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Højsgaard Chow H, Petersen ER, Olsson A, Hejgaard Laursen J, Bredahl Hansen M, Oturai AB, Soelberg Sørensen P, Bach Søndergaard H, Sellebjerg F. Age-corrected neurofilament light chain ratio decreases but does not predict relapse in highly active multiple sclerosis patients initiating natalizumab treatment. Mult Scler Relat Disord 2024; 88:105701. [PMID: 38889559 DOI: 10.1016/j.msard.2024.105701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/23/2024] [Accepted: 06/02/2024] [Indexed: 06/20/2024]
Abstract
BACKGROUND Neurofilament light chain (NFL) is a biomarker for monitoring disease activity and treatment response in multiple sclerosis (MS). However, while most agree that NFL levels predict disease activity and worsening, the predictive value of NFL on future relapse risk remains uncertain. OBJECTIVE The primary aim was to evaluate the predictive value of age-corrected serum NFL (sNFL) ratio on relapse risk in highly active relapsing-remitting MS patients (RRMS) treated with natalizumab. A secondary aim was to investigate the predictive value of sNFL ratios for MRI activity. METHODS From January 1, 2006, to December 31, 2010, 355 patients initiated natalizumab treatment at the Danish Multiple Sclerosis Center. 305 patients were anti-natalizumab antibodies negative and had at least one blood sample available for sNFL analysis using single molecule array analysis at baseline, three, six, or 12 months. The patients were either treatment-naïve (n = 8), switching from interferon-β or glatiramer acetate (n = 253), or switching from mitoxantrone (n = 44). An age-corrected ratio was calculated for sNFL. Time to first relapse was calculated from baseline and after re-baseline at 90 days. Data were collected from baseline until the two-year follow-up or end of treatment and included disease duration, expanded disability status scale, previous treatments, relapses 12 months prior to natalizumab initiation, smoking intensity, body mass index, and body weight. In addition, the patients underwent annual MRI of the brain. RESULTS The sNFL ratio was increased in 173 of 287 samples (60.3 %) at baseline, in 119 of 246 samples (48.8 %) at month three, in 109 of 287 samples (38.0 %) at month six, and in 82 of 270 samples (30.4 %) at month 12. The sNFL ratio continuously declined over 12 months with significant decreases for every measuring timepoint: baseline vs. three months p = 3.0 × 10-6; three months vs. six months p = 3.2 × 10-5; six months vs. 12 months p = 0.002. Univariate Cox regression analysis showed that time to first relapse from 1) natalizumab initiation and from 2) re-baseline was associated with the number of relapses in the previous 12 months (hazard ratio 1.31 per relapse, 95 % CI = 1.2-1.5, p = 2.0 × 10-6; and 1.21 per relapse, 95 % CI = 1.1-1.4, p = 0.002, respectively). sNFL ratio at re-baseline was negatively associated with relapse risk (hazard ratio 0.82 per unit; 95 % CI = 0.7-1.0; p = 0.049). A multivariable Cox regression analysis of relapse risk from re-baseline showed that the number of relapses in the 12 months prior to natalizumab treatment (hazard ratio 1.29; 95 % CI = 1.1-1.5; p = 6.0 × 10-4) and smoking (hazard ratio 1.51 per 20 cigarettes per day; 95 % CI = 1.0-2.2; p = 0.030) were associated with increased risk of relapse; sNFL ratio was associated with a lower risk of relapse (hazard ratio = 0.736 per unit; 95 % CI = 0.6-0.9 p = 0.007). In univariate logistic regression analyses, the sNFL ratio at 12 months and values above the 75th and the 90th percentile predicted MRI activity in the following year (odds ratio [OR] = 2.0, 95 % CI = 1.2-3.6, p = 0.012; OR = 2.2, 95 % CI = 1.2-4.1, p = 0.014; and OR = 2.8, 95 % CI = 1.1-6.7, p = 0.026). CONCLUSION In this highly active RRMS cohort, high sNFL ratios reflected previous relapse activity and decreased after initiation of treatment but were not associated with increased relapse risk in the following two years. Pre-treatment relapses and smoking on treatment were predictors of relapse risk after re-baselining at 90 days. MRI activity in year two was predicted by sNFL ratios at month 12.
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Affiliation(s)
- Helene Højsgaard Chow
- Danish Multiple Sclerosis Center, Department of Neurology, Copenhagen University Hospital - Rigshospitalet, Glostrup, Denmark.
| | - Eva Rosa Petersen
- Danish Multiple Sclerosis Center, Department of Neurology, Copenhagen University Hospital - Rigshospitalet, Glostrup, Denmark
| | - Anna Olsson
- Danish Multiple Sclerosis Center, Department of Neurology, Copenhagen University Hospital - Rigshospitalet, Glostrup, Denmark
| | - Julie Hejgaard Laursen
- Danish Multiple Sclerosis Center, Department of Neurology, Copenhagen University Hospital - Rigshospitalet, Glostrup, Denmark
| | - Malene Bredahl Hansen
- Danish Multiple Sclerosis Center, Department of Neurology, Copenhagen University Hospital - Rigshospitalet, Glostrup, Denmark
| | - Annette Bang Oturai
- Danish Multiple Sclerosis Center, Department of Neurology, Copenhagen University Hospital - Rigshospitalet, Glostrup, Denmark
| | - Per Soelberg Sørensen
- Danish Multiple Sclerosis Center, Department of Neurology, Copenhagen University Hospital - Rigshospitalet, Glostrup, Denmark
| | - Helle Bach Søndergaard
- Danish Multiple Sclerosis Center, Department of Neurology, Copenhagen University Hospital - Rigshospitalet, Glostrup, Denmark
| | - Finn Sellebjerg
- Danish Multiple Sclerosis Center, Department of Neurology, Copenhagen University Hospital - Rigshospitalet, Glostrup, Denmark
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Light V, Jones SL, Rahme E, Rousseau K, de Boer S, Vermunt L, Soltaninejad M, Teunissen C, Pijnenburg Y, Ducharme S, Consortium FS. Clinical Accuracy of Serum Neurofilament Light to Differentiate Frontotemporal Dementia from Primary Psychiatric Disorders is Age-Dependent. Am J Geriatr Psychiatry 2024; 32:988-1001. [PMID: 38609836 DOI: 10.1016/j.jagp.2024.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 03/15/2024] [Accepted: 03/19/2024] [Indexed: 04/14/2024]
Abstract
BACKGROUND Symptoms of behavioral variant frontotemporal dementia (bvFTD) overlap with primary psychiatric disorders (PPD) making diagnosis challenging. Serum neurofilament light (sNfL) is a candidate biomarker to distinguish bvFTD from PPD, but large-scale studies in PPD are lacking. OBJECTIVE Determine factors that influence sNfL from a large database of PPD patients, and test its diagnostic accuracy. DESIGN, SETTINGS, SUBJECTS, MEASUREMENTS Clinical data of people aged 40-81 were obtained from healthy subjects (n = 69), and patients with PPD (n = 848) or bvFTD (n = 82). sNfL was measured using Simoa technology on an HD-X instrument. Data were analyzed using general linear models, and Receiver Operating Characteristic (ROC) curve analyses to determine global and age-specific sNfL cutoffs to distinguish bvFTD from PPD, using the Youden Index. RESULTS sNfL increased with age, while sex, BMI and diabetes status were modestly associated with sNfL. sNfL was slightly higher in PPD than healthy subjects (14.1 versus 11.7 pg/mL), when controlling for covariates. sNfL was markedly lower in PPD than bvFTD (14.1 versus 44.1 pg/mL). sNfL could differentiate PPD from bvFTD with an AUC = 0.868, but the effect was driven by the younger subjects between age 40-60 years at a cutoff of 16.0 pg/mL. No valid cutoff was detected over age 60, however, values of sNfL above 38.5 pg/mL, or below 13.9 pg/mL, provided 90% diagnostic certainty of bvFTD or PPD, respectively. CONCLUSION PPD have mildly elevated sNfL compared to healthy subjects but much lower than bvFTD. Results support the use of sNfL as a biomarker to differentiate PPD from bvFTD at age 60 or below, but accuracy decreases in older ages.
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Affiliation(s)
- Victoria Light
- Department of Psychiatry, McGill University (VL, SD), Douglas Mental Health University Institute, Montreal, QC, Canada; Integrated Program of Neuroscience (VL), McGill University, Montreal, QC, Canada
| | | | - Elham Rahme
- Research Institute of the McGill University Health Centre (RI-MUHC) (ER), Montreal, QC, Canada
| | - Katerine Rousseau
- Institut Universitaire en Santé Mentale de Montréal, Département de Psychiatrie (KR), Université de Montréal, Montreal, QC, Canada
| | - Sterre de Boer
- Alzheimer Center Amsterdam, Department of Neurology (SB, YP), Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands; School of Psychology (SB), The University of Sydney, Sydney, NSW, Australia
| | - Lisa Vermunt
- Neurochemistry Laboratory, Department of Laboratory Medicine, Amsterdam Neuroscience, Neurodegeneration, Amsterdam UMC (LV, CT), Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Mahdie Soltaninejad
- McConnell Brain Imaging Centre, Montreal Neurological Institute, Department of Neurology & Neurosurgery (MS, SD), McGill University, Montreal, QC, Canada
| | - Charlotte Teunissen
- Neurochemistry Laboratory, Department of Laboratory Medicine, Amsterdam Neuroscience, Neurodegeneration, Amsterdam UMC (LV, CT), Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Yolande Pijnenburg
- Alzheimer Center Amsterdam, Department of Neurology (SB, YP), Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands
| | - Simon Ducharme
- Department of Psychiatry, McGill University (VL, SD), Douglas Mental Health University Institute, Montreal, QC, Canada; McConnell Brain Imaging Centre, Montreal Neurological Institute, Department of Neurology & Neurosurgery (MS, SD), McGill University, Montreal, QC, Canada.
| | - For Signature Consortium
- Centre de Recherche de l'institut universitaire en santé mentale de Montréal (SC, CCNA), Montreal, QC, Canada
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Bava CI, Valentino P, Malucchi S, Bottero R, Martire S, Sapio AD, Bertolotto A. Prevalence of elevated sNFL in a real-world setting: Results on 908 patients with different multiple sclerosis types and treatment conditions. Mult Scler Relat Disord 2024; 88:105748. [PMID: 38959590 DOI: 10.1016/j.msard.2024.105748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 06/18/2024] [Accepted: 06/23/2024] [Indexed: 07/05/2024]
Abstract
BACKGROUND In the field of research for new validated surrogate biomarkers of treatment efficacy, disease activity and progression in Multiple Sclerosis (MS), serum neurofilament light-chain (sNFL) are actually the best candidate for MS patient monitoring. However, before they can be implemented in clinical practice, their usefulness as additional red flag routine measure must be demonstrated. To tackle the problem, this real-life cross-sectional study at the Regional Referring Center for Multiple Sclerosis (CRESM) aims to characterize sNFL levels and prevalence of elevated sNFL, according to our age-dependent cut-off values, in a large group of patients with different types of MS and treatment conditions. METHODS 908 serum samples from as many MS patients being admitted at CRESM for diagnostic definition and/or during routinary treatment monitoring were consecutively collected between January 2019 and January 2020. sNFL levels were measured by single molecule array (Simoa™) technology on SR-X instrument using NF-light assays (Quanterix); results were interpreted using previously published cut-off values. RESULTS Primary and Secondary Progressive MS (PPMS, SPMS) forms demonstrate higher levels and prevalence of elevated sNFL (PPMS= 32 %, SPMS= 21 %) compared to the Relapse and Remitting one (RRMS = 12 %). Besides, naïve samples of RRMS and PPMS subtypes showed higher prevalence of elevated sNFL (RRMS naïve= 31 %, PPMS naïve=67 %) compared to samples from patients treated for more than 12 months (RRMS treat>12m= 9 %, PPMS treat>12m= 19 %); treated SPMS patients demonstrated higher sNFL levels and a prevalence (22 %) of elevated sNFL compared to RRMS treated patients. Focusing on RRMS, no statistical difference was found between groups of patients treated for whatever time (up to or more than 60 months) and with either DMT type (high or low-efficacy DMT). Finally, RRMS patients treated with all DMTs for more than 12 months, with the exception of teriflunomide and alemtuzumab showed a prevalence of elevated sNFL in the range of 5-10 %. CONCLUSION in a real-world setting comprising about 1000 MS patients, sNFL quantification was elevated in 5-to-67 % of patients, in different MS forms and treatment conditions. Elevated levels of sNFL must be considered a red-flag suggesting the need of a further clinical monitoring in any circumstance, as it can be indicative of new inflammation, ongoing degeneration or co-morbidities. This study supports the introduction of sNFL quantification in everyday patient management.
