatment (ARR 1.5). CONCLUSION This large retrospective multicenter study of patients with MOGAD suggests that maintenance immunotherapy reduces recurrent CNS demyelinating attacks, with the lowest ARR being associated with maintenance IVIG therapy. Traditional MS disease-modifying agents appear to be ineffective. Prospective randomized controlled studies are required to validate these conclusions.
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Affiliation(s)
- John J Chen
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel.
| | - Eoin P Flanagan
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - M Tariq Bhatti
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Jiraporn Jitprapaikulsan
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Divyanshu Dubey
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Alfonso Sebastian S Lopez Chiriboga
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - James P Fryer
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Brian G Weinshenker
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Andrew McKeon
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Jan-Mendelt Tillema
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Vanda A Lennon
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Claudia F Lucchinetti
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Amy Kunchok
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Collin M McClelland
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Michael S Lee
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Jeffrey L Bennett
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Victoria S Pelak
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Gregory Van Stavern
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Ore-Ofe O Adesina
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Eric R Eggenberger
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Marie D Acierno
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Dean M Wingerchuk
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Byron L Lam
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Heather Moss
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Shannon Beres
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Aubrey L Gilbert
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Veeral Shah
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Grayson Armstrong
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Gena Heidary
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Dean M Cestari
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Hadas Stiebel-Kalish
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Sean J Pittock
- From the Departments of Ophthalmology (J.J.C., M.T.B.), Neurology (J.J.C., E.P.F., M.T.B., J.J., D.D., A.S.L.C., B.G.W., A.M., J.-M.T., V.A.L., C.F.L., A.K., S.J.P.), Laboratory Medicine and Pathology (E.P.F., J.J., D.D, J.P.F., A.M., V.A.L., S.J.P.), and Immunology (V.A.L.) and Center for MS and Autoimmune Neurology (E.P.F., D.D., B.G.W., A.M., V.A.L., C.F.L., A.K., S.J.P.), Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences (C.M.M., M.S.L.), University of Minnesota, Minneapolis; Departments of Neurology and Ophthalmology (J.L.B., V.S.P.), University of Colorado Denver School of Medicine, Aurora; Departments of Ophthalmology and Visual Sciences and Neurology (G.V.S.), Washington University, St. Louis School of Medicine, MO; Departments of Ophthalmology and Visual Science and Neurology (O.-O.O.A.), McGovern Medical School, Houston, TX; Departments of Neurology, Neurosurgery, and Neuro-Ophthalmology (E.R.E.), Mayo Clinic, Jacksonville, FL; Departments of Ophthalmology (M.D.A.) and Neurology (D.M.W.), Mayo Clinic, Scottsdale, AZ; Bascom Palmer Eye Institute (B.L.L.), University of Miami, FL; Department of Neurology and Ophthalmology (H.M., S.B.), Stanford University, Palo Alto, CA; Neuro-Ophthalmology (A.L.G.), Kaiser Permanente, Northern California, Vallejo; Department of Ophthalmology (V.S.), Baylor College of Medicine/Texas Children's Hospital, Houston; Department of Ophthalmology (G.A., D.M.C.), Massachusetts Eye and Ear Infirmary/Harvard Medical School, Boston; Department of Ophthalmology (G.H.), Boston Children's Hospital, Harvard Medical School, MA; and Neuro-Ophthalmology Unit (H.S.-K.), Department of Ophthalmology, Rabin Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
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Jitprapaikulsan J, Fryer JP, Majed M, Smith CY, Jenkins SM, Cabre P, Hinson SR, Weinshenker BG, Mandrekar J, Chen JJ, Lucchinetti CF, Jiao Y, Segan J, Schmeling JE, Mills J, Flanagan EP, McKeon A, Pittock SJ. Clinical utility of AQP4-IgG titers and measures of complement-mediated cell killing in NMOSD. Neurol Neuroimmunol Neuroinflamm 2020; 7:7/4/e727. [PMID: 35413004 PMCID: PMC7286655 DOI: 10.1212/nxi.0000000000000727] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 03/15/2020] [Indexed: 11/15/2022]
Abstract
ObjectiveTo investigate whether aquaporin-4–immunoglobulin G (AQP4-IgG) titers and measures of complement-mediated cell killing are clinically useful to predict the occurrence of relapse, relapse severity, and/or disability in neuromyelitis optica spectrum disorder (NMOSD).MethodsWe studied 336 serial serum specimens from 82 AQP4-lgG–seropositive patients. NMOSD activity at blood draw was defined as preattack (24 [7.1%], drawn within 30 days preceding an attack), attack (108 [32.1%], drawn on attack onset or within 30 days after), or remission (199 [59.2%], drawn >90 days after attack onset and >30 days preceding a relapse). For each specimen, we documented the attack type and severity and immunotherapy status. Complement-mediated cell killing was quantitated by flow cytometry using an M23-AQP4 cell-based assay.ResultsThe estimated logarithmic means of AQP4-IgG titers in preattack, attack, and remission samples were 3.302, 3.657, and 3.458, respectively, p = 0.21. Analyses of 81 attack/remission pairs in 42 patients showed no significant titer differences (3.736 vs 3.472, p = 0.15). Analyses of 13 preattack/attack pairs in 9 patients showed no significant titer differences (3.994 vs 3.889, p = 0.67). Of 5 patients who converted to seronegative status, 2 continued to have attacks. Titers for major and minor attacks (n = 70) were not significantly different (3.905 vs 3.676, p = 0.47). Similarly, measures (titers) of complement-mediated cell killing were not significantly associated with disease course, attack severity, or disability at 5 years.Conclusions and relevanceAQP4-IgG titer and complement-mediated cell killing lack significant prognostic or predictive utility in NMOSD. Although titers may drop in the setting of immunotherapy, seroconversion to negative status does not preclude ongoing clinical attacks.Classification of evidenceThis study provides Class II evidence that in patients with NMOSD, AQP4-IgG titers and measures of complement-mediated cell killing activity do not predict relapses, relapse severity, or disability.
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Affiliation(s)
- Jiraporn Jitprapaikulsan
- From the Departments of Neurology (J.J., M.M., B.G.W., C.F.L., Y.J., E.P.F., A.M., S.J.P.), Laboratory Medicine and Pathology (J.J., J.P.F., S.R.H., J.E.S., J. Mills, A.M., S.J.P.), Health Sciences Research (C.Y.S., S.M.J., J. Mandrekar), Mayo Clinic, Rochester, MN; Department of Neurology (P.C.), Fort-de-France University Hospital Center, Pierre Zobda Quitman Hospital, Martinique; Center for MS and Autoimmune Neurology (B.G.W., J.J.C., C.F.L., J. S., J. Mills, E.P.F., A.M., S.J.P.), and Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN
| | - James P Fryer
- From the Departments of Neurology (J.J., M.M., B.G.W., C.F.L., Y.J., E.P.F., A.M., S.J.P.), Laboratory Medicine and Pathology (J.J., J.P.F., S.R.H., J.E.S., J. Mills, A.M., S.J.P.), Health Sciences Research (C.Y.S., S.M.J., J. Mandrekar), Mayo Clinic, Rochester, MN; Department of Neurology (P.C.), Fort-de-France University Hospital Center, Pierre Zobda Quitman Hospital, Martinique; Center for MS and Autoimmune Neurology (B.G.W., J.J.C., C.F.L., J. S., J. Mills, E.P.F., A.M., S.J.P.), and Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN
| | - Masoud Majed
- From the Departments of Neurology (J.J., M.M., B.G.W., C.F.L., Y.J., E.P.F., A.M., S.J.P.), Laboratory Medicine and Pathology (J.J., J.P.F., S.R.H., J.E.S., J. Mills, A.M., S.J.P.), Health Sciences Research (C.Y.S., S.M.J., J. Mandrekar), Mayo Clinic, Rochester, MN; Department of Neurology (P.C.), Fort-de-France University Hospital Center, Pierre Zobda Quitman Hospital, Martinique; Center for MS and Autoimmune Neurology (B.G.W., J.J.C., C.F.L., J. S., J. Mills, E.P.F., A.M., S.J.P.), and Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN
| | - Carin Y Smith
- From the Departments of Neurology (J.J., M.M., B.G.W., C.F.L., Y.J., E.P.F., A.M., S.J.P.), Laboratory Medicine and Pathology (J.J., J.P.F., S.R.H., J.E.S., J. Mills, A.M., S.J.P.), Health Sciences Research (C.Y.S., S.M.J., J. Mandrekar), Mayo Clinic, Rochester, MN; Department of Neurology (P.C.), Fort-de-France University Hospital Center, Pierre Zobda Quitman Hospital, Martinique; Center for MS and Autoimmune Neurology (B.G.W., J.J.C., C.F.L., J. S., J. Mills, E.P.F., A.M., S.J.P.), and Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN
| | - Sarah M Jenkins
- From the Departments of Neurology (J.J., M.M., B.G.W., C.F.L., Y.J., E.P.F., A.M., S.J.P.), Laboratory Medicine and Pathology (J.J., J.P.F., S.R.H., J.E.S., J. Mills, A.M., S.J.P.), Health Sciences Research (C.Y.S., S.M.J., J. Mandrekar), Mayo Clinic, Rochester, MN; Department of Neurology (P.C.), Fort-de-France University Hospital Center, Pierre Zobda Quitman Hospital, Martinique; Center for MS and Autoimmune Neurology (B.G.W., J.J.C., C.F.L., J. S., J. Mills, E.P.F., A.M., S.J.P.), and Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN
| | - Philippe Cabre
- From the Departments of Neurology (J.J., M.M., B.G.W., C.F.L., Y.J., E.P.F., A.M., S.J.P.), Laboratory Medicine and Pathology (J.J., J.P.F., S.R.H., J.E.S., J. Mills, A.M., S.J.P.), Health Sciences Research (C.Y.S., S.M.J., J. Mandrekar), Mayo Clinic, Rochester, MN; Department of Neurology (P.C.), Fort-de-France University Hospital Center, Pierre Zobda Quitman Hospital, Martinique; Center for MS and Autoimmune Neurology (B.G.W., J.J.C., C.F.L., J. S., J. Mills, E.P.F., A.M., S.J.P.), and Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN
| | - Shannon R Hinson
- From the Departments of Neurology (J.J., M.M., B.G.W., C.F.L., Y.J., E.P.F., A.M., S.J.P.), Laboratory Medicine and Pathology (J.J., J.P.F., S.R.H., J.E.S., J. Mills, A.M., S.J.P.), Health Sciences Research (C.Y.S., S.M.J., J. Mandrekar), Mayo Clinic, Rochester, MN; Department of Neurology (P.C.), Fort-de-France University Hospital Center, Pierre Zobda Quitman Hospital, Martinique; Center for MS and Autoimmune Neurology (B.G.W., J.J.C., C.F.L., J. S., J. Mills, E.P.F., A.M., S.J.P.), and Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN
| | - Brian G Weinshenker
- From the Departments of Neurology (J.J., M.M., B.G.W., C.F.L., Y.J., E.P.F., A.M., S.J.P.), Laboratory Medicine and Pathology (J.J., J.P.F., S.R.H., J.E.S., J. Mills, A.M., S.J.P.), Health Sciences Research (C.Y.S., S.M.J., J. Mandrekar), Mayo Clinic, Rochester, MN; Department of Neurology (P.C.), Fort-de-France University Hospital Center, Pierre Zobda Quitman Hospital, Martinique; Center for MS and Autoimmune Neurology (B.G.W., J.J.C., C.F.L., J. S., J. Mills, E.P.F., A.M., S.J.P.), and Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN
| | - Jay Mandrekar
- From the Departments of Neurology (J.J., M.M., B.G.W., C.F.L., Y.J., E.P.F., A.M., S.J.P.), Laboratory Medicine and Pathology (J.J., J.P.F., S.R.H., J.E.S., J. Mills, A.M., S.J.P.), Health Sciences Research (C.Y.S., S.M.J., J. Mandrekar), Mayo Clinic, Rochester, MN; Department of Neurology (P.C.), Fort-de-France University Hospital Center, Pierre Zobda Quitman Hospital, Martinique; Center for MS and Autoimmune Neurology (B.G.W., J.J.C., C.F.L., J. S., J. Mills, E.P.F., A.M., S.J.P.), and Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN
| | - John J Chen
- From the Departments of Neurology (J.J., M.M., B.G.W., C.F.L., Y.J., E.P.F., A.M., S.J.P.), Laboratory Medicine and Pathology (J.J., J.P.F., S.R.H., J.E.S., J. Mills, A.M., S.J.P.), Health Sciences Research (C.Y.S., S.M.J., J. Mandrekar), Mayo Clinic, Rochester, MN; Department of Neurology (P.C.), Fort-de-France University Hospital Center, Pierre Zobda Quitman Hospital, Martinique; Center for MS and Autoimmune Neurology (B.G.W., J.J.C., C.F.L., J. S., J. Mills, E.P.F., A.M., S.J.P.), and Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN
| | - Claudia F Lucchinetti
- From the Departments of Neurology (J.J., M.M., B.G.W., C.F.L., Y.J., E.P.F., A.M., S.J.P.), Laboratory Medicine and Pathology (J.J., J.P.F., S.R.H., J.E.S., J. Mills, A.M., S.J.P.), Health Sciences Research (C.Y.S., S.M.J., J. Mandrekar), Mayo Clinic, Rochester, MN; Department of Neurology (P.C.), Fort-de-France University Hospital Center, Pierre Zobda Quitman Hospital, Martinique; Center for MS and Autoimmune Neurology (B.G.W., J.J.C., C.F.L., J. S., J. Mills, E.P.F., A.M., S.J.P.), and Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN
| | - Yujuan Jiao
- From the Departments of Neurology (J.J., M.M., B.G.W., C.F.L., Y.J., E.P.F., A.M., S.J.P.), Laboratory Medicine and Pathology (J.J., J.P.F., S.R.H., J.E.S., J. Mills, A.M., S.J.P.), Health Sciences Research (C.Y.S., S.M.J., J. Mandrekar), Mayo Clinic, Rochester, MN; Department of Neurology (P.C.), Fort-de-France University Hospital Center, Pierre Zobda Quitman Hospital, Martinique; Center for MS and Autoimmune Neurology (B.G.W., J.J.C., C.F.L., J. S., J. Mills, E.P.F., A.M., S.J.P.), and Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN
| | - Jessica Segan
- From the Departments of Neurology (J.J., M.M., B.G.W., C.F.L., Y.J., E.P.F., A.M., S.J.P.), Laboratory Medicine and Pathology (J.J., J.P.F., S.R.H., J.E.S., J. Mills, A.M., S.J.P.), Health Sciences Research (C.Y.S., S.M.J., J. Mandrekar), Mayo Clinic, Rochester, MN; Department of Neurology (P.C.), Fort-de-France University Hospital Center, Pierre Zobda Quitman Hospital, Martinique; Center for MS and Autoimmune Neurology (B.G.W., J.J.C., C.F.L., J. S., J. Mills, E.P.F., A.M., S.J.P.), and Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN
| | - John E Schmeling
- From the Departments of Neurology (J.J., M.M., B.G.W., C.F.L., Y.J., E.P.F., A.M., S.J.P.), Laboratory Medicine and Pathology (J.J., J.P.F., S.R.H., J.E.S., J. Mills, A.M., S.J.P.), Health Sciences Research (C.Y.S., S.M.J., J. Mandrekar), Mayo Clinic, Rochester, MN; Department of Neurology (P.C.), Fort-de-France University Hospital Center, Pierre Zobda Quitman Hospital, Martinique; Center for MS and Autoimmune Neurology (B.G.W., J.J.C., C.F.L., J. S., J. Mills, E.P.F., A.M., S.J.P.), and Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN
| | - John Mills
- From the Departments of Neurology (J.J., M.M., B.G.W., C.F.L., Y.J., E.P.F., A.M., S.J.P.), Laboratory Medicine and Pathology (J.J., J.P.F., S.R.H., J.E.S., J. Mills, A.M., S.J.P.), Health Sciences Research (C.Y.S., S.M.J., J. Mandrekar), Mayo Clinic, Rochester, MN; Department of Neurology (P.C.), Fort-de-France University Hospital Center, Pierre Zobda Quitman Hospital, Martinique; Center for MS and Autoimmune Neurology (B.G.W., J.J.C., C.F.L., J. S., J. Mills, E.P.F., A.M., S.J.P.), and Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN
| | - Eoin P Flanagan
- From the Departments of Neurology (J.J., M.M., B.G.W., C.F.L., Y.J., E.P.F., A.M., S.J.P.), Laboratory Medicine and Pathology (J.J., J.P.F., S.R.H., J.E.S., J. Mills, A.M., S.J.P.), Health Sciences Research (C.Y.S., S.M.J., J. Mandrekar), Mayo Clinic, Rochester, MN; Department of Neurology (P.C.), Fort-de-France University Hospital Center, Pierre Zobda Quitman Hospital, Martinique; Center for MS and Autoimmune Neurology (B.G.W., J.J.C., C.F.L., J. S., J. Mills, E.P.F., A.M., S.J.P.), and Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN
| | - Andrew McKeon
- From the Departments of Neurology (J.J., M.M., B.G.W., C.F.L., Y.J., E.P.F., A.M., S.J.P.), Laboratory Medicine and Pathology (J.J., J.P.F., S.R.H., J.E.S., J. Mills, A.M., S.J.P.), Health Sciences Research (C.Y.S., S.M.J., J. Mandrekar), Mayo Clinic, Rochester, MN; Department of Neurology (P.C.), Fort-de-France University Hospital Center, Pierre Zobda Quitman Hospital, Martinique; Center for MS and Autoimmune Neurology (B.G.W., J.J.C., C.F.L., J. S., J. Mills, E.P.F., A.M., S.J.P.), and Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN
| | - Sean J Pittock
- From the Departments of Neurology (J.J., M.M., B.G.W., C.F.L., Y.J., E.P.F., A.M., S.J.P.), Laboratory Medicine and Pathology (J.J., J.P.F., S.R.H., J.E.S., J. Mills, A.M., S.J.P.), Health Sciences Research (C.Y.S., S.M.J., J. Mandrekar), Mayo Clinic, Rochester, MN; Department of Neurology (P.C.), Fort-de-France University Hospital Center, Pierre Zobda Quitman Hospital, Martinique; Center for MS and Autoimmune Neurology (B.G.W., J.J.C., C.F.L., J. S., J. Mills, E.P.F., A.M., S.J.P.), and Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN.