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Affiliation(s)
- Cecilia Irene Bava
- NICO - Neuroscience Institute Cavalieri Ottolenghi, Orbassano, Italy; CRESM Biobank, University Hospital San Luigi Gonzaga, Orbassano, Italy; Department of Neurology and CRESM, University Hospital San Luigi Gonzaga, Orbassano, Italy.
| | - Paola Valentino
- NICO - Neuroscience Institute Cavalieri Ottolenghi, Orbassano, Italy
| | - Simona Malucchi
- Department of Neurology and CRESM, University Hospital San Luigi Gonzaga, Orbassano, Italy
| | - Rugiada Bottero
- Department of Neurology and CRESM, University Hospital San Luigi Gonzaga, Orbassano, Italy
| | - Serena Martire
- CRESM Biobank, University Hospital San Luigi Gonzaga, Orbassano, Italy; Department of Neuroscience "Rita Levi Montalcini", University of Turin, Italy
| | - Alessia Di Sapio
- CRESM Biobank, University Hospital San Luigi Gonzaga, Orbassano, Italy; Department of Neurology and CRESM, University Hospital San Luigi Gonzaga, Orbassano, Italy
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Ashrafzadeh-Kian S, Figdore D, Larson B, Deters R, Abou-Diwan C, Bornhorst J, Algeciras-Schimnich A. Head-to-head comparison of four plasma neurofilament light chain (NfL) immunoassays. Clin Chim Acta 2024; 561:119817. [PMID: 38879065 DOI: 10.1016/j.cca.2024.119817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 06/12/2024] [Accepted: 06/12/2024] [Indexed: 06/18/2024]
Abstract
BACKGROUND Neurofilament Light Chain (NfL) is an emerging blood biomarker of neuro-axonal injury and neurodegeneration with the potential to be used in the clinical management of various neurological conditions. Various NfL immunoassays are in development on high-throughput automated systems, but little information is available related to the comparability between assays. In this study, we performed a head-to-head comparison of four NfL immunoassays using plasma samples from individuals with various neurological conditions. METHODS EDTA plasma samples in which NfL was ordered clinically were stratified according to diagnosis. NfL concentrations (pg/mL) in plasma were obtained using the Quanterix Simoa®, the Roche Elecsys, the Siemens Healthineers Atellica®IM, and the Fujirebio Lumipulse® NfL assays. Passing-Bablok regression analyses were performed to assess the correlation and bias between methods. Additionally, the distribution of NfL concentrations for each assay was assessed in three disease groups: amyotrophic lateral sclerosis (ALS) upon initial diagnosis, ALS treated, and multiple sclerosis (MS). RESULTS The R2 between assays were all ≥ 0.95, however, significant proportional bias was observed between some assays. In particular, the Roche Elecsys assay NfL concentrations were significantly lower (∼85 %) when compared against the other three assays. The four assays were comparable with regards to the percentage of patients that were identified as having an elevated NfL result in the various clinical groups: ALS initial diagnoses (83-94 %), ALS untreated (93-100 %), and MS (8-18 %). CONCLUSIONS This is the first study describing a head-to-head comparison of four automated NfL immunoassays. We demonstrate that there is a strong correlation between assays but a lack of standardization which is evident by the bias observed between some of the evaluated methods. These analytical differences will be important to consider when using NfL as a biomarker of neurodegeneration.
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Affiliation(s)
| | - Daniel Figdore
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Bethany Larson
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Rebecca Deters
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | | | - Joshua Bornhorst
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
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Jacobsen AB, Bostock H, Howells J, Cengiz B, Samusyte G, Koltzenburg M, Pia H, Fuglsang‐Frederiksen A, Blicher J, Obál I, Andersen H, Tankisi H. Threshold tracking transcranial magnetic stimulation and neurofilament light chain as diagnostic aids in ALS. Ann Clin Transl Neurol 2024; 11:1887-1896. [PMID: 38894662 PMCID: PMC11251469 DOI: 10.1002/acn3.52095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 04/21/2024] [Accepted: 05/04/2024] [Indexed: 06/21/2024] Open
Abstract
OBJECTIVE There is a need for sensitive biomarkers in amyotrophic lateral sclerosis (ALS), to enable earlier diagnosis and to help assess potential treatments. The main objective of this study was to compare two potential biomarkers, threshold-tracking short-interval cortical inhibition (T-SICI), which has shown promise as a diagnostic aid, and neurofilament light chains (NfL). METHODS Ninety-seven patients with ALS (mean age 67.1 ± 11.5 years) and 53 ALS mimics (aged 62.4 ± 12.9) were included. Mean disease duration was 14 months ±14.1. Patients were evaluated with revised ALS functional rating score (ALSFRS-R), Penn upper motor neuron score (UMNS), muscle strength using the Medical Research Council (MRC) score and examined with T-SICI, quantitative electromyography (EMG), and NfL measured in spinal fluid. RESULTS NfL increased with increasing UMNS (rho = 0.45, p = 8.2 × 10-6) whereas T-SICI at 2.5 ms paradoxically increased toward normal values (rho = 0.53, p = 1.9 × 10-7). However, these two measures were uncorrelated. Discrimination between ALS patients and mimics was best for NfL (area under ROC curve 0.842, sensitivity 84.9%, specificity 83.5%), compared with T-SICI (0.675, 39.6%, 91.8%). For the patients with no UMN signs, NfL also discriminated best (0.884, 89.3%, 82.6%), compared with T-SICI (0.811, 71.4%, 82.6%). However, when combining NfL and T-SICI, higher AUCs of 0.854 and 0.922 and specificities of 93.8 and 100 were found when considering all patients and patients with no UMN signs, respectively. INTERPRETATION Both T-SICI and NfL correlated with UMN involvement and combined, they provided a strong discrimination between ALS patients and ALS mimics.
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Affiliation(s)
- Anna B. Jacobsen
- Department of Clinical NeurophysiologyAarhus University HospitalAarhus N8200Denmark
| | - Hugh Bostock
- UCL Queen SquareInstitute of NeurologyQueen SquareLondonWC1N 3BGUK
| | - James Howells
- Central Clinical School, Faculty of Medicine and HealthUniversity of SydneySydneyNSW2006Australia
| | - Bülent Cengiz
- Department of NeurologyGazi University Faculty of MedicineBeşevler06570AnkaraTurkey
| | - Gintaute Samusyte
- Department of Neurology, Medical AcademyLithuanian University of Health SciencesKaunas44307Lithuania
- Department of NeurologyLithuanian University of Health Sciences Hospital Kauno KlinikosKaunas50161Lithuania
| | - Martin Koltzenburg
- UCL Queen SquareInstitute of NeurologyQueen SquareLondonWC1N 3BGUK
- Department of Clinical NeurophysiologyNational Hospital for Neurology and NeurosurgeryQueen SquareLondonWC1N 3BGUK
| | - Hossein Pia
- Department of Clinical NeurophysiologyAarhus University HospitalAarhus N8200Denmark
| | | | - Jakob Blicher
- Department of NeurologyAalborg University HospitalAalborg9000Denmark
| | - Izabella Obál
- Department of NeurologyAalborg University HospitalAalborg9000Denmark
| | - Henning Andersen
- Department of NeurologyAarhus University HospitalAarhus N8200Denmark
| | - Hatice Tankisi
- Department of Clinical NeurophysiologyAarhus University HospitalAarhus N8200Denmark
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Kaaber IA, Lesbo M, Wichmann TO, Olsen DA, Rasmussen MM, Brink O, Borris LC, Hviid CVB. Admission levels of serum biomarkers have additive and cumulative prognostic value in traumatic brain injury. Sci Rep 2024; 14:14139. [PMID: 38898030 PMCID: PMC11187066 DOI: 10.1038/s41598-024-64125-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 06/05/2024] [Indexed: 06/21/2024] Open
Abstract
Elevated levels of CNS-derived serum proteins are associated with poor outcome in traumatic brain injury (TBI), but the value of adding acute serum biomarker levels to common clinical outcome predictors lacks evaluation. We analyzed admission serum samples for Total-Tau (T-Tau), Neurofilament light chain (Nfl), Glial fibrillary acidic protein (GFAP), and Ubiquitin C-terminal hydrolase L1 (UCHL1) in a cohort of 396 trauma patients including 240 patients with TBI. We assessed the independent association of biomarkers with 1-year mortality and 6-12 months Glasgow Outcome Scale Extended (GOSE) score, as well as the additive and cumulative value of biomarkers on Glasgow Coma Scale (GCS) and Marshall Score for outcome prediction. Nfl and T-Tau levels were independently associated with outcome (OR: Nfl = 1.65, p = 0.01; T-Tau = 1.99, p < 0.01). Nfl or T-Tau improved outcome prediction by GCS (Wald Chi, Nfl = 6.8-8.8, p < 0.01; T-Tau 7.2-11.3, p < 0.01) and the Marshall score (Wald Chi, Nfl = 16.2-17.5, p < 0.01; T-Tau 8.7-12.4, p < 0.01). Adding T-Tau atop Nfl further improved outcome prediction in majority of tested models (Wald Chi range 3.8-9.4, p ≤ 0.05). Our data suggest that acute levels of serum biomarkers are independently associated with outcome after TBI and add outcome predictive value to commonly used clinical scores.
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Affiliation(s)
- Ida A Kaaber
- Department of Clinical Biochemistry, Aarhus University Hospital, 8200, Aarhus, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Maj Lesbo
- Department of Ortopedic Surgery, Viborg Regional Hospital, Viborg, Denmark
| | - Thea O Wichmann
- Department of Neurosurgery, Aarhus University Hospital, Aarhus, Denmark
| | - Dorte Aa Olsen
- Department of Biochemistry and Immunology, Lillebaelt Hospital, University Hospital of Southern Denmark, Vejle, Denmark
| | - Mikkel M Rasmussen
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Department of Neurosurgery, Aarhus University Hospital, Aarhus, Denmark
| | - Ole Brink
- Department of Ortopedic Surgery, Aarhus University Hospital, Aarhus, Denmark
| | - Lars C Borris
- Department of Ortopedic Surgery, Aarhus University Hospital, Aarhus, Denmark
| | - Claus V B Hviid
- Department of Clinical Biochemistry, Aarhus University Hospital, 8200, Aarhus, Denmark.
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark.
- Department of Clinical Biochemistry, Aalborg University Hospital, Aalborg, Denmark.
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Novak F, Bajwa HM, Østergaard K, Berg JM, Madsen JS, Olsen DA, Urbonaviciute I, Illes Z, Stilund ML, Romme Christensen J, Bramow S, Sellebjerg F, Sejbaek T. Extended interval dosing with ocrelizumab in multiple sclerosis. Mult Scler 2024; 30:847-856. [PMID: 38646949 DOI: 10.1177/13524585241245296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
BACKGROUND This study investigates clinical and biomarker differences between standard interval dosing (SID) and extended interval dosing (EID) of ocrelizumab therapy in multiple sclerosis (MS). METHODS This is a prospective, double-arm, open-label, multi-center study in Denmark. Participants diagnosed with MS on ocrelizumab therapy >12 months were included (n = 184). Clinical, radiological, and blood-based biomarker outcomes were evaluated. MRI disease activity, relapses, worsening of neurostatus, and No Evidence of Disease Activity-3 (NEDA-3) were used as a combined endpoint. RESULTS Out of 184 participants, 107 participants received EID (58.2%), whereas 77 participants received SID (41.8%). The average extension was 9 weeks with a maximum of 78 weeks. When comparing EID to SID, we found higher levels of B-cells, lower serum concentrations of ocrelizumab, and similar levels of age-adjusted NFL and GFAP in the two groups. No difference in NEDA-3 between EID and SID was demonstrated (hazard ratio: 1.174, p = 0.69). Higher levels of NFL were identified in participants with disease activity. Body mass index correlated with levels of ocrelizumab and B-cells. CONCLUSION Extending one treatment interval of ocrelizumab on average 9 weeks and up to 78 weeks did not result in clinical, radiological, or biomarker evidence of worsening compared with SID.
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Affiliation(s)
- Frederik Novak
- Department of Neurology, Esbjerg Hospital, University Hospital of Southern Denmark, Esbjerg, Denmark
- Department of Regional Health Research, University of Southern Denmark, Odense, Denmark
| | - Hamza Mahmood Bajwa
- Department of Neurology, Esbjerg Hospital, University Hospital of Southern Denmark, Esbjerg, Denmark
- Department of Regional Health Research, University of Southern Denmark, Odense, Denmark
| | | | | | - Jonna Skov Madsen
- Department of Regional Health Research, University of Southern Denmark, Odense, Denmark
- Department of Biochemistry and Immunology, Lillebaelt Hospital, University Hospital of Southern Denmark, Vejle, Denmark
| | - Dorte Aalund Olsen
- Department of Biochemistry and Immunology, Lillebaelt, University Hospital of Southern Denmark, Vejle, Denmark
| | | | - Zsolt Illes
- Department of Neurology, Odense University Hospital, Odense, Denmark
| | - Morten Leif Stilund
- Department of Neurology Aarhus University Hospital, Aarhus, Denmark
- Department of Neurology, Physiotherapy and Occupational Therapy, Gødstrup Hospital, Herning, Denmark
- NIDO, Centre for Research and Education, Gødstrup Hospital, Herning, Denmark
| | - Jeppe Romme Christensen
- Danish Multiple Sclerosis Center, Copenhagen University Hospital-Rigshospitalet, Glostrup, Copenhagen, Denmark
| | - Stephan Bramow
- Danish Multiple Sclerosis Center, Copenhagen University Hospital-Rigshospitalet, Glostrup, Copenhagen, Denmark
| | - Finn Sellebjerg
- Danish Multiple Sclerosis Center, Copenhagen University Hospital-Rigshospitalet, Glostrup, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Science, University of Copenhagen, Copenhagen, Denmark
| | - Tobias Sejbaek
- Department of Neurology, Esbjerg Hospital, University Hospital of Southern Denmark, Esbjerg, Denmark
- Department of Regional Health Research, University of Southern Denmark, Odense, Denmark
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8
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Määttä LL, Andersen ST, Parkner T, Hviid CVB, Bjerg L, Kural MA, Charles M, Søndergaard E, Kuhle J, Tankisi H, Witte DR, Jensen TS. Longitudinal Change in Serum Neurofilament Light Chain in Type 2 Diabetes and Early Diabetic Polyneuropathy: ADDITION-Denmark. Diabetes Care 2024; 47:986-994. [PMID: 38502878 DOI: 10.2337/dc23-2208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 02/22/2024] [Indexed: 03/21/2024]
Abstract
OBJECTIVE To investigate the longitudinal development of neurofilament light chain (NfL) levels in type 2 diabetes with and without diabetic polyneuropathy (+/-DPN) and to explore the predictive potential of NfL as a biomarker for DPN. RESEARCH DESIGN AND METHODS We performed retrospective longitudinal case-control analysis of data from 178 participants of the Anglo-Danish-Dutch Study of Intensive Treatment in People with Screen-Detected Diabetes in Primary Care-Denmark (ADDITION-Denmark) cohort of people with screen-detected type 2 diabetes. Biobank samples acquired at the ADDITION-Denmark 5- and 10-year follow-ups were analyzed for serum NfL (s-NfL) using single-molecule array, and the results were compared with established reference material to obtain NfL z-scores. DPN was diagnosed according to Toronto criteria for confirmed DPN at the 10-year follow-up. RESULTS s-NfL increased over time in +DPN (N = 39) and -DPN participants (N = 139) at levels above normal age-induced s-NfL increase. Longitudinal s-NfL change was greater in +DPN than in -DPN participants (17.4% [95% CI 4.3; 32.2] or 0.31 SD [95% CI 0.03; 0.60] higher s-NfL or NfL z-score increase in +DPN compared with -DPN). s-NfL at the 5-year follow-up was positively associated with nerve conduction studies at the 10-year follow-up (P = 0.02 to <0.001), but not with DPN risk. Areas under the curve (AUCs) for s-NfL were not inferior to AUCs for the Michigan Neuropathy Screening Instrument questionnaire score or vibration detection thresholds. Higher yearly s-NfL increase was associated with higher DPN risk (odds ratio 1.36 [95% CI 1.08; 1.71] per 1 ng/L/year). CONCLUSIONS Our findings suggest that preceding s-NfL trajectories differ slightly between those with and without DPN and imply a possible biomarker value of s-NfL trajectories in DPN.
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Affiliation(s)
- Laura L Määttä
- Danish Pain Research Center, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus, Denmark
| | - Signe T Andersen
- Danish Pain Research Center, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus, Denmark
| | - Tina Parkner
- Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark
| | - Claus V B Hviid
- Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Biochemistry, Aalborg University Hospital, Aalborg, Denmark
| | - Lasse Bjerg
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus, Denmark
- Department of Public Health, Aarhus University, Aarhus, Denmark
| | - Mustafa A Kural
- Department of Clinical Neurophysiology, Aarhus University Hospital, Aarhus, Denmark
| | - Morten Charles
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus, Denmark
- Department of Public Health, Aarhus University, Aarhus, Denmark
| | - Esben Søndergaard
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus, Denmark
| | - Jens Kuhle
- Department of Neurology, University of Basel, Basel, Switzerland
- Multiple Sclerosis Center and Research Center for Clinical Neuroimmunology and Neuroscience Basel, University Hospital Basel, Basel, Switzerland
| | - Hatice Tankisi
- Department of Clinical Neurophysiology, Aarhus University Hospital, Aarhus, Denmark
| | - Daniel R Witte
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus, Denmark
- Department of Public Health, Aarhus University, Aarhus, Denmark
| | - Troels S Jensen
- Danish Pain Research Center, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
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9
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Eggertsen PP, Palmfeldt J, Pedersen AR, Frederiksen OV, Olsen RKJ, Nielsen JF. Serum neurofilament light chain, inflammatory markers, and kynurenine metabolites in patients with persistent post-concussion symptoms: A cohort study. J Neurol Sci 2024; 460:123016. [PMID: 38636323 DOI: 10.1016/j.jns.2024.123016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 02/29/2024] [Accepted: 04/10/2024] [Indexed: 04/20/2024]
Abstract
BACKGROUND Concussion leads to persistent post-concussion symptoms (PPCS) in up to one-third of those affected. While previous research has linked the initial trauma to elevated serum levels of neurofilament light chain (NFL), inflammatory markers, and neurotoxic metabolites within the kynurenine pathway, few studies have explored their relevance in PPCS. This study aims to investigate these biomarkers in PPCS patients, elucidating their relevance in the prolonged phase of concussion. METHODS Serum samples from 86 PPCS individuals aged 18-30 years, 2-6 months post-trauma were analyzed, with 54 providing follow-up samples after seven months. NFL was measured using single-molecule array (Simoa) technology, 13 inflammatory markers via a Luminex immunoassay, and five kynurenine metabolites using liquid chromatography-mass spectrometry. A control group of 120 healthy anonymous blood donors was recruited for comparison. RESULTS No significant NFL differences were found in PPCS participants compared with healthy individuals (p = 0.22). Intriguingly, a subset (9.3%) of PPCS participants initially exhibited abnormally high NFL levels (>9.7 pg/mL), which normalized upon follow-up (p = 0.032). Additionally, serum levels of the inflammatory markers, monocyte chemoattractant protein-1 (MCP-1/CCL2), and eotaxin-1/CCL11 were 25-40% lower than in healthy individuals (p ≤ 0.001). As hypothesized, PPCS participants exhibited a 22% reduction in the ratio of kynurenic acid to quinolinic acid (neuroprotective index) (p < 0.0001), indicating a shift towards the formation of neurotoxic metabolites. CONCLUSION NFL may serve as a biomarker to monitor recovery, and future studies should investigate the potential therapeutic benefits of modulating the kynurenine pathway to improve PPCS.
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Affiliation(s)
- Peter Preben Eggertsen
- Hammel Neurorehabilitation Centre and University Research Clinic, Department of Clinical Medicine, Aarhus University, Voldbyvej 15A, Hammel 8450, Denmark; Research Unit for Molecular Medicine, Department of Clinical Medicine, Aarhus University Hospital and Aarhus University, Palle Juul-Jensens Boulevard 99, Aarhus N 8200, Denmark.
| | - Johan Palmfeldt
- Research Unit for Molecular Medicine, Department of Clinical Medicine, Aarhus University Hospital and Aarhus University, Palle Juul-Jensens Boulevard 99, Aarhus N 8200, Denmark
| | - Asger Roer Pedersen
- University Research Clinic for Innovative Patient Pathways, Diagnostic Centre, Silkeborg Regional Hospital, Falkevej 1, Silkeborg 8600, Denmark
| | | | - Rikke Katrine Jentoft Olsen
- Research Unit for Molecular Medicine, Department of Clinical Medicine, Aarhus University Hospital and Aarhus University, Palle Juul-Jensens Boulevard 99, Aarhus N 8200, Denmark
| | - Jørgen Feldbæk Nielsen
- Hammel Neurorehabilitation Centre and University Research Clinic, Department of Clinical Medicine, Aarhus University, Voldbyvej 15A, Hammel 8450, Denmark
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10
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Pernice HF, Knorz AL, Wetzel PJ, Herrmann C, Muratovic H, Rieber F, Asaad E, Fiß G, Barzen G, Blüthner E, Knebel F, Spethmann S, Messroghli D, Heidecker B, Brand A, Wetz C, Tschöpe C, Hahn K. Neurological affection and serum neurofilament light chain in wild type transthyretin amyloidosis. Sci Rep 2024; 14:10111. [PMID: 38698025 PMCID: PMC11066119 DOI: 10.1038/s41598-024-60025-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 04/17/2024] [Indexed: 05/05/2024] Open
Abstract
In contrast to inherited transthyretin amyloidosis (A-ATTRv), neuropathy is not a classic leading symptom of wild type transthyretin amyloidosis (A-ATTRwt). However, neurological symptoms are increasingly relevant in A-ATTRwt as well. To better understand the role of neurological symptoms in A-ATTRwt, A-ATTRwt patients were prospectively characterized at Amyloidosis Center Charité Berlin (ACCB) between 2018 and 2023 using detailed neurological examination, quality of life questionnaires, and analysis of age- and BMI-adapted serum neurofilament light chain (NFL) levels. 16 out of 73 (21.9%) patients presented with a severe neuropathy which we defined by a Neuropathy Impairment Score (NIS) of 20 or more. In this group, quality of life was reduced, peripheral neuropathy was more severe, and spinal stenosis and joint replacements were frequent. Age- and BMI matched serum NFL levels were markedly elevated in patients with a NIS ≥ 20. We therefore conclude that highly abnormal values in neuropathy scores such as the NIS occur in A-ATTRwt, and have an important impact on quality of life. Both peripheral neuropathy and spinal canal stenosis are likely contributors. Serum NFL may serve as a biomarker for neurological affection in patients with A-ATTRwt. It will be important to consider neurological aspects of A-ATTRwt for diagnosis, clinical follow-up, and future treatment development.