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Reindl M, Schanda K, Woodhall M, Tea F, Ramanathan S, Sagen J, Fryer JP, Mills J, Teegen B, Mindorf S, Ritter N, Krummrei U, Stöcker W, Eggert J, Flanagan EP, Ramberger M, Hegen H, Rostasy K, Berger T, Leite MI, Palace J, Irani SR, Dale RC, Probst C, Probst M, Brilot F, Pittock SJ, Waters P. International multicenter examination of MOG antibody assays. Neurol Neuroimmunol Neuroinflamm 2020; 7:e674. [PMID: 32024795 PMCID: PMC7051197 DOI: 10.1212/nxi.0000000000000674] [Citation(s) in RCA: 152] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 12/18/2019] [Indexed: 01/13/2023]
Abstract
OBJECTIVE To compare the reproducibility of 11 antibody assays for immunoglobulin (Ig) G and IgM myelin oligodendrocyte glycoprotein antibodies (MOG-IgG and MOG-IgM) from 5 international centers. METHODS The following samples were analyzed: MOG-IgG clearly positive sera (n = 39), MOG-IgG low positive sera (n = 39), borderline negative sera (n = 13), clearly negative sera (n = 40), and healthy blood donors (n = 30). As technical controls, 18 replicates (9 MOG-IgG positive and 9 negative) were included. All samples and controls were recoded, aliquoted, and distributed to the 5 testing centers, which performed the following antibody assays: 5 live and 1 fixed immunofluorescence cell-based assays (CBA-IF, 5 MOG-IgG, and 1 MOG-IgM), 3 live flow cytometry cell-based assays (CBA-FACS, all MOG-IgG), and 2 ELISAs (both MOG-IgG). RESULTS We found excellent agreement (96%) between the live CBAs for MOG-IgG for samples previously identified as clearly positive or negative from 4 different national testing centers. The agreement was lower with fixed CBA-IF (90%), and the ELISA showed no concordance with CBAs for detection of human MOG-IgG. All CBAs showed excellent interassay reproducibility. The agreement of MOG-IgG CBAs for borderline negative (77%) and particularly low positive (33%) samples was less good. Finally, most samples from healthy blood donors (97%) were negative for MOG-IgG in all CBAs. CONCLUSIONS Live MOG-IgG CBAs showed excellent agreement for high positive and negative samples at 3 international testing centers. Low positive samples were more frequently discordant than in a similar comparison of aquaporin-4 antibody assays. Further research is needed to improve international standardization for clinical care.
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Affiliation(s)
- Markus Reindl
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria.
| | - Kathrin Schanda
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria
| | - Mark Woodhall
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria
| | - Fiona Tea
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria
| | - Sudarshini Ramanathan
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria
| | - Jessica Sagen
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria
| | - James P Fryer
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria
| | - John Mills
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria
| | - Bianca Teegen
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria
| | - Swantje Mindorf
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria
| | - Nora Ritter
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria
| | - Ulrike Krummrei
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria
| | - Winfried Stöcker
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria
| | - Juliane Eggert
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria
| | - Eoin P Flanagan
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria
| | - Melanie Ramberger
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria
| | - Harald Hegen
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria
| | - Kevin Rostasy
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria
| | - Thomas Berger
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria
| | - Maria Isabel Leite
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria
| | - Jacqueline Palace
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria
| | - Sarosh R Irani
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria
| | - Russell C Dale
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria
| | - Christian Probst
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria
| | - Monika Probst
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria
| | - Fabienne Brilot
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria.
| | - Sean J Pittock
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria.
| | - Patrick Waters
- From the Clinical Department of Neurology (M. Reindl, K.S., M. Ramberger, H.H.), Medical University of Innsbruck, Innsbruck, Austria; Oxford Autoimmune Neurology Group (M.W., M. Ramberger, M.I.L., J.P., S.R.I., P.W.), Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom; Brain Autoimmunity Group (F.T., S.R., R.C.D., F.B.), Kids Neuroscience Centre at Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre, University of Sydney, New South Wales, Australia; Department of Neurology (J.S., J.P.F., J.M., E.P.F., S.J.P.), Mayo Clinic, Rochester, MN; Euroimmun Medizinische Labordiagnostika AG (B.T., S.M., N.R., U.K., W.S., C.P.), Lübeck, Germany; Institute for Quality Assurance (ifQ) affiliated to Euroimmun (J.E., M.P.), Lübeck, Germany; Paediatric Neurology (K.R.), Witten/Herdecke University, Children's Hospital Datteln, Datteln, Germany; and Department of Neurology (T.B.), Medical University of Vienna, Austria.
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10
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Dubey D, Pittock SJ, Krecke KN, Morris PP, Sechi E, Zalewski NL, Weinshenker BG, Shosha E, Lucchinetti CF, Fryer JP, Lopez-Chiriboga AS, Chen JC, Jitprapaikulsan J, McKeon A, Gadoth A, Keegan BM, Tillema JM, Naddaf E, Patterson MC, Messacar K, Tyler KL, Flanagan EP. Clinical, Radiologic, and Prognostic Features of Myelitis Associated With Myelin Oligodendrocyte Glycoprotein Autoantibody. JAMA Neurol 2020; 76:301-309. [PMID: 30575890 DOI: 10.1001/jamaneurol.2018.4053] [Citation(s) in RCA: 210] [Impact Index Per Article: 52.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Importance Recognizing the characteristics of myelin oligodendrocyte glycoprotein autoantibody (MOG-IgG) myelitis is essential for early accurate diagnosis and treatment. Objective To evaluate the clinical, radiologic, and prognostic features of MOG-IgG myelitis and compare with myelitis with aquaporin-4-IgG (AQP4-IgG) and multiple sclerosis (MS). Design, Setting, and Participants We retrospectively identified 199 MOG-IgG-positive Mayo Clinic patients from January 1, 2000, through December 31, 2017, through our neuroimmunology laboratory. Fifty-four patients met inclusion criteria of (1) clinical myelitis; (2) MOG-IgG positivity; and (3) medical records available. We excluded 145 patients without documented myelitis. Myelitis of AQP4-IgG (n = 46) and MS (n = 26) were used for comparison. Main Outcomes and Measures Outcome variables included modified Rankin score and need for gait aid. A neuroradiologist analyzed spine magnetic resonance imaging of patients with MOG-IgG and control patients blinded to diagnosis. Results Of 54 included patients with MOG-IgG myelitis, the median age was 25 years (range, 3-73 years) and 24 were women (44%). Isolated transverse myelitis was the initial manifestation in 29 patients (54%), and 10 (19%) were initially diagnosed as having viral/postviral acute flaccid myelitis. Cerebrospinal fluid-elevated oligoclonal bands occurred in 1 of 38 (3%). At final follow-up (median, 24 months; range, 2-120 months), 32 patients (59%) had developed 1 or more relapses of optic neuritis (n = 31); transverse myelitis (n = 7); or acute disseminated encephalomyelitis (n = 1). Clinical features favoring MOG-IgG myelitis vs AQP4-IgG or MS myelitis included prodromal symptoms and concurrent acute disseminated encephalomyelitis. Magnetic resonance imaging features favoring MOG-IgG over AQP4-IgG or MS myelitis were T2-signal abnormality confined to gray matter (sagittal line and axial H sign) and lack of enhancement. Longitudinally extensive T2 lesions were of similar frequency in MOG-IgG and AQP4-IgG myelitis (37 of 47 [79%] vs 28 of 34 [82%]; P = .52) but not found in MS. Multiple spinal cord lesions and conus involvement were more frequent with MOG-IgG than AQP4-IgG but not different from MS. Wheelchair dependence at myelitis nadir occurred in one-third of patients with MOG-IgG and AQP4-IgG but never with MS, although patients with MOG-IgG myelitis recovered better than those with AQP4-IgG. Conclusions and Relevance Myelitis is an early manifestation of MOG-IgG-related disease and may have a clinical phenotype of acute flaccid myelitis. We identified a variety of clinical and magnetic resonance imaging features that may help clinicians identify those at risk in whom MOG-IgG should be tested.
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Affiliation(s)
- Divyanshu Dubey
- Department of Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota.,Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Sean J Pittock
- Department of Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota.,Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Karl N Krecke
- Department of Radiology (Division of Neuroradiology), Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Padraig P Morris
- Department of Radiology (Division of Neuroradiology), Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Elia Sechi
- Department of Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Nicholas L Zalewski
- Department of Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Brian G Weinshenker
- Department of Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Eslam Shosha
- Department of Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | | | - James P Fryer
- Department of Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - A Sebastian Lopez-Chiriboga
- Department of Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota.,Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - John C Chen
- Department of Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota.,Department of Ophthalmology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Jiraporn Jitprapaikulsan
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Andrew McKeon
- Department of Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota.,Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Avi Gadoth
- Department of Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - B Mark Keegan
- Department of Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Jan-Mendelt Tillema
- Department of Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Elie Naddaf
- Department of Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Marc C Patterson
- Department of Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Kevin Messacar
- Department of Pediatrics, University of Colorado School of Medicine, Aurora
| | - Kenneth L Tyler
- Department of Neurology, University of Colorado School of Medicine, Aurora
| | - Eoin P Flanagan
- Department of Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota.,Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, Minnesota
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11
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Senanayake B, Jitprapaikulsan J, Aravinthan M, Wijesekera JC, Ranawaka UK, Riffsy MT, Paramanathan T, Sagen J, Fryer JP, Schmeling J, Majed M, Flanagan EP, Pittock SJ. Seroprevalence and clinical phenotype of MOG-IgG-associated disorders in Sri Lanka. J Neurol Neurosurg Psychiatry 2019; 90:1381-1383. [PMID: 31387865 PMCID: PMC6902071 DOI: 10.1136/jnnp-2018-320243] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 03/27/2019] [Accepted: 05/12/2019] [Indexed: 12/02/2022]
Affiliation(s)
| | - Jiraporn Jitprapaikulsan
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA.,Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA
| | | | | | - Udaya K Ranawaka
- Department of Medicine, Faculty of Medicine, University of Kelaniya, Ragama, Sri Lanka
| | | | | | - Jessica Sagen
- Center for MS and Autoimmune Neurology, Mayo Clinic, Rochester, Minnesota, USA
| | - James P Fryer
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | - John Schmeling
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | - Masoud Majed
- Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA
| | - Eoin P Flanagan
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA.,Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA.,Center for MS and Autoimmune Neurology, Mayo Clinic, Rochester, Minnesota, USA
| | - Sean J Pittock
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA .,Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA.,Center for MS and Autoimmune Neurology, Mayo Clinic, Rochester, Minnesota, USA
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12
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Jitprapaikulsan J, Lopez Chiriboga AS, Flanagan EP, Fryer JP, McKeon A, Weinshenker BG, Pittock SJ. Novel Glial Targets and Recurrent Longitudinally Extensive Transverse Myelitis. JAMA Neurol 2019; 75:892-895. [PMID: 29710213 DOI: 10.1001/jamaneurol.2018.0805] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Jiraporn Jitprapaikulsan
- Department of Neurology, Mayo Clinic, Rochester, Minnesota.,Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | | | - Eoin P Flanagan
- Department of Neurology, Mayo Clinic, Rochester, Minnesota.,Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic, Rochester, Minnesota
| | - James P Fryer
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - Andrew McKeon
- Department of Neurology, Mayo Clinic, Rochester, Minnesota.,Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota.,Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic, Rochester, Minnesota
| | - Brian G Weinshenker
- Department of Neurology, Mayo Clinic, Rochester, Minnesota.,Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic, Rochester, Minnesota
| | - Sean J Pittock
- Department of Neurology, Mayo Clinic, Rochester, Minnesota.,Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota.,Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic, Rochester, Minnesota
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13
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Burt RK, Balabanov R, Han X, Burns C, Gastala J, Jovanovic B, Helenowski I, Jitprapaikulsan J, Fryer JP, Pittock SJ. Autologous nonmyeloablative hematopoietic stem cell transplantation for neuromyelitis optica. Neurology 2019; 93:e1732-e1741. [PMID: 31578302 DOI: 10.1212/wnl.0000000000008394] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 06/17/2019] [Indexed: 01/14/2023] Open
Abstract
OBJECTIVE To determine if autologous nonmyeloablative hematopoietic stem cell transplantation (HSCT) could be a salvage therapy for neuromyelitis optica spectrum disorder (NMOSD). METHODS Thirteen patients were enrolled in a prospective open-label cohort study (11 NMOSD aquaporin-4-immunoglobulin G [AQP4-IgG]-positive, 1 NMOSD without AQP4, and 1 NMOSD AQP4-IgG-positive with neuropsychiatric systemic lupus erythematosus [SLE]). Following stem cell mobilization with cyclophosphamide (2 g/m2) and filgrastim, patients were treated with cyclophosphamide (200 mg/kg) divided as 50 mg/kg IV on day -5 to day -2, rATG (thymoglobulin) given IV at 0.5 mg/kg on day -5, 1 mg/kg on day -4, and 1.5 mg/kg on days -3, -2, and -1 (total dose 6 mg/kg), and rituximab 500 mg IV on days -6 and +1. Unselected peripheral blood stem cells were infused on day 0. AQP4-IgG antibody status was determined by Clinical Laboratory Improvement Amendments-validated ELISA or flow cytometry assays. Cell-killing activity was measured using a flow cytometry-based complement assay. RESULTS Median follow-up was 57 months. The patient with coexistent SLE died of complications of active lupus 10 months after HSCT. For the 12 patients with NMOSD without other active coexisting autoimmune diseases, 11 patients are more than 5 years post-transplant, and 80% are relapse-free off all immunosuppression (p < 0.001). At 1 and 5 years after HSCT, Expanded Disability Status Scale score improved from a baseline mean of 4.4 to 3.3 (p < 0.01) at 5 years. The Neurologic Rating Scale score improved after HSCT from a baseline mean of 69.5 to 85.7 at 5 years (p < 0.01). The Short Form-36 health survey for quality of life total score improved from mean 34.2 to 62.1 (p = 0.001) at 5 years. In the 11 patients whose baseline AQP4-IgG serostatus was positive, 9 patients became seronegative by the immunofluorescence or cell-binding assays available at the time; complement activating and cell-killing ability of patient serum was switched off in 6 of 7 patients with before and after HSCT testing. Two patients remained AQP4-IgG-seropositive (with persistent complement activating and cell-killing ability) and relapsed within 2 years of HSCT. No patient with seronegative conversion relapsed. CONCLUSION Prolonged drug-free remission with AQP4-IgG seroconversion to negative following nonmyeloablative autologous HSCT warrants further investigation.
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Affiliation(s)
- Richard K Burt
- From the Division of Immunotherapy, Department of Medicine (R.K.B., X.H., C.B.), and Departments of Neurology (R.B.), Radiology (J.G.), and Preventive Medicine (B.J., I.H.), Northwestern University Feinberg School of Medicine, Chicago, IL; and the Departments of Neurology (J.J., S.J.P.) and Laboratory Medicine and Pathology (J.J., J.P.F., S.J.P.) and Center for Multiple Sclerosis and Autoimmune Neurology (S.J.P.), Mayo Clinic College of Medicine, Rochester, MN.
| | - Roumen Balabanov
- From the Division of Immunotherapy, Department of Medicine (R.K.B., X.H., C.B.), and Departments of Neurology (R.B.), Radiology (J.G.), and Preventive Medicine (B.J., I.H.), Northwestern University Feinberg School of Medicine, Chicago, IL; and the Departments of Neurology (J.J., S.J.P.) and Laboratory Medicine and Pathology (J.J., J.P.F., S.J.P.) and Center for Multiple Sclerosis and Autoimmune Neurology (S.J.P.), Mayo Clinic College of Medicine, Rochester, MN
| | - Xiaoqiang Han
- From the Division of Immunotherapy, Department of Medicine (R.K.B., X.H., C.B.), and Departments of Neurology (R.B.), Radiology (J.G.), and Preventive Medicine (B.J., I.H.), Northwestern University Feinberg School of Medicine, Chicago, IL; and the Departments of Neurology (J.J., S.J.P.) and Laboratory Medicine and Pathology (J.J., J.P.F., S.J.P.) and Center for Multiple Sclerosis and Autoimmune Neurology (S.J.P.), Mayo Clinic College of Medicine, Rochester, MN
| | - Carol Burns
- From the Division of Immunotherapy, Department of Medicine (R.K.B., X.H., C.B.), and Departments of Neurology (R.B.), Radiology (J.G.), and Preventive Medicine (B.J., I.H.), Northwestern University Feinberg School of Medicine, Chicago, IL; and the Departments of Neurology (J.J., S.J.P.) and Laboratory Medicine and Pathology (J.J., J.P.F., S.J.P.) and Center for Multiple Sclerosis and Autoimmune Neurology (S.J.P.), Mayo Clinic College of Medicine, Rochester, MN
| | - Joseph Gastala
- From the Division of Immunotherapy, Department of Medicine (R.K.B., X.H., C.B.), and Departments of Neurology (R.B.), Radiology (J.G.), and Preventive Medicine (B.J., I.H.), Northwestern University Feinberg School of Medicine, Chicago, IL; and the Departments of Neurology (J.J., S.J.P.) and Laboratory Medicine and Pathology (J.J., J.P.F., S.J.P.) and Center for Multiple Sclerosis and Autoimmune Neurology (S.J.P.), Mayo Clinic College of Medicine, Rochester, MN
| | - Borko Jovanovic
- From the Division of Immunotherapy, Department of Medicine (R.K.B., X.H., C.B.), and Departments of Neurology (R.B.), Radiology (J.G.), and Preventive Medicine (B.J., I.H.), Northwestern University Feinberg School of Medicine, Chicago, IL; and the Departments of Neurology (J.J., S.J.P.) and Laboratory Medicine and Pathology (J.J., J.P.F., S.J.P.) and Center for Multiple Sclerosis and Autoimmune Neurology (S.J.P.), Mayo Clinic College of Medicine, Rochester, MN
| | - Irene Helenowski
- From the Division of Immunotherapy, Department of Medicine (R.K.B., X.H., C.B.), and Departments of Neurology (R.B.), Radiology (J.G.), and Preventive Medicine (B.J., I.H.), Northwestern University Feinberg School of Medicine, Chicago, IL; and the Departments of Neurology (J.J., S.J.P.) and Laboratory Medicine and Pathology (J.J., J.P.F., S.J.P.) and Center for Multiple Sclerosis and Autoimmune Neurology (S.J.P.), Mayo Clinic College of Medicine, Rochester, MN
| | - Jiraporn Jitprapaikulsan
- From the Division of Immunotherapy, Department of Medicine (R.K.B., X.H., C.B.), and Departments of Neurology (R.B.), Radiology (J.G.), and Preventive Medicine (B.J., I.H.), Northwestern University Feinberg School of Medicine, Chicago, IL; and the Departments of Neurology (J.J., S.J.P.) and Laboratory Medicine and Pathology (J.J., J.P.F., S.J.P.) and Center for Multiple Sclerosis and Autoimmune Neurology (S.J.P.), Mayo Clinic College of Medicine, Rochester, MN
| | - James P Fryer
- From the Division of Immunotherapy, Department of Medicine (R.K.B., X.H., C.B.), and Departments of Neurology (R.B.), Radiology (J.G.), and Preventive Medicine (B.J., I.H.), Northwestern University Feinberg School of Medicine, Chicago, IL; and the Departments of Neurology (J.J., S.J.P.) and Laboratory Medicine and Pathology (J.J., J.P.F., S.J.P.) and Center for Multiple Sclerosis and Autoimmune Neurology (S.J.P.), Mayo Clinic College of Medicine, Rochester, MN
| | - Sean J Pittock
- From the Division of Immunotherapy, Department of Medicine (R.K.B., X.H., C.B.), and Departments of Neurology (R.B.), Radiology (J.G.), and Preventive Medicine (B.J., I.H.), Northwestern University Feinberg School of Medicine, Chicago, IL; and the Departments of Neurology (J.J., S.J.P.) and Laboratory Medicine and Pathology (J.J., J.P.F., S.J.P.) and Center for Multiple Sclerosis and Autoimmune Neurology (S.J.P.), Mayo Clinic College of Medicine, Rochester, MN
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Chen JJ, Tobin WO, Majed M, Jitprapaikulsan J, Fryer JP, Leavitt JA, Flanagan EP, McKeon A, Pittock SJ. Prevalence of Myelin Oligodendrocyte Glycoprotein and Aquaporin-4-IgG in Patients in the Optic Neuritis Treatment Trial. JAMA Ophthalmol 2019; 136:419-422. [PMID: 29470571 DOI: 10.1001/jamaophthalmol.2017.6757] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Importance Autoantibodies to aquaporin-4 (AQP4) and myelin oligodendrocyte glycoprotein (MOG) are recently established biomarkers of autoimmune optic neuritis whose frequency and accompanying phenotype, especially for MOG-IgG, are still being characterized. The Optic Neuritis Treatment Trial (ONTT) was a well-known randomized clinical trial in optic neuritis; therefore, knowledge of the serostatus and accompanying phenotype of these patients would be useful to determine the frequency of these antibodies in patients presenting with typical monocular optic neuritis and their outcomes. Objectives To determine the AQP4-IgG and MOG-IgG serostatus of patients within the ONTT and describe the clinical features of seropositive patients. Design, Setting, and Participants In this follow-up study of the randomized clinical trial, ONTT, conducted between July 1, 1988, and June 30, 1991, analysis of serum for AQP4-IgG and MOG-IgG was performed from January 1 to April 30, 2017. A total of 177 patients from the ONTT with acute optic neuritis and serum available for analysis were enrolled from 13 academic referral centers. Interventions Analysis of serum for AQP4-IgG and MOG-IgG was performed at Mayo Clinic Neuroimmunology Laboratory in 2017 with a flow cytometry, live cell, AQP4- and MOG-transfected cell-based assay. Main Outcomes and Measures Aquaporin-4-IgG and MOG-IgG serostatus. Results Of the 177 patients in the study (135 women and 42 men; mean [SD] age, 32.8 [6.9] years), 3 were positive for MOG-IgG (1.7%) and none were positive for AQP4-IgG. All 3 patients positive for MOG-IgG had disc edema at presentation. Two patients later had a single episode of recurrent optic neuritis. All 3 patients had complete recovery of visual acuity, and none were corticosteroid dependent, although peripheral visual field loss persisted in 1 patient. None of the 3 patients positive for MOG-IgG had demyelinating lesions on magnetic resonance imaging scans, and none had developed multiple sclerosis at the 15-year follow-up. Conclusions and Relevance Frequency of MOG-IgG was rare in the ONTT, and AQP4-IgG was not found in patients in the ONTT. Characteristics of patients positive for MOG-IgG in the ONTT support the previously described phenotype of MOG-IgG optic neuritis. Myelin oligodendrocyte glycoprotein-related disease appears to be a different entity than multiple sclerosis. Overall, AQP4-IgG and MOG-IgG may be less common in isolated optic neuritis than previously reported.
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Affiliation(s)
- John J Chen
- Department of Ophthalmology, Mayo Clinic, Rochester, Minnesota.,Department of Neurology, Mayo Clinic, Rochester, Minnesota
| | - W Oliver Tobin
- Department of Neurology, Mayo Clinic, Rochester, Minnesota
| | - Masoud Majed
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | | | - James P Fryer
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | | | | | - Andrew McKeon
- Department of Neurology, Mayo Clinic, Rochester, Minnesota.,Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - Sean J Pittock
- Department of Neurology, Mayo Clinic, Rochester, Minnesota.,Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
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15
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Chen JJ, Flanagan EP, Jitprapaikulsan J, López-Chiriboga A(SS, Fryer JP, Leavitt JA, Weinshenker BG, McKeon A, Tillema JM, Lennon VA, Tobin WO, Keegan BM, Lucchinetti CF, Kantarci OH, McClelland CM, Lee MS, Bennett JL, Pelak VS, Chen Y, VanStavern G, Adesina OOO, Eggenberger ER, Acierno MD, Wingerchuk DM, Brazis PW, Sagen J, Pittock SJ. Myelin Oligodendrocyte Glycoprotein Antibody-Positive Optic Neuritis: Clinical Characteristics, Radiologic Clues, and Outcome. Am J Ophthalmol 2018; 195:8-15. [PMID: 30055153 DOI: 10.1016/j.ajo.2018.07.020] [Citation(s) in RCA: 225] [Impact Index Per Article: 37.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 06/25/2018] [Accepted: 07/18/2018] [Indexed: 12/22/2022]
Abstract
PURPOSE To characterize the clinical phenotype of myelin oligodendrocyte glycoprotein antibody (MOG-IgG) optic neuritis. DESIGN Observational case series. METHODS Setting: Multicenter. Patient/Study Population: Subjects meeting inclusion criteria: (1) history of optic neuritis; (2) seropositivity (MOG-IgG binding index > 2.5); 87 MOG-IgG-seropositive patients with optic neuritis were included (Mayo Clinic, 76; other medical centers, 11). MOG-IgG was detected using full-length MOG-transfected live HEK293 cells in a clinically validated flow cytometry assay. MAIN OUTCOME MEASURES Clinical and radiologic characteristics and visual outcomes. RESULTS Fifty-seven percent were female and median age at onset was 31 (range 2-79) years. Median number of optic neuritis attacks was 3 (range 1-8), median follow-up 2.9 years (range 0.5-24 years), and annualized relapse rate 0.8. Average visual acuity (VA) at nadir of worst attack was count fingers. Average final VA was 20/30; for 5 patients (6%) it was ≤20/200 in either eye. Optic disc edema and pain each occurred in 86% of patients. Magnetic resonance imaging showed perineural enhancement in 50% and longitudinally extensive involvement in 80%. Twenty-six patients (30%) had recurrent optic neuritis without other neurologic symptoms, 10 (12%) had single optic neuritis, 14 (16%) had chronic relapsing inflammatory optic neuropathy, and 36 (41%) had optic neuritis with other neurologic symptoms (most neuromyelitis optica spectrum disorder-like phenotype or acute disseminated encephalomyelitis). Only 1 patient was diagnosed with MS (MOG-IgG-binding index 2.8; normal range ≤ 2.5). Persistent MOG-IgG seropositivity occurred in 61 of 62 (98%). A total of 61% received long-term immunosuppressant therapy. CONCLUSIONS Manifestations of MOG-IgG-positive optic neuritis are diverse. Despite recurrent attacks with severe vision loss, the majority of patients have significant recovery and retain functional vision long-term.
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Guerra H, Pittock SJ, Moder KG, Fryer JP, Gadoth A, Flanagan EP. Frequency of Aquaporin-4 Immunoglobulin G in Longitudinally Extensive Transverse Myelitis With Antiphospholipid Antibodies. Mayo Clin Proc 2018; 93:1299-1304. [PMID: 29655487 DOI: 10.1016/j.mayocp.2018.02.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 01/29/2018] [Accepted: 02/01/2018] [Indexed: 11/20/2022]
Abstract
Antiphospholipid (aPL) antibodies have historically been postulated to cause a poorly understood inflammatory myelitis. Neuromyelitis optica spectrum disorder (NMOSD) causes an inflammatory longitudinally extensive transverse myelitis (LETM). In 2004, aquaporin-4 immunoglobulin G (AQP4-IgG) was first reported as a highly specific (>99%) serum diagnostic biomarker of NMOSD, distinguishing it from other disorders (eg, multiple sclerosis). We sought to assess the frequency of AQP4-IgG (and thus NMOSD diagnosis) in LETM with aPL antibodies. We searched Mayo Clinic records (from January 1, 1996, through December 31, 2014) for patients with (1) LETM and (2) aPL or β2-glycoprotein I antibodies and (3) a serum sample available. AQP4-IgG was evaluated in the 24 included patients and in 20 controls with aPL antibodies but without myelitis. Seropositivity for AQP4-IgG was confirmed in 11 of 24 patients with LETM (46%), confirming an AQP4-IgG-seropositive NMOSD diagnosis rather than aPL-associated LETM. Six of 11 AQP4-IgG-seropositive patients (54%) were initially diagnosed as having aPL/lupus-associated myelitis. Recurrent LETM was exclusive to AQP4-IgG-seropositive patients (P=.003). Alternative diagnoses assigned to the remaining 13 AQP4-IgG-seronegative patients included idiopathic transverse myelitis (n=5), seronegative NMOSD (n=2), spinal cord infarct attributed to aPL antibodies (n=2), spinal cord sarcoidosis (n=1), varicella-zoster virus myelitis (n=1), postinfectious myelitis (n=1), and multiple sclerosis (n=1). All 20 controls were seronegative for AQP4-IgG. Clotting disorders occurred in 36% of patients (4 of 11) with LETM with both aPL antibodies and AQP4-IgG. AQP4-IgG should be tested in all patients with LETM and aPL antibodies because AQP4-IgG-seropositive NMOSD accounts for almost half of all cases. Clotting disorders are common in patients with LETM with dual positivity for AQP4-IgG and aPL antibodies.