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Affiliation(s)
- Helena F Pernice
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Neurology and Experimental Neurology, Charitéplatz 1, 10117, Berlin, Germany
- Berlin Institute of Health at Charité (BIH)-Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - Adrian L Knorz
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Neurology and Experimental Neurology, Charitéplatz 1, 10117, Berlin, Germany
| | - Paul J Wetzel
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Neurology and Experimental Neurology, Charitéplatz 1, 10117, Berlin, Germany
| | - Carolin Herrmann
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Biometry and Clinical Epidemiology, Charitéplatz 1, 10117, Berlin, Germany
| | - Harisa Muratovic
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Neurology and Experimental Neurology, Charitéplatz 1, 10117, Berlin, Germany
| | - Finn Rieber
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
| | - Eleonora Asaad
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Neurology and Experimental Neurology, Charitéplatz 1, 10117, Berlin, Germany
| | - Gunnar Fiß
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Neurology and Experimental Neurology, Charitéplatz 1, 10117, Berlin, Germany
| | - Gina Barzen
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany
- Deutsches Herzzentrum der Charité, Department of Cardiology, Angiology and Intensive Care Medicine, Charitéplatz 1, 10117, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Elisabeth Blüthner
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Medical Clinic m.S. Hepatology and Gastroenterology CCM/CVK, Berlin, Germany
| | - Fabian Knebel
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Deutsches Herzzentrum der Charité, Department of Cardiology, Angiology and Intensive Care Medicine, Charitéplatz 1, 10117, Berlin, Germany
- Klinik für Innere Medizin mit Schwerpunkt Kardiologie, Sana Klinikum Lichtenberg, Berlin, Germany
| | - Sebastian Spethmann
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany
- Deutsches Herzzentrum der Charité, Department of Cardiology, Angiology and Intensive Care Medicine, Charitéplatz 1, 10117, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Daniel Messroghli
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
- Deutsches Herzzentrum der Charité, Department of Cardiology, Angiology and Intensive Care Medicine, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Bettina Heidecker
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
- Deutsches Herzzentrum der Charité, Department of Cardiology, Angiology and Intensive Care Medicine, Hindenburgdamm 30, 12203, Berlin, Germany
- Berlin Institute of Health at Charité (BIH)-Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - Anna Brand
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany
- Deutsches Herzzentrum der Charité, Department of Cardiology, Angiology and Intensive Care Medicine, Charitéplatz 1, 10117, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Christoph Wetz
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Nuclear Medicine, Hindenburgdamm 30, 12203, Berlin, Germany
| | - Carsten Tschöpe
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
- Deutsches Herzzentrum der Charité, Department of Cardiology, Angiology and Intensive Care Medicine, Augustenburger Platz 1, 13353, Berlin, Germany
- Berlin Institute of Health at Charité (BIH)-Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - Katrin Hahn
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany.
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Neurology and Experimental Neurology, Charitéplatz 1, 10117, Berlin, Germany.
- Berlin Institute of Health at Charité (BIH)-Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.
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11
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Gentile JE, Heiss C, Corridon TL, Mortberg MA, Fruhwürth S, Guzman K, Grötschel L, Chan K, Herring NC, Janicki T, Nhass R, Sarathy JM, Erickson B, Kunz R, Erickson A, Braun C, Henry KT, Bry L, Arnold SE, Minikel EV, Zetterberg H, Vallabh SM. Evidence that minocycline treatment confounds the interpretation of neurofilament as a biomarker. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.05.01.24306384. [PMID: 38746398 PMCID: PMC11092701 DOI: 10.1101/2024.05.01.24306384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Neurofilament light (NfL) concentration in cerebrospinal fluid (CSF) and blood serves as an important biomarker in neurology drug development. Changes in NfL are generally assumed to reflect changes in neuronal damage, while little is known about the clearance of NfL from biofluids. We observed an NfL increase of 3.5-fold in plasma and 5.7-fold in CSF in an asymptomatic individual at risk for genetic prion disease following 6 weeks' treatment with oral minocycline for a dermatologic indication. Other biomarkers remained normal, and proteomic analysis of CSF revealed that the spike was exquisitely specific to neurofilaments. NfL dropped nearly to normal levels 5 weeks after minocycline cessation, and the individual remained free of disease 2 years later. Plasma NfL in dermatology patients was not elevated above normal controls. Dramatically high plasma NfL (>500 pg/mL) was variably observed in some hospitalized individuals receiving minocycline. In mice, treatment with minocycline resulted in variable increases of 1.3- to 4.0-fold in plasma NfL, with complete washout 2 weeks after cessation. In neuron-microglia co-cultures, minocycline increased NfL concentration in conditioned media by 3.0-fold without any visually obvious impact on neuronal health. We hypothesize that minocycline does not cause or exacerbate neuronal damage, but instead impacts the clearance of NfL from biofluids, a potential confounder for interpretation of this biomarker.
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12
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Skarstein I, Ulvestad E, Solheim AM, Vedeler C, Ljøstad U, Mygland Å, Eikeland R, Reiso H, Lorentzen ÅR, Bos SD. Serum neurofilament light chain associates with symptom burden in Lyme neuroborreliosis patients: a longitudinal cohort study from Norway. J Neurol 2024; 271:2768-2775. [PMID: 38407594 PMCID: PMC11055709 DOI: 10.1007/s00415-024-12237-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 01/31/2024] [Accepted: 02/01/2024] [Indexed: 02/27/2024]
Abstract
OBJECTIVES Serum neurofilament light chain (sNfL), an indicator of neuronal damage, is increasingly recognized as a potential biomarker for disease activity in neurodegenerative disorders. In this study, we wanted to investigate sNfL as a prognostic marker in a large, well-defined population of 90 patients with Lyme neuroborreliosis (LNB). In addition, we sought to explore associations between symptoms and sNfL levels during the acute phase of LNB. MATERIALS AND METHODS Patients diagnosed with definite or possible LNB were recruited from a double-blinded, placebo-controlled, multi-center trial, in which the participants were randomly assigned to 2 or 6 weeks of oral doxycycline treatment. The sNfL levels were measured using a single molecule array assay at both diagnosis and 6-month follow-up, and analysed against clinical parameters, variations in symptom burden and long-term complaints as assessed by a composite clinical score. RESULTS At the time of diagnosis, approximately 60% of the patients had elevated sNfL levels adjusted for age. Notably, mean sNfL levels were significantly higher at diagnosis (52 pg/ml) compared to 6 months after treatment (12 pg/ml, p < 0.001), when sNfL levels had normalized in the majority of patients. Patients with objective signs of spinal radiculitis had significantly higher baseline sNfL levels compared to patients without spinal radiculitis (p = 0.033). CONCLUSION Our findings suggest that sNfL can serve as a biomarker for peripheral nerve tissue involvement in the acute phase of LNB. As found in an earlier study, we confirm normalization of sNfL levels in blood after treatment. We found no prognostic value of acute-phase sNfL levels on patient outcome.
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Affiliation(s)
- Ingerid Skarstein
- Department of Microbiology, Haukeland University Hospital, Post Box 1400, 5021, Bergen, Norway.
- Department of Clinical Science, University of Bergen, Bergen, Norway.
| | - Elling Ulvestad
- Department of Microbiology, Haukeland University Hospital, Post Box 1400, 5021, Bergen, Norway
- Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Anne Marit Solheim
- Department of Neurology, Sørlandet Hospital Trust, Kristiansand, Norway
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Christian Vedeler
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
- Department of Neurology, Haukeland University Hospital, Bergen, Norway
| | - Unn Ljøstad
- Department of Neurology, Sørlandet Hospital Trust, Kristiansand, Norway
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Åse Mygland
- Department of Neurology, Sørlandet Hospital Trust, Kristiansand, Norway
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
- Section of Habilitation, Sørlandet Hospital Trust, Kristiansand, Norway
| | - Randi Eikeland
- Norwegian National Advisory Unit on Tick-Borne Diseases, Sørlandet Hospital Trust, Kristiansand, Norway
- Faculty of Health and Sport Sciences, University of Agder, Grimstad, Norway
| | - Harald Reiso
- Norwegian National Advisory Unit on Tick-Borne Diseases, Sørlandet Hospital Trust, Kristiansand, Norway
| | - Åslaug Rudjord Lorentzen
- Department of Neurology, Sørlandet Hospital Trust, Kristiansand, Norway
- Norwegian National Advisory Unit on Tick-Borne Diseases, Sørlandet Hospital Trust, Kristiansand, Norway
| | - Steffan Daniel Bos
- Department of Microbiology, Haukeland University Hospital, Post Box 1400, 5021, Bergen, Norway
- Department of Neurology, Oslo University Hospital, Oslo, Norway
- Cancer Registry of Norway, The Norwegian Institute of Public Health, Oslo, Norway
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13
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Svart K, Korsbæk JJ, Jensen RH, Parkner T, Knudsen CS, Hasselbalch SG, Hagen SM, Wibroe EA, Molander LD, Beier D. Neurofilament light chain is elevated in patients with newly diagnosed idiopathic intracranial hypertension: A prospective study. Cephalalgia 2024; 44:3331024241248203. [PMID: 38690635 DOI: 10.1177/03331024241248203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
BACKGROUND Idiopathic intracranial hypertension is a secondary headache disorder potentially causing visual loss. Neurofilament light chain is a candidate, prognostic biomarker, but further studies of neuronal biomarkers are needed. Our objective was to investigate neurofilament light chain in cerebrospinal fluid (cNfL) and plasma (pNfL), amyloid-beta 42 (Aβ-42), total-tau and phosphorylated-tau in cerebrospinal fluid in new-onset idiopathic intracranial hypertension. METHODS Prospective case-control study including new-onset idiopathic intracranial hypertension and age, sex and BMI matched controls. Biomarkers were compared between patients and controls and related to papilledema, visual fields and opening pressure. RESULTS We included 37 patients and 35 controls. Patients had higher age-adjusted cNfL (1.4 vs. 0.6 pg/mL, p-adjusted < 0.001), pNfL (0.5 vs. 0.3 pg/mL, p-adjusted < 0.001) and total-tau/Aβ-42 (0.12 vs. 0.11, p-adjusted = 0.039). Significant, positive linear correlations were found between cNfL, pNfL, total-tau/Aβ-42 and opening pressure. Patients with severe papilledema had elevated cNfL compared to mild-moderate papilledema (median cNfL: 4.3 pg/mL (3.7) versus 1.0 pg/mL (1.4), p-adjusted = 0.009). cNFL was inversely associated with perimetric mean deviation (r = -0.47, p-adjusted < 0.001). CONCLUSIONS cNfL, pNfL and total-tau/Aβ-42 were elevated in new-onset idiopathic intracranial hypertension. cNfL was associated with severity of papilledema and visual field defects at diagnosis. This indicates early axonal damage. Neurofilament light chain is a candidate biomarker for disease severity.