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Affiliation(s)
- Hilda Guerra
- Department of Neurology, Mayo Clinic, Rochester, MN
| | - Sean J Pittock
- Department of Neurology, Mayo Clinic, Rochester, MN; Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - Kevin G Moder
- Department of Rheumatology, Mayo Clinic, Rochester, MN
| | - James P Fryer
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - Avi Gadoth
- Department of Neurology, Mayo Clinic, Rochester, MN
| | - Eoin P Flanagan
- Department of Neurology, Mayo Clinic, Rochester, MN; Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN.
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Honorat JA, Lopez-Chiriboga AS, Kryzer TJ, Fryer JP, Devine M, Flores A, Lennon VA, Pittock SJ, McKeon A. Autoimmune septin-5 cerebellar ataxia. Neurol Neuroimmunol Neuroinflamm 2018; 5:e474. [PMID: 29998156 PMCID: PMC6039209 DOI: 10.1212/nxi.0000000000000474] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 05/21/2018] [Indexed: 01/08/2023]
Abstract
Objective To report a form of autoimmune cerebellar ataxia in which antibodies target septin-5, a guanosine triphosphate (GTP)-binding neural protein involved in neurotransmitter exocytosis. Methods Archived sera and CSF specimens with unclassified synaptic antibodies were re-evaluated by tissue-based indirect immunofluorescence assay. Autoantigens were identified by Western blot and mass spectrometry. Recombinant protein assays (Western blot, cell based, and protein screening array) confirmed antigen specificity. Results Serum and CSF from 6 patients produced identical synaptic immunoglobulin G (IgG) staining patterns of synaptic regions (neuropil) of the mouse cerebrum and cerebellum. The molecular layer of the cerebellum and the thalamus demonstrated stronger immunoreactivity than the midbrain, hippocampus, cortex, and basal ganglia. The antigen revealed by mass spectrometry analysis of immunoprecipitated cerebellar proteins and confirmed by recombinant protein assays was septin-5. All 4 patients with records available had subacute onset of cerebellar ataxia with prominent eye movement symptoms (oscillopsia or vertigo). None had cancer detected. Improvements occurred after immunotherapies (2) or spontaneously (1). One patient died. Conclusion Septin-5 IgG represents a biomarker for a potentially fatal but treatable autoimmune ataxia.
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Affiliation(s)
- Josephe A Honorat
- Department of Laboratory Medicine and Pathology (J.A.H., T.J.K., J.P.F., V.A.L., S.J.P., A.M.), the Department of Neurology (A.S.L.-C., V.A.L., S.J.P., A.M.), and the Department of Immunology (V.A.L.), College of Medicine, Mayo Clinic, Rochester, MN; and Department of Neurology (M.D., A.F.), University of Texas, Southwestern, Dallas
| | - A Sebastian Lopez-Chiriboga
- Department of Laboratory Medicine and Pathology (J.A.H., T.J.K., J.P.F., V.A.L., S.J.P., A.M.), the Department of Neurology (A.S.L.-C., V.A.L., S.J.P., A.M.), and the Department of Immunology (V.A.L.), College of Medicine, Mayo Clinic, Rochester, MN; and Department of Neurology (M.D., A.F.), University of Texas, Southwestern, Dallas
| | - Thomas J Kryzer
- Department of Laboratory Medicine and Pathology (J.A.H., T.J.K., J.P.F., V.A.L., S.J.P., A.M.), the Department of Neurology (A.S.L.-C., V.A.L., S.J.P., A.M.), and the Department of Immunology (V.A.L.), College of Medicine, Mayo Clinic, Rochester, MN; and Department of Neurology (M.D., A.F.), University of Texas, Southwestern, Dallas
| | - James P Fryer
- Department of Laboratory Medicine and Pathology (J.A.H., T.J.K., J.P.F., V.A.L., S.J.P., A.M.), the Department of Neurology (A.S.L.-C., V.A.L., S.J.P., A.M.), and the Department of Immunology (V.A.L.), College of Medicine, Mayo Clinic, Rochester, MN; and Department of Neurology (M.D., A.F.), University of Texas, Southwestern, Dallas
| | - Michelle Devine
- Department of Laboratory Medicine and Pathology (J.A.H., T.J.K., J.P.F., V.A.L., S.J.P., A.M.), the Department of Neurology (A.S.L.-C., V.A.L., S.J.P., A.M.), and the Department of Immunology (V.A.L.), College of Medicine, Mayo Clinic, Rochester, MN; and Department of Neurology (M.D., A.F.), University of Texas, Southwestern, Dallas
| | - Angela Flores
- Department of Laboratory Medicine and Pathology (J.A.H., T.J.K., J.P.F., V.A.L., S.J.P., A.M.), the Department of Neurology (A.S.L.-C., V.A.L., S.J.P., A.M.), and the Department of Immunology (V.A.L.), College of Medicine, Mayo Clinic, Rochester, MN; and Department of Neurology (M.D., A.F.), University of Texas, Southwestern, Dallas
| | - Vanda A Lennon
- Department of Laboratory Medicine and Pathology (J.A.H., T.J.K., J.P.F., V.A.L., S.J.P., A.M.), the Department of Neurology (A.S.L.-C., V.A.L., S.J.P., A.M.), and the Department of Immunology (V.A.L.), College of Medicine, Mayo Clinic, Rochester, MN; and Department of Neurology (M.D., A.F.), University of Texas, Southwestern, Dallas
| | - Sean J Pittock
- Department of Laboratory Medicine and Pathology (J.A.H., T.J.K., J.P.F., V.A.L., S.J.P., A.M.), the Department of Neurology (A.S.L.-C., V.A.L., S.J.P., A.M.), and the Department of Immunology (V.A.L.), College of Medicine, Mayo Clinic, Rochester, MN; and Department of Neurology (M.D., A.F.), University of Texas, Southwestern, Dallas
| | - Andrew McKeon
- Department of Laboratory Medicine and Pathology (J.A.H., T.J.K., J.P.F., V.A.L., S.J.P., A.M.), the Department of Neurology (A.S.L.-C., V.A.L., S.J.P., A.M.), and the Department of Immunology (V.A.L.), College of Medicine, Mayo Clinic, Rochester, MN; and Department of Neurology (M.D., A.F.), University of Texas, Southwestern, Dallas
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Majed M, Fryer JP, McKeon A, Lennon VA, Pittock SJ. Clinical utility of testing AQP4-IgG in CSF: Guidance for physicians. Neurol Neuroimmunol Neuroinflamm 2016; 3:e231. [PMID: 27144221 PMCID: PMC4841640 DOI: 10.1212/nxi.0000000000000231] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 03/15/2016] [Indexed: 11/15/2022]
Abstract
OBJECTIVE To define, using assays of optimized sensitivity and specificity, the most informative specimen type for aquaporin-4 immunoglobulin G (AQP4-IgG) detection. METHODS Results were reviewed from longitudinal service testing for AQP4-IgG among specimens submitted to the Mayo Clinic Neuroimmunology Laboratory from 101,065 individual patients. Paired samples of serum/CSF were tested from 616 patients, using M1-AQP4-transfected cell-based assays (both fixed AQP4-CBA Euroimmun kit [commercial CBA] and live in-house flow cytometry [FACS]). Sensitivities were compared for 58 time-matched paired specimens (drawn ≤30 days apart) from patients with neuromyelitis optica (NMO) or high-risk patients. RESULTS The frequency of CSF submission as sole initial specimen was 1 in 50 in 2007 and 1 in 5 in 2015. In no case among 616 paired specimens was CSF positive and serum negative. In 58 time-matched paired specimens, AQP4-IgG was detected by FACS or by commercial CBA more sensitively in serum than in CSF (respectively, p = 0.06 and p < 0.001). A serum titer >1:100 predicted CSF positivity (p < 0.001). The probability of CSF positivity was greater around attack time (p = 0.03). No control specimen from 128 neurologic patients was positive by either assay. CONCLUSIONS FACS and commercial CBA detection of AQP4-IgG is less sensitive in CSF than in serum. The data suggest that most AQP4-IgG is produced in peripheral lymphoid tissues and that a critical serum/CSF gradient is required for IgG to penetrate the CNS in pathogenic quantity. Serum is the optimal and most cost-effective specimen for AQP4-IgG testing. CLASSIFICATION OF EVIDENCE This study provides Class IV evidence that for patients with NMO or NMOSD, CSF is less sensitive than serum for detection of AQP4-IgG.
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Affiliation(s)
- Masoud Majed
- Departments of Laboratory Medicine and Pathology (M.M., J.P.F., A.M., V.A.L., S.J.P.), Neurology (A.M., V.A.L., S.J.P.), and Immunology (V.A.L.), Mayo Clinic, Rochester, MN
| | - James P Fryer
- Departments of Laboratory Medicine and Pathology (M.M., J.P.F., A.M., V.A.L., S.J.P.), Neurology (A.M., V.A.L., S.J.P.), and Immunology (V.A.L.), Mayo Clinic, Rochester, MN
| | - Andrew McKeon
- Departments of Laboratory Medicine and Pathology (M.M., J.P.F., A.M., V.A.L., S.J.P.), Neurology (A.M., V.A.L., S.J.P.), and Immunology (V.A.L.), Mayo Clinic, Rochester, MN
| | - Vanda A Lennon
- Departments of Laboratory Medicine and Pathology (M.M., J.P.F., A.M., V.A.L., S.J.P.), Neurology (A.M., V.A.L., S.J.P.), and Immunology (V.A.L.), Mayo Clinic, Rochester, MN
| | - Sean J Pittock
- Departments of Laboratory Medicine and Pathology (M.M., J.P.F., A.M., V.A.L., S.J.P.), Neurology (A.M., V.A.L., S.J.P.), and Immunology (V.A.L.), Mayo Clinic, Rochester, MN
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Flanagan EP, Cabre P, Weinshenker BG, Sauver JS, Jacobson DJ, Majed M, Lennon VA, Lucchinetti CF, McKeon A, Matiello M, Kale N, Wingerchuk DM, Mandrekar J, Sagen JA, Fryer JP, Robinson AB, Pittock SJ. Epidemiology of aquaporin-4 autoimmunity and neuromyelitis optica spectrum. Ann Neurol 2016; 79:775-783. [PMID: 26891082 DOI: 10.1002/ana.24617] [Citation(s) in RCA: 204] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 01/22/2016] [Accepted: 02/14/2016] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Neuromyelitis optica (NMO) and its spectrum disorders (NMOSD) are inflammatory demyelinating diseases (IDDs) with a specific biomarker, aquaporin-4-immunoglobulin G (AQP4-IgG). Prior NMO/NMOSD epidemiological studies have been limited by lack of AQP4-IgG seroprevalence assessment, absence of population-based USA studies, and under-representation of blacks. To overcome these limitations, we sought to compare NMO/NMOSD seroepidemiology across 2 ethnically divergent populations. METHODS We performed a population-based comparative study of the incidence (2003-2011) and prevalence (on December 31, 2011) of NMO/NMOSD and AQP4-IgG seroincidence and seroprevalence (sera collected in 80-84% of IDD cases) among patients with IDD diagnosis in Olmsted County, Minnesota (82% white [Caucasian]) and Martinique (90% black [Afro-Caribbean]). AQP4-IgG was measured by M1 isoform fluorescence-activated cell-sorting assays. RESULTS The age- and sex-adjusted incidence (7.3 vs 0.7/1,000,000 person-years [p < 0.01]) and prevalence (10 vs 3.9/100,000 [p = 0.01]) in Martinique exceeded that in Olmsted County. The AQP4-IgG age- and sex-adjusted seroincidence (6.5 vs 0.7/1,000,000 person-years [p < 0.01]) and seroprevalence (7.9 vs 3.3/100,000 [p = 0.04]) were also higher in Martinique than Olmsted County. The ethnicity-specific prevalence was similar in Martinique and Olmsted County: 11.5 and 13/100,000 in blacks, and 6.1 and 4.0/100,000 in whites, respectively. NMO/NMOSD represented a higher proportion of IDD cases in Martinique than Olmsted County (16% vs 1.4%; p < 0.01). The onset age (median = 35-37 years) and female:male distribution (5-9:1) were similar across both populations; 60% of prevalent cases were either blind in 1 eye, dependent on a gait aid, or both. INTERPRETATION This study reports the highest prevalence of NMO/NMOSD in any population (10/100,000 in Martinique), estimates it affects 16,000 to 17,000 in the USA (higher than previous predictions), and demonstrates it disproportionately affects blacks. Ann Neurol 2016;79:775-783.
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Affiliation(s)
| | - Philippe Cabre
- Department of Neurology, Fort-de-France University Hospital Center, Pierre Zobda Quitman Hospital, Fort-de-France, Martinique, France
| | | | | | | | - Masoud Majed
- Department of Neurology, Mayo Clinic, Rochester, MN
| | - Vanda A Lennon
- Department of Neurology, Mayo Clinic, Rochester, MN.,Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN.,Department of Immunology, Mayo Clinic, Rochester, MN
| | | | - Andrew McKeon
- Department of Neurology, Mayo Clinic, Rochester, MN.,Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - Marcelo Matiello
- Department of Neurology, Massachusetts General Hospital and Brigham and Women's Hospital, Boston, MA
| | - Nilifur Kale
- Bakirkoy Prof Mazhar Osman Training and Research Hospital, Istanbul, Turkey
| | | | - Jay Mandrekar
- Department of Biostatistics, Mayo Clinic, Rochester, MN
| | | | - James P Fryer
- Department of Biostatistics, Mayo Clinic, Rochester, MN.,Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | | | - Sean J Pittock
- Department of Neurology, Mayo Clinic, Rochester, MN.,Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
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20
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Apiwattanakul M, Milone M, Pittock SJ, Kryzer TJ, Fryer JP, O'toole O, Mckeon A, Lennon VA. Signal recognition particle immunoglobulin g detected incidentally associates with autoimmune myopathy. Muscle Nerve 2016; 53:925-32. [PMID: 26561982 PMCID: PMC5067628 DOI: 10.1002/mus.24970] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 10/16/2015] [Accepted: 11/09/2015] [Indexed: 12/03/2022]
Abstract
Introduction: Paraneoplastic autoantibody screening of 150,000 patient sera by tissue‐based immunofluorescence incidentally revealed 170 with unsuspected signal recognition particle (SRP) immunoglobulin G (IgG), which is a recognized biomarker of autoimmune myopathy. Of the 77 patients with available information, 54 had myopathy. We describe the clinical/laboratory associations. Methods: Distinctive cytoplasm‐binding IgG (mouse tissue substrate) prompted western blot, enzyme‐linked immunoassay, and immunoprecipitation analyses. Available histories were reviewed. Results: The immunostaining pattern resembled rough endoplasmic reticulum, and mimicked Purkinje‐cell cytoplasmic antibody type 1 IgG/anti‐Yo. Immunoblotting revealed ribonucleoprotein reactivity. Recombinant antigens confirmed the following: SRP54 IgG specificity alone (17); SRP72 IgG specificity alone (3); both (32); or neither (2). Coexisting neural autoantibodies were identified in 28% (low titer). Electromyography revealed myopathy with fibrillation potentials; 78% of biopsies had active necrotizing myopathy with minimal inflammation, and 17% had inflammatory myopathy. Immunotherapy responsiveness was typically slow and incomplete, and relapses were frequent on withdrawal. Histologically confirmed cancers (17%) were primarily breast and hematologic, with some others. Conclusions: Autoimmune necrotizing SRP myopathy, both idiopathic and paraneoplastic, is underdiagnosed in neurological practice. Serological screening aids early diagnosis. Cancer surveillance and appropriate immunosuppressant therapy may improve outcome. Muscle Nerve53: 925–932, 2016
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Affiliation(s)
- Metha Apiwattanakul
- Department of Laboratory Medicine and Pathology, Mayo Clinic, 200 First Street SW, Rochester, Minnesota, 55905, USA
| | | | - Sean J Pittock
- Department of Laboratory Medicine and Pathology, Mayo Clinic, 200 First Street SW, Rochester, Minnesota, 55905, USA.,Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA
| | - Thomas J Kryzer
- Department of Laboratory Medicine and Pathology, Mayo Clinic, 200 First Street SW, Rochester, Minnesota, 55905, USA
| | - James P Fryer
- Department of Laboratory Medicine and Pathology, Mayo Clinic, 200 First Street SW, Rochester, Minnesota, 55905, USA
| | - Orna O'toole
- Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA
| | - Andrew Mckeon
- Department of Laboratory Medicine and Pathology, Mayo Clinic, 200 First Street SW, Rochester, Minnesota, 55905, USA.,Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA
| | - Vanda A Lennon
- Department of Laboratory Medicine and Pathology, Mayo Clinic, 200 First Street SW, Rochester, Minnesota, 55905, USA.,Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA.,Department of Immunology, Mayo Clinic, Rochester, Minnesota, USA
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21
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Matulewicz RS, Fryer JP, Yang XJ, Goyal R, Hairston JC. Renal Transplantation in the Setting of Prior Urinary Diversion: A Case of Poorly Differentiated Adenocarcinoma in an Ileal Conduit. Urol Case Rep 2016; 3:53-5. [PMID: 26793500 PMCID: PMC4714278 DOI: 10.1016/j.eucr.2015.01.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Revised: 12/30/2014] [Accepted: 01/02/2015] [Indexed: 11/06/2022] Open
Abstract
Though rare, renal transplantation into a bowel containing urinary diversion is necessary in select clinical situations. Compared to renal transplant patients with functional native bladders, patients with urinary diversion have comparable long-term graft and patient survival rates. However, compounding the increased risk of malignancy in those on chronic immunosuppression are the inherent risks of urinary diversion. We present a case report of a high grade adenocarcinoma with neuroendocrine differentiation arising in an ileal conduit and discussion on the pathophysiology, management, and screening of this highly select population.
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Affiliation(s)
- R S Matulewicz
- Department of Urology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - J P Fryer
- Department of Surgery, Kovler Organ Transplantation Center, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - X J Yang
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - R Goyal
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - J C Hairston
- Department of Urology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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22
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Brickshawana A, Hinson SR, Romero MF, Lucchinetti CF, Guo Y, Buttmann M, McKeon A, Pittock SJ, Chang MH, Chen AP, Kryzer TJ, Fryer JP, Jenkins SM, Cabre P, Lennon VA. Investigation of the KIR4.1 potassium channel as a putative antigen in patients with multiple sclerosis: a comparative study. Lancet Neurol 2014; 13:795-806. [PMID: 25008548 DOI: 10.1016/s1474-4422(14)70141-3] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Antibodies have been implicated in the pathogenicity of multiple sclerosis by findings of immunoglobulins in patients' CSF and often IgG and complement in lesions, and by a 2012 report that nearly half of patients' serum samples contain IgG specific for a glial potassium-channel, KIR4.1. We aimed to establish the frequency of KIR4.1-binding IgG in serum and CSF of patients with multiple sclerosis, and whether KIR4.1 immunoreactivity is retained or lost in demyelinating lesions. METHODS Using ELISA with a KIR4.1 peptide, we tested archival serum from 229 population-based and 57 clinic-based patients with multiple sclerosis, 99 healthy controls, and 109 disease controls, and CSF from 25 patients with multiple sclerosis and 22 disease controls. We tested all CSF and serum samples from 50 of the clinic-based patients with multiple sclerosis on cells expressing functional KIR4.1, using cell-based immunofluorescence and immunoprecipitation (solubilised recombinant human KIR4.1). We assessed KIR4.1 immunoreactivity in archival brain samples from 15 patients with histopathologically confirmed multiple sclerosis (22 plaques [eight early active, eight inactive, and six remyelinated], 13 periplaque regions and eight normal-appearing white-matter and grey-matter regions) and from three controls with non-neurological diseases. FINDINGS Three of 286 serum samples from patients with multiple sclerosis and two of 208 serum samples from controls showed KIR4.1 reactivity on ELISA; none of the CSF samples from patients or controls showed KIR4.1 reactivity. IgG in none of the 50 serum samples from clinic-based patients immunoprecipitated KIR4.1, but a commercial KIR4.1-specific control IgG did. By immunofluorescence, one of 50 serum samples from patients with multiple sclerosis yielded faint plasmalemmal staining on both KIR4.1-expressing and non-expressing cells; 16 bound faintly to intracellular components. In all cases, IgG binding was quenched by absorption with liver powder or lysates from non-transfected cells. Binding by the KIR4.1-specific control IgG was quenched only by lysates containing KIR4.1. IgG in none of the 25 CSF samples from patients with multiple sclerosis bound to KIR4.1-transfected cells. Glial KIR4.1 immunoreactivity was increased relative to expression in healthy control brain in all active demyelinating lesions, remyelinated lesions, and periplaque white matter regions. INTERPRETATION We did not detect KIR4.1-specific IgG in serum or CSF from patients with multiple sclerosis or KIR4.1 loss from glia in multiple sclerosis lesions. Serological testing for KIR4.1-specific IgG is unlikely to aid diagnosis of multiple sclerosis. The target antigen of multiple sclerosis remains elusive. FUNDING The National Institutes of Health, the National Multiple Sclerosis Society, and the Mayo Clinic Robert and Arlene Kogod Center on Aging.
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Affiliation(s)
- Adipong Brickshawana
- Department of Immunology, Mayo Clinic, Rochester, MN, USA; Department of Neurology, Mayo Clinic, Rochester, MN, USA
| | - Shannon R Hinson
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Michael F Romero
- Department of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
| | | | - Yong Guo
- Department of Neurology, Mayo Clinic, Rochester, MN, USA
| | | | - Andrew McKeon
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Sean J Pittock
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA; Department of Neurology, Mayo Clinic, Rochester, MN, USA
| | - Min-Hwang Chang
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
| | - An-Ping Chen
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
| | - Thomas J Kryzer
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - James P Fryer
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Sarah M Jenkins
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA
| | - Philippe Cabre
- Pierre Zobda Quitman Hospital, CHRU de Fort de France, Martinique
| | - Vanda A Lennon
- Department of Immunology, Mayo Clinic, Rochester, MN, USA; Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA; Department of Neurology, Mayo Clinic, Rochester, MN, USA.
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23
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Fryer JP, Lennon VA, Pittock SJ, Jenkins SM, Fallier-Becker P, Clardy SL, Horta E, Jedynak EA, Lucchinetti CF, Shuster EA, Weinshenker BG, Wingerchuk DM, McKeon A. AQP4 autoantibody assay performance in clinical laboratory service. Neurol Neuroimmunol Neuroinflamm 2014; 1:e11. [PMID: 25340055 PMCID: PMC4202686 DOI: 10.1212/nxi.0000000000000011] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Accepted: 03/31/2014] [Indexed: 01/23/2023]
Abstract
Objective: To compare performance of contemporary aquaporin-4–immunoglobulin (Ig) G assays in clinical service. Methods: Sera from neurologic patients (4 groups) and controls were tested initially by service ELISA (recombinant human aquaporin-4, M1 isoform) and then by cell-based fluorescence assays: fixed (CBA, M1-aquaporin-4, observer-scored) and live (fluorescence-activated cell sorting [FACS], M1 and M23 aquaporin-4 isoforms). Group 1: all Mayo Clinic patients tested from January to May 2012; group 2: consecutive aquaporin-4-IgG–positive patients from September 2011 (Mayo and non-Mayo); group 3: suspected ELISA false-negatives from 2011 to 2013 (physician-reported, high likelihood of neuromyelitis optica spectrum disorders [NMOSDs] clinically); group 4: suspected ELISA false-positives (physician-reported, not NMOSD clinically). Results: Group 1 (n = 388): M1-FACS assay performed optimally (areas under the curves: M1 = 0.64; M23 = 0.57 [p = 0.02]). Group 2 (n = 30): NMOSD clinical diagnosis was confirmed by: M23-FACS, 24; M1-FACS, 23; M1-CBA, 20; and M1-ELISA, 18. Six results were suspected false-positive: M23-FACS, 2; M1-ELISA, 2; and M23-FACS, M1-FACS, and M1-CBA, 2. Group 3 (n = 31, suspected M1-ELISA false-negatives): results were positive for 5 sera: M1-FACS, 5; M23-FACS, 3; and M1-CBA, 2. Group 4 (n = 41, suspected M1-ELISA false-positives): all negative except 1 (positive only by M1-CBA). M1/M23-cotransfected cells expressing smaller membrane arrays of aquaporin-4 yielded fewer false- positive FACS results than M23-transfected cells. Conclusion: Aquaporin-4-transfected CBAs, particularly M1-FACS, perform optimally in aiding NMOSD serologic diagnosis. High-order arrays of M23-aquaporin-4 may yield false-positive results by binding IgG nonspecifically.
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Affiliation(s)
- J P Fryer
- Departments of Laboratory Medicine and Pathology (J.P.F., V.A.L., S.J.P., E.H., E.A.J., A.M.), Neurology (V.A.L., S.J.P., S.L.C., C.F.L., B.G.W., A.M.), Immunology (V.A.L.), and Health Sciences Research (S.M.J.), College of Medicine, Mayo Clinic, Rochester, MN; Institute of Pathology and Neuropathology (P. F.-B.), University of Tubingen, Germany; Department of Neurology (E.A.S.), College of Medicine, Mayo Clinic, Jacksonville, FL; and Department of Neurology (D.M.W.), College of Medicine, Mayo Clinic, Scottsdale, AZ
| | - V A Lennon
- Departments of Laboratory Medicine and Pathology (J.P.F., V.A.L., S.J.P., E.H., E.A.J., A.M.), Neurology (V.A.L., S.J.P., S.L.C., C.F.L., B.G.W., A.M.), Immunology (V.A.L.), and Health Sciences Research (S.M.J.), College of Medicine, Mayo Clinic, Rochester, MN; Institute of Pathology and Neuropathology (P. F.-B.), University of Tubingen, Germany; Department of Neurology (E.A.S.), College of Medicine, Mayo Clinic, Jacksonville, FL; and Department of Neurology (D.M.W.), College of Medicine, Mayo Clinic, Scottsdale, AZ
| | - S J Pittock
- Departments of Laboratory Medicine and Pathology (J.P.F., V.A.L., S.J.P., E.H., E.A.J., A.M.), Neurology (V.A.L., S.J.P., S.L.C., C.F.L., B.G.W., A.M.), Immunology (V.A.L.), and Health Sciences Research (S.M.J.), College of Medicine, Mayo Clinic, Rochester, MN; Institute of Pathology and Neuropathology (P. F.-B.), University of Tubingen, Germany; Department of Neurology (E.A.S.), College of Medicine, Mayo Clinic, Jacksonville, FL; and Department of Neurology (D.M.W.), College of Medicine, Mayo Clinic, Scottsdale, AZ
| | - S M Jenkins
- Departments of Laboratory Medicine and Pathology (J.P.F., V.A.L., S.J.P., E.H., E.A.J., A.M.), Neurology (V.A.L., S.J.P., S.L.C., C.F.L., B.G.W., A.M.), Immunology (V.A.L.), and Health Sciences Research (S.M.J.), College of Medicine, Mayo Clinic, Rochester, MN; Institute of Pathology and Neuropathology (P. F.-B.), University of Tubingen, Germany; Department of Neurology (E.A.S.), College of Medicine, Mayo Clinic, Jacksonville, FL; and Department of Neurology (D.M.W.), College of Medicine, Mayo Clinic, Scottsdale, AZ
| | - P Fallier-Becker
- Departments of Laboratory Medicine and Pathology (J.P.F., V.A.L., S.J.P., E.H., E.A.J., A.M.), Neurology (V.A.L., S.J.P., S.L.C., C.F.L., B.G.W., A.M.), Immunology (V.A.L.), and Health Sciences Research (S.M.J.), College of Medicine, Mayo Clinic, Rochester, MN; Institute of Pathology and Neuropathology (P. F.-B.), University of Tubingen, Germany; Department of Neurology (E.A.S.), College of Medicine, Mayo Clinic, Jacksonville, FL; and Department of Neurology (D.M.W.), College of Medicine, Mayo Clinic, Scottsdale, AZ
| | - S L Clardy
- Departments of Laboratory Medicine and Pathology (J.P.F., V.A.L., S.J.P., E.H., E.A.J., A.M.), Neurology (V.A.L., S.J.P., S.L.C., C.F.L., B.G.W., A.M.), Immunology (V.A.L.), and Health Sciences Research (S.M.J.), College of Medicine, Mayo Clinic, Rochester, MN; Institute of Pathology and Neuropathology (P. F.-B.), University of Tubingen, Germany; Department of Neurology (E.A.S.), College of Medicine, Mayo Clinic, Jacksonville, FL; and Department of Neurology (D.M.W.), College of Medicine, Mayo Clinic, Scottsdale, AZ