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Affiliation(s)
- Katrine Svart
- Danish Headache Center, Department of Neurology, Rigshospitalet-Glostrup, Copenhagen, Denmark
| | - Johanne Juhl Korsbæk
- Danish Headache Center, Department of Neurology, Rigshospitalet-Glostrup, Copenhagen, Denmark
- University of Copenhagen, Copenhagen, Denmark
| | - Rigmor Højland Jensen
- Danish Headache Center, Department of Neurology, Rigshospitalet-Glostrup, Copenhagen, Denmark
| | - Tina Parkner
- Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, University of Aarhus, Århus, Denmark
| | - Cindy Søndersø Knudsen
- Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, University of Aarhus, Århus, Denmark
| | - Steen Gregers Hasselbalch
- University of Copenhagen, Copenhagen, Denmark
- Danish Dementia Research Center, Department of Neurology, Neuroscience Centre, Rigshospitalet, Copenhagen, Denmark
| | - Snorre Malm Hagen
- University of Copenhagen, Copenhagen, Denmark
- Department of Ophthalmology, Rigshospitalet-Glostrup, Copenhagen, Denmark
| | - Elisabeth Arnberg Wibroe
- University of Copenhagen, Copenhagen, Denmark
- Department of Ophthalmology, Rigshospitalet-Glostrup, Copenhagen, Denmark
| | | | - Dagmar Beier
- Department of Neurology, Odense University Hospital, Odense, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
- OPEN, Odense Patient data Explorative Network, Odense University Hospital, Odense, Denmark
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Boesl F, Goereci Y, Schweitzer F, Finke C, Schild AK, Bittner S, Steffen F, Schröder M, Quitschau A, Heine J, Warnke C, Franke C. Cognitive decline in post-COVID-19 syndrome does not correspond with persisting neuronal or astrocytic damage. Sci Rep 2024; 14:5326. [PMID: 38438479 PMCID: PMC10912552 DOI: 10.1038/s41598-024-55881-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 02/27/2024] [Indexed: 03/06/2024] Open
Abstract
Cognitive impairment is the most frequent symptom reported in post-COVID-19 syndrome (PCS). Aetiology of cognitive impairment in PCS is still to be determined. Neurofilament light chain (NfL) and glial fibrillary acidic protein (GFAP) are increased in acute COVID-19. Their role as biomarkers in other neurological disorders is under debate. We analysed serum levels of NfL and GFAP as markers for neuronal and astrocytic damage in 53 patients presenting to a PCS Neurology outpatient clinic. Only individuals with self-reported cognitive complaints were included. In these individuals, cognitive complaints were further assessed by comprehensive neuropsychological assessment (NPA). Patients were categorized into subgroups of subjective cognitive decline, single domain impairment, or multi-domain impairment. Serum NfL was in normal range, however an increase of serum GFAP was detected in 4% of patients. Serum NfL and GFAP levels correlated with each other, even when adjusting for patient age (r = 0.347, p = 0.012). NPA showed deficits in 70%; 40% showing impairment in several tested domains. No significant differences were found between serum NfL- and GFAP-levels comparing patients with subjective cognitive decline, single domain impairment, or multi-domain impairment. Persistent neuronal or astrocytic damage did not correlate with cognitive impairment in PCS.
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Affiliation(s)
- Fabian Boesl
- Department of Neurology, Charité-University Medicine Berlin, Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Hindenburgdamm 30, 12203, Berlin, Germany.
| | - Yasemin Goereci
- Department of Neurology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Finja Schweitzer
- Department of Neurology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Carsten Finke
- Department of Neurology, Charité-University Medicine Berlin, Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Hindenburgdamm 30, 12203, Berlin, Germany
| | - Ann-Katrin Schild
- Department of Psychiatry, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Stefan Bittner
- Department of Neurology, Focus Program Translational Neuroscience (FTN) and Immunotherapy (FZI), University Medical Center of the Johannes Gutenberg University Mainz, Rhine-Main Neuroscience Network (rmn2), Mainz, Germany
| | - Falk Steffen
- Department of Neurology, Focus Program Translational Neuroscience (FTN) and Immunotherapy (FZI), University Medical Center of the Johannes Gutenberg University Mainz, Rhine-Main Neuroscience Network (rmn2), Mainz, Germany
| | - Maria Schröder
- Department of Neurology, Charité-University Medicine Berlin, Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Hindenburgdamm 30, 12203, Berlin, Germany
| | - Anneke Quitschau
- Department of Neurology, Charité-University Medicine Berlin, Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Hindenburgdamm 30, 12203, Berlin, Germany
| | - Josephine Heine
- Department of Neurology, Charité-University Medicine Berlin, Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Hindenburgdamm 30, 12203, Berlin, Germany
| | - Clemens Warnke
- Department of Neurology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Christiana Franke
- Department of Neurology, Charité-University Medicine Berlin, Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Hindenburgdamm 30, 12203, Berlin, Germany
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15
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Vlasakova K, Tsuchiya T, Garfinkel IN, Ruth MP, Tyszkiewicz C, Detwiler TJ, Somps CJ, Di Cesare Mannelli L, Glaab WE. Performance of biomarkers NF-L, NSE, Tau and GFAP in blood and cerebrospinal fluid in rat for the detection of nervous system injury. Front Neurosci 2024; 17:1285359. [PMID: 38292901 PMCID: PMC10824906 DOI: 10.3389/fnins.2023.1285359] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 12/26/2023] [Indexed: 02/01/2024] Open
Abstract
Background Target organ toxicity is often a reason for attritions in nonclinical and clinical drug development. Leveraging emerging safety biomarkers in nonclinical studies provides an opportunity to monitor such toxicities early and efficiently, potentially translating to early clinical trials. As a part of the European Union's Innovative Medicines Initiative (IMI), two projects have focused on evaluating safety biomarkers of nervous system (NS) toxicity: Translational Safety Biomarker Pipeline (TransBioLine) and Neurotoxicity De-Risking in Preclinical Drug Discovery (NeuroDeRisk). Methods Performance of fluid-based NS injury biomarker candidates neurofilament light chain (NF-L), glial fibrillary acidic protein (GFAP), neuron specific enolase (NSE) and total Tau in plasma and cerebrospinal fluid (CSF) was evaluated in 15 rat in vivo studies. Model nervous system toxicants as well as other compounds were used to evaluate sensitivity and specificity. Histopathologic assessments of nervous tissues and behavioral observations were conducted to detect and characterize NS injuries. Receiver operator characteristic (ROC) curves were generated to compare the relative performance of the biomarkers in their ability to detect NS injury. Results NF-L was the best performer in detecting both peripheral nervous system (PNS) and CNS injury in plasma, (AUC of 0.97-0.99; respectively). In CSF, Tau correlated the best with CNS (AUC 0.97), but not PNS injury. NSE and GFAP were suitable for monitoring CNS injury, but with lesser sensitivity. In summary, NF-L is a sensitive and specific biomarker in rats for detecting compound-induced central and peripheral NS injuries. While NF-L measurement alone cannot inform the site of the injury, addition of biomarkers like Tau and NSE and analysis in both blood and CSF can provide additional information about the origin of the NS injury. Conclusion These results demonstrate the utility of emerging safety biomarkers of drug-induced NS injury in rats and provide additional supporting evidence for biomarker translation across species and potential use in clinical settings to monitor drug-induced NS injury in patients.
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Affiliation(s)
| | | | | | | | | | | | | | - Lorenzo Di Cesare Mannelli
- Department of Neuroscience, Psychology, Drug Research and Child Health, University of Florence, Florence, Italy
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16
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Jung Y, Damoiseaux JS. The potential of blood neurofilament light as a marker of neurodegeneration for Alzheimer's disease. Brain 2024; 147:12-25. [PMID: 37540027 DOI: 10.1093/brain/awad267] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 07/22/2023] [Accepted: 07/28/2023] [Indexed: 08/05/2023] Open
Abstract
Over the past several years, there has been a surge in blood biomarker studies examining the value of plasma or serum neurofilament light (NfL) as a biomarker of neurodegeneration for Alzheimer's disease. However, there have been limited efforts to combine existing findings to assess the utility of blood NfL as a biomarker of neurodegeneration for Alzheimer's disease. In addition, we still need better insight into the specific aspects of neurodegeneration that are reflected by the elevated plasma or serum concentration of NfL. In this review, we survey the literature on the cross-sectional and longitudinal relationships between blood-based NfL levels and other, neuroimaging-based, indices of neurodegeneration in individuals on the Alzheimer's continuum. Then, based on the biomarker classification established by the FDA-NIH Biomarker Working group, we determine the utility of blood-based NfL as a marker for monitoring the disease status (i.e. monitoring biomarker) and predicting the severity of neurodegeneration in older adults with and without cognitive decline (i.e. a prognostic or a risk/susceptibility biomarker). The current findings suggest that blood NfL exhibits great promise as a monitoring biomarker because an increased NfL level in plasma or serum appears to reflect the current severity of atrophy, hypometabolism and the decline of white matter integrity, particularly in the brain regions typically affected by Alzheimer's disease. Longitudinal evidence indicates that blood NfL can be useful not only as a prognostic biomarker for predicting the progression of neurodegeneration in patients with Alzheimer's disease but also as a susceptibility/risk biomarker predicting the likelihood of abnormal alterations in brain structure and function in cognitively unimpaired individuals with a higher risk of developing Alzheimer's disease (e.g. those with a higher amyloid-β). There are still limitations to current research, as discussed in this review. Nevertheless, the extant literature strongly suggests that blood NfL can serve as a valuable prognostic and susceptibility biomarker for Alzheimer's disease-related neurodegeneration in clinical settings, as well as in research settings.
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Affiliation(s)
- Youjin Jung
- Department of Psychology, Wayne State University, Detroit, MI 48202, USA
- Institute of Gerontology, Wayne State University, Detroit, MI 48202, USA
| | - Jessica S Damoiseaux
- Department of Psychology, Wayne State University, Detroit, MI 48202, USA
- Institute of Gerontology, Wayne State University, Detroit, MI 48202, USA
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17
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Paulsen AJ, Pinto AA, Schubert CR, Chappell RJ, Chen Y, Engelman CD, Ferrucci L, Hancock LM, Johnson SC, Merten N. Midlife sensory and motor functions improve prediction of blood-based measures of neurodegeneration and Alzheimer's disease in late middle-age. ALZHEIMER'S & DEMENTIA (AMSTERDAM, NETHERLANDS) 2024; 16:e12564. [PMID: 38476637 PMCID: PMC10927920 DOI: 10.1002/dad2.12564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 01/29/2024] [Accepted: 02/03/2024] [Indexed: 03/14/2024]
Abstract
INTRODUCTION We assessed whether midlife sensory and motor functions added to prediction models using the Cardiovascular Risk Factors, Aging, and Incidence of Dementia Score (CAIDE) and Framingham Risk Score (FRS) improve risk predictions of 10-year changes in biomarkers of neurodegeneration and Alzheimer's disease. METHODS Longitudinal data of N = 1529 (mean age 49years) Beaver Dam Offspring Study participants from baseline, 5-year, and 10-year follow-up were included. We tested whether including baseline sensory (hearing, vision, olfactory) impairment and motor function measures improves CAIDE or FRS risk predictions of 10-year incidence of biomarker positivity of serum-based neurofilament light chain (NfL) and amyloid beta (Aβ)42/Aβ40 using logistic regression. RESULTS Adding sensory and motor measures to CAIDE-only and FRS-only models significantly improved NfL and Aβ42/Aβ40 positivity predictions in adults above the age of 55. DISCUSSION Including midlife sensory and motor function improved long-term biomarker positivity predictions. Non-invasive sensory and motor assessments could contribute to cost-effective screening tools that identify individuals at risk for neurodegeneration early to target interventions and preventions. Highlights Sensory and motor measures improve risk prediction models of neurodegenerative biomarkersSensory and motor measures improve risk prediction models of AD biomarkersPrediction improvements were strongest in late midlife (adults >55 years of age)Sensory and motor assessments may help identify high-risk individuals early.