| | - E Horta
- Departments of Laboratory Medicine and Pathology (J.P.F., V.A.L., S.J.P., E.H., E.A.J., A.M.), Neurology (V.A.L., S.J.P., S.L.C., C.F.L., B.G.W., A.M.), Immunology (V.A.L.), and Health Sciences Research (S.M.J.), College of Medicine, Mayo Clinic, Rochester, MN; Institute of Pathology and Neuropathology (P. F.-B.), University of Tubingen, Germany; Department of Neurology (E.A.S.), College of Medicine, Mayo Clinic, Jacksonville, FL; and Department of Neurology (D.M.W.), College of Medicine, Mayo Clinic, Scottsdale, AZ
| | - E A Jedynak
- Departments of Laboratory Medicine and Pathology (J.P.F., V.A.L., S.J.P., E.H., E.A.J., A.M.), Neurology (V.A.L., S.J.P., S.L.C., C.F.L., B.G.W., A.M.), Immunology (V.A.L.), and Health Sciences Research (S.M.J.), College of Medicine, Mayo Clinic, Rochester, MN; Institute of Pathology and Neuropathology (P. F.-B.), University of Tubingen, Germany; Department of Neurology (E.A.S.), College of Medicine, Mayo Clinic, Jacksonville, FL; and Department of Neurology (D.M.W.), College of Medicine, Mayo Clinic, Scottsdale, AZ
| | - C F Lucchinetti
- Departments of Laboratory Medicine and Pathology (J.P.F., V.A.L., S.J.P., E.H., E.A.J., A.M.), Neurology (V.A.L., S.J.P., S.L.C., C.F.L., B.G.W., A.M.), Immunology (V.A.L.), and Health Sciences Research (S.M.J.), College of Medicine, Mayo Clinic, Rochester, MN; Institute of Pathology and Neuropathology (P. F.-B.), University of Tubingen, Germany; Department of Neurology (E.A.S.), College of Medicine, Mayo Clinic, Jacksonville, FL; and Department of Neurology (D.M.W.), College of Medicine, Mayo Clinic, Scottsdale, AZ
| | - E A Shuster
- Departments of Laboratory Medicine and Pathology (J.P.F., V.A.L., S.J.P., E.H., E.A.J., A.M.), Neurology (V.A.L., S.J.P., S.L.C., C.F.L., B.G.W., A.M.), Immunology (V.A.L.), and Health Sciences Research (S.M.J.), College of Medicine, Mayo Clinic, Rochester, MN; Institute of Pathology and Neuropathology (P. F.-B.), University of Tubingen, Germany; Department of Neurology (E.A.S.), College of Medicine, Mayo Clinic, Jacksonville, FL; and Department of Neurology (D.M.W.), College of Medicine, Mayo Clinic, Scottsdale, AZ
| | - B G Weinshenker
- Departments of Laboratory Medicine and Pathology (J.P.F., V.A.L., S.J.P., E.H., E.A.J., A.M.), Neurology (V.A.L., S.J.P., S.L.C., C.F.L., B.G.W., A.M.), Immunology (V.A.L.), and Health Sciences Research (S.M.J.), College of Medicine, Mayo Clinic, Rochester, MN; Institute of Pathology and Neuropathology (P. F.-B.), University of Tubingen, Germany; Department of Neurology (E.A.S.), College of Medicine, Mayo Clinic, Jacksonville, FL; and Department of Neurology (D.M.W.), College of Medicine, Mayo Clinic, Scottsdale, AZ
| | - D M Wingerchuk
- Departments of Laboratory Medicine and Pathology (J.P.F., V.A.L., S.J.P., E.H., E.A.J., A.M.), Neurology (V.A.L., S.J.P., S.L.C., C.F.L., B.G.W., A.M.), Immunology (V.A.L.), and Health Sciences Research (S.M.J.), College of Medicine, Mayo Clinic, Rochester, MN; Institute of Pathology and Neuropathology (P. F.-B.), University of Tubingen, Germany; Department of Neurology (E.A.S.), College of Medicine, Mayo Clinic, Jacksonville, FL; and Department of Neurology (D.M.W.), College of Medicine, Mayo Clinic, Scottsdale, AZ
| | - A McKeon
- Departments of Laboratory Medicine and Pathology (J.P.F., V.A.L., S.J.P., E.H., E.A.J., A.M.), Neurology (V.A.L., S.J.P., S.L.C., C.F.L., B.G.W., A.M.), Immunology (V.A.L.), and Health Sciences Research (S.M.J.), College of Medicine, Mayo Clinic, Rochester, MN; Institute of Pathology and Neuropathology (P. F.-B.), University of Tubingen, Germany; Department of Neurology (E.A.S.), College of Medicine, Mayo Clinic, Jacksonville, FL; and Department of Neurology (D.M.W.), College of Medicine, Mayo Clinic, Scottsdale, AZ
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24
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Jiao Y, Fryer JP, Lennon VA, McKeon A, Jenkins SM, Smith CY, Quek AML, Weinshenker BG, Wingerchuk DM, Shuster EA, Lucchinetti CF, Pittock SJ. Aquaporin 4 IgG serostatus and outcome in recurrent longitudinally extensive transverse myelitis. JAMA Neurol 2014; 71:48-54. [PMID: 24248262 DOI: 10.1001/jamaneurol.2013.5055] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
IMPORTANCE Studies focused on recurrent longitudinally extensive transverse myelitis (rLETM) are lacking. OBJECTIVES To determine the aquaporin 4 (AQP4) IgG detection rate using recombinant human APQ4-based assays in sequential serum specimens collected from patients with rLETM categorized as negative by first-generation tissue-based indirect immunofluorescence (IIF) assay and to define the clinical characteristics and motor disability outcomes in AQP4-IgG-positive rLETM. DESIGN, SETTING, AND PARTICIPANTS A search of the Mayo Clinic computerized central diagnostic index (October 1, 2005, through November 30, 2011), cross-linked with the Neuroimmunology Laboratory database, identified 48 patients with rLETM, of whom 36 (75%) were positive and 12 (25%) negative for neuromyelitis optica (NMO) IgG (per IIF of serial serum specimens). Stored serum specimens from "seronegative" patients were retested with recombinant human AQP4-based assays, including enzyme-linked immunosorbent, transfected cell-based, and fluorescence-activated cell-sorting assays. Control patients included 140 AQP4-IgG-positive patients with NMO, of whom a subgroup of 20 initially presented with 2 attacks of transverse myelitis (rLETM-onset NMO). MAIN OUTCOMES AND MEASURES AQP4-IgG serostatus, clinical characteristics, and Expanded Disability Status Scale score. RESULTS Six patients with negative IIF results were reclassified as AQP4-IgG positive, yielding an overall AQP4-IgG seropositivity rate of 89%. Fluorescence-activated cell-sorting, cell-based, and enzyme-linked immunosorbent assays improved the detection rate to 89%, 85%, and 81%, respectively. The female to male ratio was 2:3 for AQP4-IgG-negative rLETM and 5:1 for AQP4-IgG-positive patients. The AQP4-IgG-positive patients with rLETM or rLETM-onset NMO were similar in age at onset, sex ratio, attack severity, relapse rate, and motor disability. From Kaplan-Meier analyses, 36% of AQP4-IgG-positive patients with rLETM are anticipated to need a cane to walk within 5 years after onset. For patients with rLETM-onset NMO, the median time from onset to first optic neuritis attack (54 months) was similar to the median disease duration for AQP4-IgG-positive patients with rLETM (59 months). The median number of attacks was 3 for AQP4-IgG-positive patients with rLETM (range, 2-22), and the first optic neuritis attack for those with rLETM-onset NMO followed a median of 3 myelitis attacks (range, 2-19). Immunosuppressant therapy reduced the relapse rate in both AQP4-IgG-positive and AQP4-IgG-negative patients with rLETM. CONCLUSIONS AND RELEVANCE Recombinant antigen-based assays significantly increase AQP4-IgG detection in patients with rLETM, and AQP4-IgG-negative adults with rLETM are rare. Evolution to NMO can be anticipated in AQP4-IgG-positive patients. Early initiation of immunotherapy may result in a more favorable motor outcome.
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Affiliation(s)
- Yujuan Jiao
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - James P Fryer
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - Vanda A Lennon
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota2Department of Neurology, Mayo Clinic, Rochester, Minnesota3Department of Immunology, Mayo Clinic, Rochester, Minnesota
| | - Andrew McKeon
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota2Department of Neurology, Mayo Clinic, Rochester, Minnesota
| | - Sarah M Jenkins
- Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota
| | - Carin Y Smith
- Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota
| | - Amy M L Quek
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | | | | | | | | | - Sean J Pittock
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota2Department of Neurology, Mayo Clinic, Rochester, Minnesota
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Jiao Y, Fryer JP, Lennon VA, Jenkins SM, Quek AML, Smith CY, McKeon A, Costanzi C, Iorio R, Weinshenker BG, Wingerchuk DM, Shuster EA, Lucchinetti CF, Pittock SJ. Updated estimate of AQP4-IgG serostatus and disability outcome in neuromyelitis optica. Neurology 2013; 81:1197-204. [PMID: 23997151 DOI: 10.1212/wnl.0b013e3182a6cb5c] [Citation(s) in RCA: 174] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To 1) determine, using contemporary recombinant antigen-based assays, the aquaporin-4 (AQP4)-immunoglobulin G (IgG) detection rate in sequential sera of patients assigned a clinical diagnosis of neuromyelitis optica (NMO) but initially scored negative by tissue-based indirect immunofluorescence (IIF) assay; and 2) evaluate the impact of serostatus on phenotype and outcome. METHODS From Mayo Clinic records (2005-2011), we identified 163 patients with NMO; 110 (67%) were seropositive by IIF and 53 (33%) were scored seronegative. Available stored sera from 49 "seronegative" patients were tested by ELISA, AQP4-transfected cell-based assay, and in-house fluorescence-activated cell sorting assay. Clinical characteristics were compared based on final serostatus. RESULTS Thirty of the 49 IIF-negative patients (61%) were reclassified as seropositive, yielding an overall AQP4-IgG seropositivity rate of 88% (i.e., 12% seronegative). The fluorescence-activated cell sorting assay improved the detection rate to 87%, cell-based assay to 84%, and ELISA to 79%. The sex ratio (female to male) was 1:1 for seronegatives and 9:1 for seropositives (p < 0.0001). Simultaneous optic neuritis and transverse myelitis as onset attack type (i.e., within 30 days of each other) occurred in 32% of seronegatives and in 3.6% of seropositives (p < 0.0001). Relapse rate, disability outcome, and other clinical characteristics did not differ significantly. CONCLUSIONS Serological tests using recombinant AQP4 antigen are significantly more sensitive than tissue-based IIF for detecting AQP4-IgG. Testing should precede immunotherapy; if negative, later-drawn specimens should be tested. AQP4-IgG-seronegative NMO is less frequent than previously reported and is clinically similar to AQP4-IgG-seropositive NMO.
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Affiliation(s)
- Yujuan Jiao
- From the Departments of Laboratory Medicine and Pathology (Y.J., J.P.F., V.A.L., A.M.L.Q., A.M., R.I., S.J.P.), Neurology (V.A.L., A.M., C.C., B.G.W., C.F.L., S.J.P.), Immunology (V.A.L.), and Health Sciences Research (S.M.J., C.Y.S.), College of Medicine, Mayo Clinic, Rochester, MN; Department of Neurology (D.M.W.), College of Medicine, Mayo Clinic, Scottsdale, AZ; and Department of Neurology (E.A.S.), College of Medicine, Mayo Clinic, Jacksonville, FL
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Meeusen JW, Haselkorn KE, Fryer JP, Kryzer TJ, Gibbons SJ, Xiao Y, Lennon VA. Gastrointestinal hypomotility with loss of enteric nicotinic acetylcholine receptors: active immunization model in mice. Neurogastroenterol Motil 2013; 25:84-8.e10. [PMID: 23072523 PMCID: PMC3535544 DOI: 10.1111/nmo.12030] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Autoimmune gastrointestinal dysmotility (AGID) is a limited form of dysautonomia. The only proven effector to date is IgG specific for ganglionic nicotinic-acetylcholine receptors containing α3 subunits [α3*- nicotinic acetylcholine receptor (nAChR)]. Rabbits immunized with recombinant α3-polypeptide produce α3*-nAChR autoantibodies, and profound AGID ensues. Human and rabbit α3*-nAChR-specific-IgGs induce transient hypomotility when injected into mice. Here, we describe success and problems encountered inducing gastrointestinal hypomotility in mice by active immunization. METHODS We repeatedly injected young adult mice of seven different strains susceptible to autoimmunity (spontaneous diabetes or neural antigen immunization-induced myasthenia gravis or encephalomyelitis) with: (i) α3-polypeptide, intradermally or (ii) live α3*-nAChR-expressing xenogeneic cells, intraperitoneally. We measured serum α3*-nAChR-IgG twice monthly, and terminally assessed blue dye gastrointestinal transit, total small intestinal α3*-nAChR content (radiochemically) and myenteric plexus neuron numbers (immunohistochemically, ileal-jejunal whole-mount preparations). KEY RESULTS Standard cutaneous inoculation with α3-polypeptide was minimally immunogenic, regardless of dose. Intraperitoneally injected live cells were potently immunogenic. Self-reactive α3*-nAChR-IgG was induced only by rodent immunogen; small intestinal transit slowing and enteric α3*-nAChR loss required high serum levels. Ganglionic neurons were not lost. CONCLUSIONS & INFERENCES Autoimmune gastrointestinal dysmotility is inducible in mice by active immunization. Accompanying enteric α3*-nAChR reduction without neuronal death is consistent with an IgG-mediated rather than T cell-mediated pathogenesis, as is improvement of symptoms in patients receiving antibody-depleting therapies.
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Affiliation(s)
- Jeffrey W. Meeusen
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | | | - James P. Fryer
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - Thomas J. Kryzer
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - Simon J. Gibbons
- Department of Enteric Neuroscience Program, Mayo Clinic, Rochester, MN
| | - Yingxian Xiao
- Department of Pharmacology and Physiology, Georgetown University School of Medicine, Washington, DC
| | - Vanda A. Lennon
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN,Department of Immunology, Mayo Clinic, Rochester, MN,Department of Neurology, Mayo Clinic, Rochester, MN
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Iorio R, Fryer JP, Hinson SR, Fallier-Becker P, Wolburg H, Pittock SJ, Lennon VA. Astrocytic autoantibody of neuromyelitis optica (NMO-IgG) binds to aquaporin-4 extracellular loops, monomers, tetramers and high order arrays. J Autoimmun 2012; 40:21-7. [PMID: 22906356 DOI: 10.1016/j.jaut.2012.07.008] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Revised: 07/19/2012] [Accepted: 07/23/2012] [Indexed: 12/12/2022]
Abstract
The principal central nervous system (CNS) water channel, aquaporin-4 (AQP4), is confined to astrocytic and ependymal membranes and is the target of a pathogenic autoantibody, neuromyelitis optica (NMO)-IgG. This disease-specific autoantibody unifies a spectrum of relapsing CNS autoimmune inflammatory disorders of which NMO exemplifies the classic phenotype. Multiple sclerosis and other immune-mediated demyelinating disorders of the CNS lack a distinctive biomarker. Two AQP4 isoforms, M1 and M23, exist as homotetrameric and heterotetrameric intramembranous particles (IMPs). Orthogonal arrays of predominantly M23 particles (OAPs) are an ultrastructural characteristic of astrocytic membranes. We used high-titered serum from 32 AQP4-IgG-seropositive patients and 85 controls to investigate the nature and molecular location of AQP4 epitopes that bind NMO-IgG, and the influence of supramolecular structure. NMO-IgG bound to denatured AQP4 monomers (68% of cases), to native tetramers and high order arrays (90% of cases), and to AQP4 in live cell membranes (100% of cases). Disease-specific epitopes reside in extracellular loop C more than in loops A or E. IgG binding to intracellular epitopes lacks disease specificity. These observations predict greater disease sensitivity and specificity for tissue-based and cell-based serological assays employing "native" AQP4 than assays employing denatured AQP4 and fragments. NMO-IgG binds most avidly to plasma membrane surface AQP4 epitopes formed by loop interactions within tetramers and by intermolecular interactions within high order structures. The relative abundance and localization of AQP4 high order arrays in distinct CNS regions may explain the variability in clinical phenotype of NMO spectrum disorders.
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Affiliation(s)
- Raffaele Iorio
- Department of Laboratory Medicine and Pathology, Mayo Clinic, 200 First Street S.W., Rochester, MN 55905, USA
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Florence LS, Feng S, Foster CE, Fryer JP, Olthoff KM, Pomfret E, Sheiner PA, Sanfey H, Bumgardner GL. Academic careers and lifestyle characteristics of 171 transplant surgeons in the ASTS. Am J Transplant 2011; 11:261-71. [PMID: 21219568 DOI: 10.1111/j.1600-6143.2010.03381.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
This manuscript reports the demographics, education and training, professional activities and lifestyle characteristics of 171 members of the American Society of Transplant Surgeons (ASTS). ASTS members were sent a comprehensive survey by electronic mail. There were 171 respondents who were 49 ± 8 years of age and predominantly Caucasian males. Female transplant surgeons comprised 10% of respondents. ASTS respondents underwent 15.6 ± 1.0 years of education and training (including college, medical school, residency and transplantation fellowship) and had practiced for 14.7 ± 9.2 years. Clinical practice included kidney, pancreas and liver organ transplantation, living donor surgery, organ procurement, vascular access procedures and general surgery. Transplant surgeons also devote a significant amount of time to nonsurgical patient care, research, education and administration. Transplant surgeons, both male and female, reported working approximately 70 h/week and a median of 195 operative cases per year. The anticipated retirement age for men was 64.6 ± 8.6 and for women was 62.2 ± 4.2 years. This is the largest study to date assessing professional and lifestyle characteristics of abdominal transplant surgeons.
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Affiliation(s)
- L S Florence
- Department of Surgery, Swedish Medical Center, Swedish Organ Transplant Program, Seattle, WA, USA
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Hinson SR, McKeon A, Fryer JP, Apiwattanakul M, Lennon VA, Pittock SJ. Prediction of neuromyelitis optica attack severity by quantitation of complement-mediated injury to aquaporin-4-expressing cells. ACTA ACUST UNITED AC 2009; 66:1164-7. [PMID: 19752309 DOI: 10.1001/archneurol.2009.188] [Citation(s) in RCA: 98] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND Recent reports support a pathogenic role in neuromyelitis optica (NMO) for the aquaporin-4 (AQP4)-specific autoantibody (NMO-IgG). Neuromyelitis optica is an inflammatory demyelinating central nervous system disease, usually relapsing, that causes variable degrees of attack-related disability. The NMO-IgG binds in vitro to the extracellular domain of AQP4, activates complement, and causes astrocyte lesioning. OBJECTIVE To compare the prognostic utility of NMO-IgG titer and quantitative measures of complement-mediated injury to AQP4-expressing cells in NMO attacks. DESIGN, SETTING, AND PARTICIPANTS A retrospective clinical-serological correlative study at Mayo Clinic's Neuroimmunology Laboratory was undertaken. Over an 18-month period, we identified NMO-IgG-seropositive patients in whom sufficient serum and adequate clinical information pertaining to NMO attacks (6 severe, 6 mild) were available to analyze clinical-serological correlations. Sera from 9 patients with multiple sclerosis and 9 healthy subjects (all NMO-IgG seronegative) served as controls. Complement activation was measured by quantifying the number of green fluorescent protein-AQP4-transfected HEK 293 cells permeable to the viability dye propidium iodide after exposure to patient serum and active complement. MAIN OUTCOME MEASURES Attack severity (mild or severe), percentage of AQP4-transfected cells lesioned, and NMO-IgG titer. RESULTS The median percentage of AQP4-transfected cells lesioned by complement in the presence of serum from patients with NMO was 14% for patients with mild attacks and 54% for patients with severe attacks (P = .005). Median complement activation values for sera from healthy subjects and patients with multiple sclerosis were 8% and 12%, respectively. Patients with mild NMO attacks and patients with severe NMO attacks did not differ significantly with respect to NMO-IgG titer (P = .089). CONCLUSIONS A laboratory measure of complement-mediated cell injury may serve as a prognostic biomarker in NMO. Larger prospective studies are required to validate this observation.
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Affiliation(s)
- Shannon R Hinson
- Department of Laboratory Medicine and Pathology, Hilton 3-78D, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA
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McKeon A, Fryer JP, Apiwattanakul M, Lennon VA, Hinson SR, Kryzer TJ, Lucchinetti CF, Weinshenker BG, Wingerchuk DM, Shuster EA, Pittock SJ. Diagnosis of Neuromyelitis Spectrum Disorders. ACTA ACUST UNITED AC 2009; 66:1134-8. [DOI: 10.1001/archneurol.2009.178] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Oetting WS, Pietsch J, Brott MJ, Savage S, Fryer JP, Summers CG, King RA. The R402Q tyrosinase variant does not cause autosomal recessive ocular albinism. Am J Med Genet A 2009; 149A:466-9. [DOI: 10.1002/ajmg.a.32654] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Hinson SR, Roemer SF, Lucchinetti CF, Fryer JP, Kryzer TJ, Chamberlain JL, Howe CL, Pittock SJ, Lennon VA. Aquaporin-4-binding autoantibodies in patients with neuromyelitis optica impair glutamate transport by down-regulating EAAT2. ACTA ACUST UNITED AC 2008; 205:2473-81. [PMID: 18838545 PMCID: PMC2571922 DOI: 10.1084/jem.20081241] [Citation(s) in RCA: 272] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Neuromyelitis optica (NMO)-immunoglobulin G (IgG) is a clinically validated serum biomarker that distinguishes relapsing central nervous system (CNS) inflammatory demyelinating disorders related to NMO from multiple sclerosis. This autoantibody targets astrocytic aquaporin-4 (AQP4) water channels. Clinical, radiological, and immunopathological data suggest that NMO-IgG might be pathogenic. Characteristic CNS lesions exhibit selective depletion of AQP4, with and without associated myelin loss; focal vasculocentric deposits of IgG, IgM, and complement; prominent edema; and inflammation. The effect of NMO-IgG on astrocytes has not been studied. In this study, we demonstrate that exposure to NMO patient serum and active complement compromises the membrane integrity of CNS-derived astrocytes. Without complement, astrocytic membranes remain intact, but AQP4 is endocytosed with concomitant loss of Na+-dependent glutamate transport and loss of the excitatory amino acid transporter 2 (EAAT2) . Our data suggest that EAAT2 and AQP4 exist in astrocytic membranes as a macromolecular complex. Transport-competent EAAT2 protein is up-regulated in differentiating astrocyte progenitors and in nonneural cells expressing AQP4 transgenically. Marked reduction of EAAT2 in AQP4-deficient regions of NMO patient spinal cord lesions supports our immunocytochemical and immunoprecipitation data. Thus, binding of NMO-IgG to astrocytic AQP4 initiates several potentially neuropathogenic mechanisms: complement activation, AQP4 and EAAT2 down-regulation, and disruption of glutamate homeostasis.
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Affiliation(s)
- Shannon R Hinson
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
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McKeon A, Lennon VA, Lotze T, Tenenbaum S, Ness JM, Rensel M, Kuntz NL, Fryer JP, Homburger H, Hunter J, Weinshenker BG, Krecke K, Lucchinetti CF, Pittock SJ. CNS aquaporin-4 autoimmunity in children. Neurology 2008; 71:93-100. [PMID: 18509092 DOI: 10.1212/01.wnl.0000314832.24682.c6] [Citation(s) in RCA: 212] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND In adult patients, autoantibodies targeting the water channel aquaporin-4 (AQP4) are a biomarker for a spectrum of CNS inflammatory demyelinating disorders with predilection for optic nerves and spinal cord (neuromyelitis optica [NMO]). Here we describe the neurologic, serologic, and radiographic findings associated with CNS AQP4 autoimmunity in childhood. METHODS A total of 88 consecutive seropositive children were identified through service evaluation for NMO-IgG. Sera of 75 were tested for coexisting autoantibodies. Clinical information was available for 58. RESULTS Forty-two patients (73%) were non-Caucasian, and 20 (34%) had African ethnicity. Median age at symptom onset was 12 years (range 4-18). Fifty-seven (98%) had attacks of either optic neuritis (n = 48; 83%) or transverse myelitis (n = 45; 78%), or both. Twenty-six (45%) had episodic cerebral symptoms (encephalopathy, ophthalmoparesis, ataxia, seizures, intractable vomiting, or hiccups). Thirty-eight (68%) had brain MRI abnormalities, predominantly involving periventricular areas (in descending order of frequency): the medulla, supratentorial and infratentorial white matter, midbrain, cerebellum, thalamus, and hypothalamus. Additional autoantibodies were detected in 57 of 75 patients (76%), and 16 of 38 (42%) had a coexisting autoimmune disorder recorded (systemic lupus erythematosus, Sjögren syndrome, juvenile rheumatoid arthritis, Graves disease). Attacks were recurrent in 54 patients (93%; median follow-up, 12 months). Forty-three of 48 patients (90%) had residual disability: 26 (54%) visual impairment and 21 (44%) motor deficits (median Expanded Disability Status Scale 4.0 at 12 months). CONCLUSIONS Aquaporin-4 autoimmunity is a distinctive recurrent and widespread inflammatory CNS disease in children.
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Affiliation(s)
- A McKeon
- Departments of Neurology and Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
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Hinson SR, Pittock SJ, Lucchinetti CF, Roemer SF, Fryer JP, Kryzer TJ, Lennon VA. Pathogenic potential of IgG binding to water channel extracellular domain in neuromyelitis optica. Neurology 2007; 69:2221-31. [PMID: 17928579 DOI: 10.1212/01.wnl.0000289761.64862.ce] [Citation(s) in RCA: 356] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Autoantibody specific for the aquaporin-4 astrocytic water channel is restricted to serum and CSF of patients with neuromyelitis optica (NMO) and related CNS inflammatory demyelinating disorders (relapsing optic neuritis and longitudinally extensive transverse myelitis). NMO-typical lesions are distinct from MS-typical lesions. Aquaporin-4 is lost selectively at vasculocentric sites of edema/inflammation coinciding with focal deposits of immunoglobulins (Ig) G, M, and terminal complement products, with and without myelin loss. Evidence for antigen-specific autoantibody pathogenicity is lacking. METHODS We used confocal microscopy and flow cytometry to evaluate the selectivity and immunopathological consequences of Ig binding to surface epitopes of living target cells expressing aquaporin-4 fused at its cytoplasmic N-terminus with GFP. We tested serum, IgG-enriched and IgG-depleted serum fractions, and CSF from patients with NMO, neurologic control patients, and healthy subjects. We also analyzed aquaporin-4 immunoreactivity in myelinated adult mouse optic nerves and spinal cord, and plasma cell Ig isotypes in archived brain tissue from an NMO patient. RESULTS Serum IgG from patients with NMO binds to the extracellular domain of aquaporin-4; it is predominantly IgG(1), and it initiates two potentially competing outcomes, aquaporin-4 endocytosis/degradation and complement activation. Serum and CSF lack aquaporin-4-specific IgM, and plasma cells in CNS lesions of NMO contain only IgG. Paranodal astrocytic endfeet highly express aquaporin-4. CONCLUSIONS NMO patients' serum IgG has a selective pathologic effect on cell membranes expressing aquaporin-4. IgG targeting astrocytic processes around nodes of Ranvier could initiate demyelination.
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Affiliation(s)
- S R Hinson
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
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Abstract
The number of liver transplants performed yearly has slowly and steadily increased over the last 10 years, reaching 6441 procedures in 2005. The number of living donor liver transplants performed rose steadily from 1996 to 2001, when it peaked at 519; since 2003 there have been approximately 320 such procedures performed each year. The continual increase in the size of the waiting list for a liver transplant, which peaked in 2001 at 14 897 patients, was interrupted in 2002 by the implementation of the allocation system based on the model for end-stage liver disease and pediatric end-stage liver disease (MELD/PELD). Activity in all areas of intestinal transplantation continues to increase. One-year patient and graft survival following intestine-alone transplantation now seem to be superior to outcomes following liver-intestine transplantation. Other topics covered here include the recent 'Share 15' component of the MELD allocation system; liver transplantation following donation after cardiac death; simultaneous liver-kidney transplantation and waiting list and post-transplant outcomes for both liver and intestine transplantation, broken out by a variety of clinical and demographic factors.
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Affiliation(s)
- E A Pomfret
- Lahey Clinic Medical Center, Burlington, Massachusetts, USA.
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Abstract
For many applications avian antibody from egg yolk (IgY) offers advantages over the well-known mammalian antibodies. Different experimental techniques for the purification of IgY from chickens immunized with an alphagalactose-containing antigen (alphaGal-trisaccharide) were compared. These included ammonium sulfate precipitation, filtration with diatomaceous earth, treatment with deoxycholate, and thiophilic and affinity chromatography. Samples were tested for overall purity, protein and lipid content, and specific activity. Evaluated on the basis of these results and the simplicity of the process, the favored purification method is ammonium sulfate precipitation of diluted egg yolk directly followed by affinity chromatography. The high lipid content of IgY preparations is greatly reduced by either thiophilic or affinity chromatography. Affinity purification of ammonium sulfate precipitated material resulted in anti-alphaGal-trisaccharide IgY preparations with approximately 1% of the original protein content but approximately 100-fold higher specific activity for the alphaGal-trisaccharide epitope.
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Affiliation(s)
- C L Cook
- Ophidian Pharmaceuticals Inc., 5445 E. Cheryl Parkway, Madison, WI 53711, USA
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Cook CL, Pao W, Firca JR, Anderson BE, Fryer JP. Simple purification methods for an alphagalactose-specific antibody from chicken eggs. J Biosci Bioeng 2005; 91:305-10. [PMID: 16232994 DOI: 10.1263/jbb.91.305] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2000] [Accepted: 01/08/2001] [Indexed: 11/17/2022]
Abstract
For many applications avian antibody from egg yolk (IgY) offers advantages over the well-known mammalian antibodies. Different experimental techniques for the purification of IgY from chickens immunized with an alphagalactose-containing antigen (alphaGal-trisaccharide) were compared. These included ammonium sulfate precipitation, filtration with diatomaceous earth, treatment with deoxycholate, and thiophilic and affinity chromatography. Samples were tested for overall purity, protein and lipid content, and specific activity. Evaluated on the basis of these results and the simplicity of the process, the favored purification method is ammonium sulfate precipitation of diluted egg yolk directly followed by affinity chromatography. The high lipid content of IgY preparations is greatly reduced by either thiophilic or affinity chromatography. Affinity purification of ammonium sulfate precipitated material resulted in anti-alphaGal-trisaccharide IgY preparations with approximately 1% of the original protein content but approximately 100-fold higher specific activity for the alphaGal-trisaccharide epitope.
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Affiliation(s)
- C L Cook
- Ophidian Pharmaceuticals Inc., 5445 E. Cheryl Parkway, Madison, WI 53711, USA
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Abstract
Mutations of the tyrosinase gene produce oculocutaneous albinism type 1 (OCA1). Most affected individuals are compound heterozygotes with different maternal and paternal mutations, but a substantial number of presumed tyrosinase alleles in these individuals have no identifiable mutation in the coding or proximal promoter region of the gene. This suggests that mutations in other regions of the gene, such as regulatory regions that are removed from the direct proximity of the coding sequence, may account for these currently unidentifiable mutations. The mouse tyrosinase gene has a distal enhancer or locus control region (LCR) that provides position-independent stimulation of gene expression, and a homologous regulatory region (HR) of the human gene could be the site of some of these mutations. We report a region 9 kb upstream of the human tyrosinase transcriptional start site that may be involved in regulation of this gene. Analysis of this region shows DNase I hypersensitivity in a cell lineage-specific pattern, a pattern indicative of regulatory regions of a gene. This region also has significant enhancer function when reporter vectors containing it are transfected into either human or mouse melanocyte cell lines, and elimination of specific sequences with homology to the mouse core enhancer in this region extinguishes the enhancer function. We believe that this region of homology contains sequences critical in the regulation of the human tyrosinase gene and is a candidate for the location of OCA1 mutations.