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Affiliation(s)
- Adam J. Paulsen
- Department of Population Health SciencesSchool of Medicine and Public HealthUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
| | - A. Alex Pinto
- Department of Biostatistics and Medical InformaticsSchool of Medicine and Public HealthUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
| | - Carla R. Schubert
- Department of Population Health SciencesSchool of Medicine and Public HealthUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
| | - Richard J. Chappell
- Department of Biostatistics and Medical InformaticsSchool of Medicine and Public HealthUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
- Department of StatisticsSchool of ComputerData & Information SciencesUniversity of Wisconsin ‐ MadisonMadisonWisconsinUSA
| | - Yanjun Chen
- Department of Ophthalmology and Visual SciencesSchool of Medicine and Public HealthUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
| | - Corinne D. Engelman
- Department of Population Health SciencesSchool of Medicine and Public HealthUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
| | - Luigi Ferrucci
- Longitudinal Study Section, Intramural Research ProgramNational Institute on Aging, NIHGaithersburgMarylandUSA
| | - Laura M. Hancock
- Neurological InstituteSection of NeuropsychologyCleveland ClinicClevelandOhioUSA
| | - Sterling C. Johnson
- Division of Geriatrics and GerontologyDepartment of MedicineSchool of Medicine and Public HealthUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
- Wisconsin Alzheimer's Disease Research CenterSchool of Medicine and Public HealthUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
| | - Natascha Merten
- Department of Population Health SciencesSchool of Medicine and Public HealthUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
- Division of Geriatrics and GerontologyDepartment of MedicineSchool of Medicine and Public HealthUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
- Wisconsin Alzheimer's Disease Research CenterSchool of Medicine and Public HealthUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
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18
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Beltran TA. Normative Values for Serum Neurofilament Light Chain in US Adults. J Clin Neurol 2024; 20:46-49. [PMID: 38179631 PMCID: PMC10782095 DOI: 10.3988/jcn.2022.0340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 04/14/2023] [Accepted: 04/27/2023] [Indexed: 01/06/2024] Open
Abstract
BACKGROUND AND PURPOSE Neurofilament light chain (NfL) levels serve as a marker of neuroaxonal injury and can be measured in both cerebrospinal fluid and serum. Although serum NfL (sNfL) levels have been shown to increase with the progression of various neurological conditions, normative values for healthy individuals have not yet been established. This study was undertaken to determine age-specific normative values for sNfL and evaluate the associations between sNfL and sociodemographic characteristics. METHODS A retrospective analysis was conducted using population-based data collected by the National Health and Nutrition Examination Survey between 2013 and 2014. The sera of 2071 adult participants were collected. General linear models were used to examine the associations between sNfL levels and sample characteristics. RESULTS The data analysis revealed a significant positive association between age and sNfL levels (p<0.001). Sex was also associated with sNfL levels (p=0.04) after controlling for age. The mean sNfL levels for males and females were 17.99 pg/mL (95% confidence interval [CI]=15.43-20.17) and 15.78 pg/mL (95% CI=13.00-18.55) respectively, after controlling for age. CONCLUSIONS These results suggest that sNfL levels increase with age and are affected by sex. The findings of this study provide a useful baseline for comparing sNfL levels in clinical practice and future research.
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Affiliation(s)
- Thomas A Beltran
- Department of Research, Womack Army Medical Center, Fort Liberty, NC, USA.
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19
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Huang KY, Wu CL, Chang YS, Huang WY, Su FC, Lin SW, Chien YY, Weng WC, Wei YC. Elevated plasma neurofilament light chain in immune-mediated neurological disorders (IMND) detected by immunomagnetic reduction (IMR). Brain Res 2023; 1821:148587. [PMID: 37739331 DOI: 10.1016/j.brainres.2023.148587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 09/10/2023] [Accepted: 09/17/2023] [Indexed: 09/24/2023]
Abstract
BACKGROUND In cases of immune-mediated neurological disorders (IMND), different syndromes are associated with antibodies against neuronal surface antigens, intra-neuronal antigens, astrocytic aquaporin, and gangliosides. These autoantibodies can be pathogenic or connected to neuroinflammation and resulting neuronal injuries. This study aims to identify a blood biomarker that can detect neuronal damage in individuals with IMND. To this end, we use immunomagnetic reduction (IMR) nanobead technology to measure plasma neurofilament light chain (NfL). METHODS The patients with IMND were enrolled in the Chang Gung Memorial Hospital at Keelung from 2018 to 2023. Seronegative patients were excluded based on the results of antibody tests. The healthy controls (HC) were community-dwelling adults from the Northeastern Taiwan Community Medicine Research Cohort (NTCMRC) conducted by the Community Medicine Research Center of the Keelung CGMH from 2020 to 2022. IMR technique detects magnetic susceptibility via measuring magnetic signal reduction caused by antigen-antibody immunocomplex formation on magnetic nanobeads. The plasma level of NfL was determined by the magnetic susceptibility changes in IMR. RESULTS The study enrolled 57 IMND patients from the hospital and 73 HC participants from the communities. The plasma NfL was significantly higher in the IMND than in the HC (11.022 ± 2.637 vs. 9.664 ± 2.610 pg/mL, p = 0.004), regardless of age effects on plasma NfL in an analysis of covariance (ANCOVA) (F = 0.720, p = 0.950). In the receiver of operation curve analysis, the area under curve for plasma NfL to discriminate IMND and HC was 0.664 (95% CI = 0.549 to 0.739, p = 0.005). The subgroup analysis of plasma NfL in the IMND patients showed no difference between peripheral immune-mediated neuropathy (IMN) and central immune-mediated encephalomyelitis (IMEM) (11.331 ± 2.895 vs. 10.627 ± 2.260 pg/mL, p = 0.322), nor between tumor and non-tumor IMND (10.784 ± 3.446 vs. 11.093 ± 2.391 pg/mL, p = 0.714). Additionally, the antibody class of ganglioside antibodies in IMN did not have an impact on plasma NfL level (p = 0.857). CONCLUSION Plasma NfL measurement is a reliable indicator of axonal injuries in patients with IMND. It is equally effective in detecting nerve injuries in inflammatory peripheral neuropathies and central neuroinflammation. The IMR nanobead technology offers a feasible method of detecting plasma NfL, which helps identify axonal injuries in IMND.
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Affiliation(s)
- Kuan-Yu Huang
- Department of Neurology, Chang Gung Memorial Hospital, Keelung 204, Taiwan
| | - Chia-Lun Wu
- Department of Neurology, Chang Gung Memorial Hospital, Keelung 204, Taiwan
| | - Yueh-Shih Chang
- Department of Hematology and Oncology, Chang Gung Memorial Hospital, Keelung 204, Taiwan; School of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Wen-Yi Huang
- Department of Neurology, Chang Gung Memorial Hospital, Keelung 204, Taiwan; School of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Feng-Chieh Su
- Department of Neurology, Chang Gung Memorial Hospital, Keelung 204, Taiwan
| | - Shun-Wen Lin
- Department of Neurology, Chang Gung Memorial Hospital, Keelung 204, Taiwan
| | - Yu-Yi Chien
- Department of Neurology, Chang Gung Memorial Hospital, Keelung 204, Taiwan
| | - Wei-Chieh Weng
- Department of Neurology, Chang Gung Memorial Hospital, Keelung 204, Taiwan; School of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Yi-Chia Wei
- Department of Neurology, Chang Gung Memorial Hospital, Keelung 204, Taiwan; School of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Community Medicine Research Center, Chang Gung Memorial Hospital, Keelung 204, Taiwan.
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20
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Novobilský R, Bartova P, Lichá K, Bar M, Stejskal D, Kusnierova P. Serum neurofilament light chain levels in patients with cognitive deficits and movement disorders: comparison of cerebrospinal and serum neurofilament light chain levels with other biomarkers. Front Hum Neurosci 2023; 17:1284416. [PMID: 38164192 PMCID: PMC10757912 DOI: 10.3389/fnhum.2023.1284416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 11/13/2023] [Indexed: 01/03/2024] Open
Abstract
Background Serum neurofilament light chain (S NfL) is a non-specific marker of neuronal damage, including Alzheimer's disease (AD). We aimed to verify the reference interval (RI) of serum NfL using a highly sensitive ELISA, and to estimate the optimal cut-off value for neuronal damage. Our second objective was to compare NfL in cerebrospinal fluid (CSF) and serum (S) with the routine neurodegeneration biomarkers used in AD, and to assess their concentrations relative to the degree of cognitive deficit. Methods Samples from 124 healthy volunteers were used to estimate the S NfL RI. For the comparison study, we used CSF and S samples from 112 patients with cognitive disorders. Cognitive functions were assessed using the mini-mental state examination. ELISA assays were used to determine the CSF and S NfL levels, CSF β-amyloid peptide42 (Aβ42), CSF β-amyloid peptide40 (Aβ40), CSF total tau protein (tTau), CSF phosphorylated tau protein (pTau), and CSF alpha-synuclein (αS). Results The estimated RI of S NfL were 2.25-9.19 ng.L-1. The cut-off value of S NfL for assessing the degree of neuronal impairment was 10.5 ng.L-1. We found a moderate statistically significant correlation between S NfL and CSF Aβ42 in the group with movement disorders, without dementia (rs = 0.631; p = 0.016); between S NfL and CSF Aβ40 in the group with movement disorder plus dementia (rs = -0.750; p = 0.052); between S NfL and CSF tTau in the control group (rs = 0.689; p = 0.009); and between S NfL and CSF pTau in the control group (rs = 0.749; p = 0.003). The non-parametric Kruskal-Wallis test revealed statistically significant differences between S NfL, CSF NfL, CSF Aβ42, CSF tTau, and CSF pTau and diagnosis within groups. The highest kappa coefficients were found between the concentrations of S NfL and CSF NfL (κ = 0.480) and between CSF NfL and CSF tTau (κ = 0.351). Conclusion Our results suggested that NfL and tTau in CSF of patients with cognitive decline could be replaced by the less-invasive determination of S NfL using a highly sensitive ELISA method. S NfL reflected the severity of cognitive deficits assessed by mini-mental state examination (MMSE). However, S NfL is not specific to AD and does not appear to be a suitable biomarker for early diagnosis of AD.