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Affiliation(s)
- James P Fryer
- Department of Medicine and Institute of Human Genetics, University of Minnesota, Minneapolis, MN 55455, USA
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King RA, Pietsch J, Fryer JP, Savage S, Brott MJ, Russell-Eggitt I, Summers CG, Oetting WS. Tyrosinase gene mutations in oculocutaneous albinism�1 (OCA1): definition of the phenotype. Hum Genet 2003; 113:502-13. [PMID: 13680365 DOI: 10.1007/s00439-003-0998-1] [Citation(s) in RCA: 88] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2003] [Accepted: 06/29/2003] [Indexed: 10/26/2022]
Abstract
Oculocutaneous albinism (OCA) is a common human genetic condition resulting from mutations in at least twelve different genes. OCA1 results from mutations of the tyrosinase gene and presents with the life-long absence of melanin pigment after birth (OCA1A) or with the development of minimal-to-moderate amounts of cutaneous and ocular pigment (OCA1B). Other types of OCA have variable amounts of cutaneous and ocular pigment. We hypothesized that white hair at birth indicates OCA1 and tested this in a sample of 120 probands with OCA and white hair at birth. We found that 102 (85%) of the probands had OCA1 with one or two identifiable tyrosinase gene mutations, with 169 (83%) of the 204 OCA1 tyrosinase gene alleles having identifiable mutations and 35 (17%) having no identifiable change in the coding, splice junction, or proximal promoter regions of the gene. The inability to identify the mutation was more common with OCA1B (24/35, 69%) than with OCA1A (11/35, 31%) alleles. Seven probands with no tyrosinase gene mutations were found to have OCA2 with one or two P gene mutations, and in eleven, no mutations were detected in either gene. We conclude that (1) the presence of white hair at birth is a useful clinical tool suggesting OCA1 in a child or adult with OCA, although OCA2 may also have this presentation; (2) the molecular analysis of the tyrosinase and P genes are necessary for precise diagnosis; and (3) the presence of alleles without identifiable mutations of the tyrosinase gene, particularly in OCA1B, suggests that more complex mutation mechanisms of this gene are common in OCA.
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Affiliation(s)
- Richard A King
- Department of Medicine, University of Minnesota, Minneapolis, Minn. 55455, USA.
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King RA, Willaert RK, Schmidt RM, Pietsch J, Savage S, Brott MJ, Fryer JP, Summers CG, Oetting WS. MC1R mutations modify the classic phenotype of oculocutaneous albinism type 2 (OCA2). Am J Hum Genet 2003; 73:638-45. [PMID: 12876664 PMCID: PMC1180688 DOI: 10.1086/377569] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2003] [Accepted: 06/17/2003] [Indexed: 11/03/2022] Open
Abstract
The heterogeneous group of disorders known as oculocutaneous albinism (OCA) shares cutaneous and ocular hypopigmentation associated with common developmental abnormalities of the eye. Mutations of at least 11 loci produce this phenotype. The majority of affected individuals develop some cutaneous melanin; this is predominantly seen as yellow/blond hair, whereas fewer have brown hair. The OCA phenotype is dependent on the constitutional pigmentation background of the family, with more OCA pigmentation found in families with darker constitutional pigmentation, which indicates that other genes may modify the OCA phenotype. Sequence variation in the melanocortin-1 receptor (MC1R) gene is associated with red hair in the normal population, but red hair is unusual in OCA. We identified eight probands with OCA who had red hair at birth. Mutations in the P gene were responsible for classic phenotype of oculocutaneous albinism type 2 (OCA2) in all eight, and mutations in the MC1R gene were responsible for the red (rather than yellow/blond) hair in the six of eight who continued to have red hair after birth. This is the first demonstration of a gene modifying the OCA phenotype in humans.
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Affiliation(s)
- Richard A King
- Department of Genetics, University of Minnesota, Minneapolis, MN, 55455, USA.
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Abstract
Research on human albinism has been central to many of the major discoveries in human genetics. These include the first evidence that Mendel's rules of genetic segregation apply to humans, first published in 1903. Contrary to initial thought that albinism is caused by mutations in a single gene, we now know that the genetics of albinism are complex. The complexity of albinism was hinted at, in early publications, but has only recently been fully appreciated with the advent of molecular techniques. Currently, 12 different genes have been identified, that when mutated, result in a different type of albinism. Oculocutaneous albinism type 1 (OCA1), resulting from mutations of the tyrosinase gene, is genetically and biochemically the best understood type of albinism. Though much of the research in albinism has involved OCA1, there are many unanswered questions about OCA1 and albinism, in general. The next 100 yr should still provide many surprises as did the first 100 yr.
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Affiliation(s)
- William S Oetting
- Department of Medicine, University of Minnesota, Minneapolis, MN, USA.
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Kaufman DB, Leventhal JR, Gallon LG, Parker MA, Koffron AJ, Fryer JP, Abecassis MM, Stuart FP. Risk factors and impact of cytomegalovirus disease in simultaneous pancreas-kidney transplantation. Transplantation 2001; 72:1940-5. [PMID: 11773893 DOI: 10.1097/00007890-200112270-00013] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND The relevance of cytomegalovirus (CMV) in simultaneous pancreas kidney (SPK) transplant recipients in the modern era of immunosuppression and antiviral therapeutics is largely unquantified. We sought to determine the risk factors of CMV disease and its impact on SPK transplant outcomes in recipients all receiving a consistent regime of maintenance immunosuppression and CMV prophylaxis. METHODS This is a retrospective, single center study of 100 consecutive SPK transplant recipients. All received maintenance immunosuppression with mycophenolate mofetil, tacrolimus, and prednisone. CMV prophylaxis consisted of a short course of parenteral gancyclovir followed by oral gancyclovir. Recipients at high-risk (D+/R-) for CMV also received CMV hyperimmune globulin. Multivariate analysis of risk factors for CMV disease and risk factors for adverse outcomes in SPK transplantation were determined. The effect of duration of prophylaxis on timing and severity of CMV disease in high-risk (D+/R-) SPK transplant recipients was also evaluated. RESULTS The actual 1-year rate of CMV disease was 17.0% (12.0% noninvasive, 5.0% tissue invasive); and according to donor and recipient CMV serological status was: D-/R+: 0%; D-/R-: 2.8%; D+/R+: 25.6%; and D+/R-: 40.6%. Multivariate analysis showed transplantation of organs from a donor with positive CMV serology to be predictive of CMV disease with a relative risk of 63.37 (P=0.0052). In the high-risk (D+/R-) subgroup, the duration of prophylactic therapy delayed onset of CMV disease, but had minimal effect on severity. Invasive CMV disease was an independent predictor of mortality but did not decrease kidney or pancreas allograft survival. CONCLUSIONS Outcomes of SPK transplantation have improved in the current era of modern immunosuppression, yet CMV remains an important pathogen. The serological status of the organ donor and the duration of CMV prophylaxis are predictive of who and when CMV disease may occur. Nevertheless, new strategies that reduce risk and severity of CMV disease are still needed.
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Affiliation(s)
- D B Kaufman
- Department of Surgery, Division of Transplantation, Northwestern University Medical School, Chicago, IL 60611, USA
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44
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Abstract
We have identified and isolated ectopically expressed tyrosinase transcripts in normal human melanocytes and lymphocytes and in a human melanoma (MNT-1) cell line to establish a baseline for the expression pattern of this gene in normal tissue. Tyrosinase mRNA from human lymphoblastoid cell lines was reverse transcribed and amplified using specific "nested" primers. This amplification yielded eight identifiable transcripts; five that resulted from alternative splicing patterns arising from the utilization of normal and alternative splice sequences. Identical splicing patterns were found in transcripts from human primary melanocytes in culture and a melanoma cell line, indicating that lymphoblastoid cell lines provide an accurate reflection of transcript processing in melanocytes. Similar splicing patterns have also been found with murine melanocyte tyrosinase transcripts. Our results demonstrate that alternative splicing of human tyrosinase gene transcript produces a number of predictable and identifiable transcripts, and that human lymphoblastoid cell lines provide a source of ectopically expressed transcripts that can be used to study the biology of tyrosinase gene expression in humans.
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Affiliation(s)
- J P Fryer
- Department of Medicine, University of Minnesota Medical School, Minneapolis, Minnesota 55455, USA
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Kaufman DB, Leventhal JR, Elliott MD, Gallon LG, Parker MA, Gheorghiade M, Koffron AJ, Ferrario M, Abecassis MM, Fryer JP, Stuart FP. Pancreas transplantation at Northwestern University. Clin Transpl 2001:239-46. [PMID: 11512317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
The collective advances made by many groups have significantly improved the results of pancreas transplantation. We have focused on the development of safe and effective immunotherapy, including a new protocol of rapid withdrawal of corticosteroids, the analysis of surgical technique of pancreas exocrine drainage on outcome and the role of SPK transplantation in patients with significant cardiovascular disease. We have found that multimodal immunotherapy including induction with tacrolimus-based maintenance combined with either MMF or sirolimus, with or without corticosteroids, resulted in excellent patient and graft survival rates with low rates of rejection. In this setting, enteric drainage was preferable to bladder drainage because of a lower rate of complications leading to hospital readmissions. Careful pretransplant screening for cardiovascular disease should be routinely performed for all SPK candidates. If successful coronary revascularization can be achieved, these patients can safely undergo SPK transplantation, with 5-year outcomes similar to those for recipients without coronary disease. Finally, we have observed that pancreas transplantation has an important ameliorating effect on hypertension that is independent of the method of pancreas exocrine drainage.
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Affiliation(s)
- D B Kaufman
- Northwestern University Medical School, Department of Surgery, Division of Transplantation, Department of Medicine, Divisions of Nephrology and Cardiology, Chicago, Illinois, USA
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Leventhal JR, Su A, Kaufman DB, Abecassis MI, Stuart FP, Anderson B, Fryer JP. Altered infectivity of porcine endogenous retrovirus by "protective" avian antibodies: implications for pig-to-human xenotransplantation. Transplant Proc 2001; 33:690. [PMID: 11267019 DOI: 10.1016/s0041-1345(00)02204-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- J R Leventhal
- Department of Surgery, Division of Organ Transplantation, Northwestern University Medical School, Evanston, Illinois, USA
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Leventhal JR, Martinez W, Roszkowski J, Fryer JP, Kaufman DB, Abecassis MI, Stuart FP, Spear P. Porcine cells are susceptible to infection by human alpha herpesviruses. Transplant Proc 2001; 33:691. [PMID: 11267020 DOI: 10.1016/s0041-1345(00)02205-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- J R Leventhal
- Department of Surgery, Northwestern University Medical School, Evanston, Illinois, USA
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Affiliation(s)
- A Koffron
- Northwestern University Medical School, Chicago, IL, USA
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49
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Abstract
Significantly reduced morbidity and mortality is needed before intestinal transplantation will be applicable in most patients with intestinal failure who are on long-term total parenteral nutrition (TPN). However, transplantation does play a role if TPN fails, with failure defined by Medicare as liver failure, frequent line sepsis, major central vein thrombosis, or recurrent dehydration. Of these complications, the relationship between liver failure and subsequent death in high-risk subgroups of long-term TPN patients has been shown clearly. Patients with less than 100 cm of postduodenal small bowel, an end-jejunostomy, no ileocecal valve or cecum, or persistently elevated liver function levels are at high risk for end-stage liver disease (ESLD). Early referral to experienced centers is suggested in these circumstances. High-risk patients may also take part in clinical trials of promising therapies to increase intestinal adaptation and prevent liver failure. Living donors should be considered for transplant candidates to minimize waiting time and optimize HLA matching. ESLD patients need a liver-intestine transplant. Because their waiting-list mortality is very high, their status on the liver waiting list should be elevated if possible. High incidence of early death from sepsis is reported after intestinal transplant, even at experienced centers. Aggressive measures should be taken if uncontrolled sepsis occurs, including discontinuing immunosuppression and removing the graft. Further research is needed in intestinal immunology and in development of strategies to decrease the need for aggressive immunosuppression in these transplant recipients. The ultimate role of intestinal transplantation will be determined by its capacity to show superiority, both in effectiveness and safety, to long-term TPN.
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Affiliation(s)
- J P Fryer
- Division of Gastroenterology and Hepatology, Inflammatory Bowel Disease Center, Northwestern University Medical School, 676 North St. Clair Street, Suite 880, Chicago, IL 60611, USA.
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Walsh WE, Anderson BE, Ivancic D, Zhang Z, Piccini JP, Rodgers TG, Pao W, Fryer JP. Distribution of, and immune response to, chicken anti-alpha Gal immunoglobulin Y antibodies in wild-type and alpha Gal knockout mice. Immunology 2000; 101:467-73. [PMID: 11122450 PMCID: PMC2327111 DOI: 10.1046/j.1365-2567.2000.00136.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2000] [Revised: 08/07/2000] [Accepted: 08/21/2000] [Indexed: 11/20/2022] Open
Abstract
Chicken antibodies (immunoglobulin Y; IgY) to the alpha Gal epitope (galactose alpha-1,3-galactose) bind to alpha Gal antigens of mouse and porcine tissues and endothelial cells in vitro and block human anti-alpha Gal antibody binding, complement activation and antibody-dependent cell-mediated lysis mechanisms. The activities and toxicity of anti-alpha Gal IgY have not been tested in vivo. In this study, we tested the effects of multiple injections of affinity-purified anti-alpha Gal IgY (AP-IgY) in both wild-type (WT) and alpha-1,3-galactosyltransferase knockout (Gal KO) mice. WT and Gal KO mice were injected once, twice, three, or four times intravenously (i.v.) with AP-IgY and killed at 1 hr or 24 hr. Mice displayed no toxicity to four injections of AP-IgY. Heart, lung, liver, kidney, spleen and pancreatic tissue were evaluated using immunohistochemical techniques for the presence of the alpha Gal epitope using the GSI-B4 lectin, and for bound IgY, as well as mouse IgM and IgG. The binding of AP-IgY antibodies to the endothelium of WT mouse tissues was essentially identical to the pattern of binding of the GSI-B4 lectin after injection of WT mice and death at 1 hr. WT mice killed 24 hr after i.v. injection of AP-IgY showed little remaining bound IgY in their endothelia, indicating that IgY is cleared over that time period. We also evaluated the blood drawn at the time of death for the presence of anti-alpha Gal IgY, anti-IgY IgM and anti-IgY IgG by enzyme-linked immunosorbent assay. Anti-alpha Gal IgY was almost undetectable in WT mouse sera at all injection and killing times. In contrast, Gal KO mouse sera showed increasing anti-alpha Gal IgY levels until 24 hr after the fourth injection, when anti-alpha Gal IgY levels were almost undetectable. Anti-IgY IgM and IgG levels in WT and Gal KO mouse sera showed a typical increase in anti-IgY IgM 24 hr after the second injection (3 days after the first injection) and an increase in anti-IgY IgG 24 hr after the third injection (5 days after the first injection). These results show that IgY binds to alpha Gal epitopes in the WT mice and is cleared sometime over a 24-hr time period and that IgY is an expected immunogen in mice eliciting a rather typical anti-IgY IgM and IgG response.
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Affiliation(s)
- W E Walsh
- Department of Surgery, Northwestern University Medical School, Chicago, IL 60611, USA
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