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Affiliation(s)
- Richard Novobilský
- Department of Neurology, University Hospital Ostrava, Ostrava, Czechia
- Department of Clinical Neurosciences, University of Ostrava, Ostrava, Czechia
| | - Petra Bartova
- Department of Neurology, University Hospital Ostrava, Ostrava, Czechia
- Department of Clinical Neurosciences, University of Ostrava, Ostrava, Czechia
| | - Karin Lichá
- Department of Clinical Biochemistry, Institute of Laboratory Medicine, University Hospital Ostrava, Ostrava, Czechia
| | - Michal Bar
- Department of Neurology, University Hospital Ostrava, Ostrava, Czechia
- Department of Clinical Neurosciences, University of Ostrava, Ostrava, Czechia
| | - David Stejskal
- Department of Clinical Biochemistry, Institute of Laboratory Medicine, University Hospital Ostrava, Ostrava, Czechia
- Institute of Laboratory Medicine, University of Ostrava, Ostrava, Czechia
| | - Pavlína Kusnierova
- Department of Clinical Biochemistry, Institute of Laboratory Medicine, University Hospital Ostrava, Ostrava, Czechia
- Institute of Laboratory Medicine, University of Ostrava, Ostrava, Czechia
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Klitholm M, Jeppesen AN, Christensen S, Parkner T, Tybirk L, Kirkegaard H, Sandfeld-Paulsen B, Grejs AM. Neurofilament Light Chain and Glial Fibrillary Acidic Protein as early prognostic biomarkers after out-of-hospital cardiac arrest. Resuscitation 2023; 193:109983. [PMID: 37778613 DOI: 10.1016/j.resuscitation.2023.109983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 09/02/2023] [Accepted: 09/23/2023] [Indexed: 10/03/2023]
Abstract
AIMS Neurofilament Light Chain (NfL) and Glial Fibrillary Acidic Protein (GFAP) are proteins released into the bloodstream upon hypoxic brain injury. We evaluated the biokinetics and examined the prognostic performance of serum NfL and GFAP in comatose out-of-hospital cardiac arrest (OHCA) patients. Furthermore, we compared the prognostic performance to that of serum Neuron Specific Enolase (NSE). METHODS This is a sub-study of the "Targeted temperature management for 48 vs 24 hours" (NCT01689077) trial. NfL and GFAP serum values from 82 patients were examined in blood samples collected at 24, 48 and 72 hours (h) after reaching target temperature of 33 ± 1 °C. This temperature was reached within a median of 281-320 minutes after intensive care unit admission. GFAP was analysed at 48 and 72 h. The neuroprognostic performance of NfL and GFAP was evaluated after 6 months follow-up. RESULTS NfL and GFAP values were significantly higher in patients with a poor outcome (Cerebral Performance Category (CPC) score 3-5) vs. good outcome (CPC 1-2). NfL 24 h: 1371.5 (462.0; 2125.1) vs. 24.8 (14.0; 61.6). GFAP 48 h: 1285.3 (843.9; 2236.7) vs. 361.2 (200.4; 665.6) (both p < 0.001). Both biomarkers were promising markers of poor functional outcome at 24 and 48 h respectively: NfL 24 h: AUROC 0.95 (95% CI: 0.91-1.00). GFAP 48 h: AUROC 0.88 (95% CI: 0.81-0.96). NfL and GFAP both predicted outcome better than NSE at 48 h (both p < 0.01). At 72 h NfL but not GFAP outperformed NSE (p = 0.01). CONCLUSION Serum NfL and GFAP may be strong biomarkers of poor functional outcome after OHCA from an early timepoint.
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Affiliation(s)
- Maibritt Klitholm
- Department of Intensive Care Medicine, Aarhus University Hospital, Denmark.
| | - Anni Nørgaard Jeppesen
- Department of Cardiothoracic and Vascular Surgery, Anaesthesia Section, Aarhus University Hospital, Denmark; Department of Clinical Medicine, Aarhus University, Denmark
| | - Steffen Christensen
- Department of Intensive Care Medicine, Aarhus University Hospital, Denmark; Department of Clinical Medicine, Aarhus University, Denmark
| | - Tina Parkner
- Department of Clinical Medicine, Aarhus University, Denmark; Department of Clinical Biochemistry, Aarhus University Hospital, Denmark
| | - Lea Tybirk
- Department of Clinical Biochemistry, Aarhus University Hospital, Denmark
| | - Hans Kirkegaard
- Department of Clinical Medicine, Aarhus University, Denmark; Research Centre for Emergency Medicine, Aarhus University, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
| | - Birgitte Sandfeld-Paulsen
- Department of Clinical Medicine, Aarhus University, Denmark; Department of Clinical Biochemistry, Viborg Regional Hospital, Heibergs Alle 4, 8800 Viborg, Denmark
| | - Anders Morten Grejs
- Department of Intensive Care Medicine, Aarhus University Hospital, Denmark; Department of Clinical Medicine, Aarhus University, Denmark
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22
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Määttä LL, Andersen ST, Parkner T, Hviid CVB, Bjerg L, Kural MA, Charles M, Søndergaard E, Sandbæk A, Tankisi H, Witte DR, Jensen TS. Serum neurofilament light chain - A potential biomarker for polyneuropathy in type 2 diabetes? Diabetes Res Clin Pract 2023; 205:110988. [PMID: 38349953 DOI: 10.1016/j.diabres.2023.110988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 10/23/2023] [Accepted: 10/27/2023] [Indexed: 02/15/2024]
Abstract
AIMS To investigate the relationship between neurofilament light chain (NfL) and the presence and severity of diabetic polyneuropathy (DPN). METHODS We performed cross-sectional analysis of data from 178 participants of the ADDITION-Denmark cohort of people with screen-detected type 2 diabetes and 32 healthy controls. Biobank serum samples were analyzed for NfL using single-molecule array. DPN was defined by Toronto criteria for confirmed DPN. Original and axonal nerve conduction study (NCS) sum z-scores were used as indicators of the severity of DPN and peripheral nerve damage. RESULTS 39 (21.9%) participants had DPN. Serum NfL (s-NfL) was significantly higher in participants with DPN (18.8 ng/L [IQR 14.4; 27.9]) than in participants without DPN (15.4 ng/L [IQR 11.7; 20.1]). There were no unadjusted s-NfL differences between controls (17.6 ng/L [IQR 12.7; 19.8]) and participants with or without DPN. Higher original and axonal NCS sum z-scores were associated with 10% higher s-NfL (10.2 and 12.1% [95% CI's 4.0; 16.8 and 6.6; 17.9] per 1 SD). The AUC of s-NfL for DPN was 0.63 (95% CI 0.52; 0.73). CONCLUSIONS S-NfL is unlikely to be a reliable biomarker for the presence of DPN. S-NfL is however associated tothe severity of the nerve damage underlying DPN.
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Affiliation(s)
- Laura L Määttä
- Danish Pain Research Center, Department of Clinical Medicine, Aarhus University, Palle Juul-Jensens Boulevard, 165, J109, 8200 Aarhus, Denmark; Steno Diabetes Center Aarhus, Aarhus University Hospital, Palle Juul-Jensens Boulevard, 11, 8200 Aarhus, Denmark.
| | - Signe T Andersen
- Danish Pain Research Center, Department of Clinical Medicine, Aarhus University, Palle Juul-Jensens Boulevard, 165, J109, 8200 Aarhus, Denmark; Steno Diabetes Center Aarhus, Aarhus University Hospital, Palle Juul-Jensens Boulevard, 11, 8200 Aarhus, Denmark.
| | - Tina Parkner
- Department of Clinical Biochemistry, Aarhus University Hospital, Palle Juul-Jensens Boulevard, 99, 8200 Aarhus, Denmark Aarhus, Denmark.
| | - Claus V B Hviid
- Department of Clinical Biochemistry, Aarhus University Hospital, Palle Juul-Jensens Boulevard, 99, 8200 Aarhus, Denmark Aarhus, Denmark; Department of Clinical Biochemistry, Aalborg University Hospital, Hobrovej 18-22, 9000 Aalborg, Denmark.
| | - Lasse Bjerg
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Palle Juul-Jensens Boulevard, 11, 8200 Aarhus, Denmark; Department of Public Health, Aarhus University, Batholins Allé 2, 8000 Aarhus, Denmark.
| | - Mustafa A Kural
- Department of Clinical Neurophysiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard, 165, J209, 8200 Aarhus, Denmark.
| | - Morten Charles
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Palle Juul-Jensens Boulevard, 11, 8200 Aarhus, Denmark; Department of Public Health, Aarhus University, Batholins Allé 2, 8000 Aarhus, Denmark.
| | - Esben Søndergaard
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Palle Juul-Jensens Boulevard, 11, 8200 Aarhus, Denmark.
| | - Annelli Sandbæk
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Palle Juul-Jensens Boulevard, 11, 8200 Aarhus, Denmark; Department of Public Health, Aarhus University, Batholins Allé 2, 8000 Aarhus, Denmark.
| | - Hatice Tankisi
- Department of Clinical Neurophysiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard, 165, J209, 8200 Aarhus, Denmark.
| | - Daniel R Witte
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Palle Juul-Jensens Boulevard, 11, 8200 Aarhus, Denmark; Department of Public Health, Aarhus University, Batholins Allé 2, 8000 Aarhus, Denmark.
| | - Troels S Jensen
- Danish Pain Research Center, Department of Clinical Medicine, Aarhus University, Palle Juul-Jensens Boulevard, 165, J109, 8200 Aarhus, Denmark.
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23
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Carobene A, Maiese K, Abou-Diwan C, Locatelli M, Serteser M, Coskun A, Unsal I. Biological variation estimates for serum neurofilament light chain in healthy subjects. Clin Chim Acta 2023; 551:117608. [PMID: 37844678 DOI: 10.1016/j.cca.2023.117608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/11/2023] [Accepted: 10/13/2023] [Indexed: 10/18/2023]
Abstract
OBJECTIVES Neurofilament light chain (NfL) is an emerging biomarker of neurodegeneration disorders. Knowledge of the biological variation (BV) can facilitate proper interpretation between serial measurements. Here BV estimates for serum NfL (sNfL) are provided. METHODS Serum samples were collected weekly from 24 apparently healthy subjects for 10 consecutive weeks and analyzed in duplicate using the Siemens Healthineers sNfL assay on the Atellica® IM Analyzer. Outlier detection, variance homogeneity analyses, and trend analysis were performed followed by CV-ANOVA to determine BV and analytical variation (CVA) estimates with 95%CI and the associated reference change values (RCV) and analytical performance specifications (APS). RESULTS Despite observed differences in sNfL concentrations between males and females, BV estimates remained consistent across genders. Both within-subject BV (CVI) for males (10.7%, 95%CI; 9.2-12.6) and females (9.1%, 95%CI; 7.8-10.9) and between-subject BV (CVG) for males (26.1%, 95%CI; 18.0-45.6) and females (30.2%, 95%CI; 20.9-53.5) were comparable. An index of individuality value of 0.33 highlights significant individuality, indicating the potential efficacy of personalized reference intervals in patient monitoring. CONCLUSIONS The established BV estimates for sNfL underscore its potential as a valuable biomarker for monitoring neurodegenerative diseases, offering a foundation for improved decision-making in clinical settings.
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Affiliation(s)
- Anna Carobene
- Laboratory Medicine, IRCCS San Raffaele Scientific Institute, Milan, Italy.
| | | | | | - Massimo Locatelli
- Laboratory Medicine, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Mustafa Serteser
- Acibadem Mehmet Ali Aydınlar University, School of Medicine, Atasehir, Istanbul, Turkey
| | - Abdurrahman Coskun
- Acibadem Mehmet Ali Aydınlar University, School of Medicine, Atasehir, Istanbul, Turkey
| | - Ibrahim Unsal
- Acibadem Mehmet Ali Aydınlar University, School of Medicine, Atasehir, Istanbul, Turkey
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24
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Seo G, Kim S, Byun JC, Kwon S, Lee YJ. Evaluation of the neurofilament light chain as a biomarker in children with spinal muscular atrophy treated with nusinersen. Brain Dev 2023; 45:554-563. [PMID: 37541812 DOI: 10.1016/j.braindev.2023.07.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 07/01/2023] [Accepted: 07/23/2023] [Indexed: 08/06/2023]
Abstract
BACKGROUND This study aimed to evaluate the neurofilament light chain (NfL) as a biomarker for treatment responses in children with a broad spectrum of spinal muscular atrophy (SMA) under nusinersen treatment. METHOD We measured NfL levels in serum (sNfL) and cerebrospinal fluid (cNfL) in nusinersen-treated patients with SMA and children without neurologic disorders. Correlations between cNfL and sNfL levels and motor function scores were analyzed. RESULTS sNfL and cNfL levels were measured in eight patients with SMA (SMA type 1, n = 3; SMA type 2, n = 5). sNfL levels were strongly correlated with cNfL levels regardless of the SMA subtype (r = 0.97, P < 0.001). Patients with SMA type 1 had higher baseline cNfL and sNfL levels before treatment initiation than those with SMA type 2 and neurologically healthy children. In patients with acute stage of SMA type 1 and 2, the NfL level rapidly decreased during the nusinersen treatment loading phase followed by stabilization at a lower plateau level. In contrast, in a patient with a chronic stage of SMA type 2, the NfL level remained within the normal range with no apparent downward trend. Motor function scores showed a tendency toward an inverse correlation with NfL levels in patients with acute stage although not in patients with chronic stage. CONCLUSIONS cNfL and sNfL levels can be promising biomarkers for monitoring treatment response in patients within their acute stage, particularly in SMA type 1, although not in patients with a chronic stage of SMA type 2.
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Affiliation(s)
- Gigyo Seo
- Department of Pediatrics, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, South Korea
| | - Saeyoon Kim
- Department of Pediatrics, School of Medicine, Yeungnam University, Daegu, South Korea
| | - Jun Chul Byun
- Department of Pediatrics, School of Medicine, Keimyung University, Daegu, South Korea
| | - Soonhak Kwon
- Department of Pediatrics, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, South Korea
| | - Yun Jeong Lee
- Department of Pediatrics, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, South Korea.
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25
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Johansson C, Aineskog H, Koskinen LOD, Gunnarsson A, Lindvall P. Serum neurofilament light as a predictor of outcome in subarachnoid haemorrhage. Acta Neurochir (Wien) 2023; 165:2793-2800. [PMID: 37351672 PMCID: PMC10542720 DOI: 10.1007/s00701-023-05673-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 06/07/2023] [Indexed: 06/24/2023]
Abstract
BACKGROUND Prognostication of clinical outcome in patients suffering from aneurysmal subarachnoid haemorrhage (SAH) is a challenge. There are no biochemical markers in routine use that can aid in prognostication. Neurofilament light (NFL) measured in cerebrospinal fluid (CSF) has been associated with clinical outcome in previous studies. OBJECTIVE To investigate if serum levels of NFL correlate with CSF levels and long-term clinical outcome in patients suffering from SAH. METHODS We conducted an observational cohort study of 88 patients treated for SAH at Umeå University Hospital in 2014-2018. Serum and CSF samples were analysed using an enzyme-linked immunosorbent assay to quantify NFL levels. Outcome was assessed using Glasgow Outcome Scale Extended and dichotomised as favourable or unfavourable. Differences in NFL levels between outcome groups were analysed using repeated measurements ANOVA. Relationship between CSF and serum NFL levels was analysed using Pearson's correlation. A multivariate binary logistic regression model and a receiver operation characteristic curve were used to assess the predictive value of serum NFL. RESULTS A significant correlation between serum and CSF-NFL levels could be seen (Pearson's correlation coefficient = 0.7, p < .0001). Mean level of serum NFL was higher in the unfavourable outcome group than the favourable outcome group (p < .0001), in all epochs of SAH, and correlated with initial disease severity on the World Federation of Neurosurgical Societies scale. Serum NFL in the late phase displayed the best predictive potential in a receiver operation characteristic curve analysis (AUC=0.845, p < .0001). CONCLUSION Levels of NFL in serum and CSF are correlated. Early serum NFL levels seem to reflect initial tissue damage and serum NFL levels in the late phase may reflect secondary events such as vasospasm or delayed cerebral ischemia. Serum NFL may be used as a prognostic marker of clinical outcome in SAH.
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Affiliation(s)
- Conny Johansson
- Department of Clinical Science, Neurosciences, Umeå University, SE-901 87, Umea, Sweden.
| | - Helena Aineskog
- Department of Clinical Science, Neurosciences, Umeå University, SE-901 87, Umea, Sweden
| | - Lars-Owe D Koskinen
- Department of Clinical Science, Neurosciences, Umeå University, SE-901 87, Umea, Sweden
| | | | - Peter Lindvall
- Department of Clinical Science, Neurosciences, Umeå University, SE-901 87, Umea, Sweden
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26
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Hviid CVB, Benros ME, Krogh J, Nordentoft M, Christensen SH. Serum glial fibrillary acidic protein and neurofilament light chain in treatment-naïve patients with unipolar depression. J Affect Disord 2023; 338:341-348. [PMID: 37336248 DOI: 10.1016/j.jad.2023.06.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 05/22/2023] [Accepted: 06/15/2023] [Indexed: 06/21/2023]
Abstract
BACKGROUND Unipolar depression has been associated with increased levels of glial dysfunction and neurodegeneration biomarkers, such as Glial Fibrillary Acidic Protein (GFAP) and Neurofilament light chain (NfL). However, previous studies were conducted on patients taking psychotropic medication and did not monitor longitudinal associations between disease status and GFAP/NfL. METHODS Treatment-naïve patients with unipolar depression (n = 110) and healthy controls (n = 33) were included. GFAP/NfL serum levels were analyzed by Single Molecule Array at baseline and 3-month follow-up. The primary endpoint was GFAP/NfL levels in patients with depression compared with healthy controls. The secondary endpoint was the associations between GFAP/NfL with depression severity and cognitive function. RESULTS The patients' mean HAM-D17 score was 18.9 (SD 3.9) at baseline and improved by 7.9 (SD 6.8) points during follow-up. GFAP/NfL was quantified in all individuals. At baseline, the adjusted GFAP levels were -16.8 % (95 % CI: -28.8 to -1.9, p = 0.03) lower among patients with depression compared to healthy controls, while NfL levels were comparable between the groups (p = 0.57). In patients with depression, mean NfL levels increased from baseline to follow-up (0.68 pg/ml, p = 0.03), while GFAP levels were unchanged (p = 0.24). We did not find consistent associations between NfL/GFAP with depression scores or cognitive function. CONCLUSION This largest study of serum NfL/GFAP levels in patients with depression did not support previous findings of elevated GFAP/NfL in patients with depression or positive associations with depression severity. Although limited by a small control group, our study may support the presence of glial dysfunction but not damage to neurons in depression.
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Affiliation(s)
- Claus V B Hviid
- Department of Clinical Biochemistry, Aalborg University Hospital, Aalborg, Denmark; Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aalborg University, Aalborg, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.
| | - Michael E Benros
- Copenhagen Research Centre for Mental Health, Mental Health Centre Copenhagen, Copenhagen University Hospital, Denmark; Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Jesper Krogh
- Department of Endocrinology and Metabolism, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Merete Nordentoft
- Copenhagen Research Centre for Mental Health, Mental Health Centre Copenhagen, Copenhagen University Hospital, Denmark
| | - Silje H Christensen
- Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark
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27
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Schjørring ME, Parkner T, Knudsen CS, Tybirk L, Hviid CVB. Neurofilament light chain: serum reference intervals in Danish children aged 0-17 years. Scand J Clin Lab Invest 2023; 83:403-407. [PMID: 37632388 DOI: 10.1080/00365513.2023.2251003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/07/2023] [Accepted: 08/19/2023] [Indexed: 08/28/2023]
Abstract
Elevated levels of neurofilament light chain (NfL) in the blood is an unspecific biomarker for damage to neuronal axons. The measurement of NfL levels in the blood can provide useful information for monitoring and prognostication of various neurological disorders in children, but a reference interval (RI) is needed before the clinical implementation of the biomarker. We aimed to establish a RI for children aged 0-17 years. Serum samples from 292 healthy reference subjects aged 0.4-17.9 years were analysed by a single-molecule array (Simoa®) established for routine clinical use. Non-parametric quantile regression was used to model a continuous RI, and a traditional age-partitioned non-parametric RI was established according to Clinical and Laboratory Standard Institute (CLSI) guideline C28-A3. Furthermore, we investigated the effect of hemolysis on assay performance. The traditional age-partitioned non-parametric RI for the age group <3 years was 3.5-16.6 ng/L and 2.1-13.9 ng/L in the age group ≥3 years, respectively. The continuous RI showed an age-dependent decrease in median NfL levels in the first three years of life which was also evident in the age-partitioning of the traditional RI. We found no difference between sexes and no impact of hemolysis on the NfL test results. This study establishes a pediatric RI for serum NfL and lays the groundwork for its future use in clinical practice.
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Affiliation(s)
- Mia Elbek Schjørring
- Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark
| | - Tina Parkner
- Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, Aarhus University, Denmark
| | | | - Lea Tybirk
- Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark
| | - Claus Vinter Bødker Hviid
- Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, Aarhus University, Denmark
- Department of Clinical Biochemistry, Aalborg University Hospital, Denmark
- Department of Clinical Medicine, Aalborg University, Denmark
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28
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Körtvelyessy P, Diekämper E, Ruprecht K, Endres M, Stubbemann P, Kurth F, Graw JA, Menk M, Kuhle J, Wohlrab F. Serum neurofilament light chain in COVID-19 and the influence of renal function. Eur J Med Res 2023; 28:389. [PMID: 37770938 PMCID: PMC10537078 DOI: 10.1186/s40001-023-01375-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 09/18/2023] [Indexed: 09/30/2023] Open
Abstract
COVID-19 is associated with various neurological symptoms. Serum neurofilament light chain (sNfL) is a robust marker for neuroaxonal injury. Recent studies have shown that elevated levels of sNfL are associated with unfavorable outcome in COVID-19 patients. However, neuroaxonal injury is rare in COVID-19, and renal dysfunction and hypoxia, both of which are known in severe COVID-19, can also increase sNfL levels. Thus, the meaning and mechanisms of sNfL elevation in COVID-19 patients remain unclear. We evaluated sNfL levels in 48 patients with COVID-19 (mean age = 63 years) and correlated them to clinical outcome, the form of oxygen therapy, and creatinine. Levels of sNfL were age adjusted and compared with normal values and z-scores. COVID-19 patients treated with nasal cannula had normal sNfL levels (mean sNfL = 19.6 pg/ml) as well as patients with high-flow treatment (mean sNfL = 40.8 pg/ml). Serum NfL levels were statistically significantly higher in COVID-19 patients treated with mechanical ventilation on intensive care unit (ICU) (mean sNfL = 195.7 pg/ml, p < 0.01). There was a strong correlation between sNfL elevation and unfavorable outcome in COVID-19 patients (p < 0.01). However, serum creatinine levels correlated directly and similarly with sNfL elevation and with unfavorable outcome in COVID-19 patients (p < 0.01). Additionally, multivariate analysis for serum creatinine and sNfL showed that both variables are jointly associated with clinical outcomes. Our results identify renal dysfunction as an important possible confounder for sNfL elevation in COVID-19. Thus, serum creatinine and renal dysfunction should be strongly considered in studies evaluating sNfL as a biomarker in COVID-19.
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Affiliation(s)
- Peter Körtvelyessy
- Department of Neurology, Charité - Universitätsmedizin Berlin, Freie Universität Berlin and Humboldt-Universität zu Berlin, Hindenburgdamm 30, 12200, Berlin, Germany.
- German Center for Neurodegenerative Diseases (DZNE) in Magdeburg, 39120, Magdeburg, Germany.
| | - Elena Diekämper
- German Center for Neurodegenerative Diseases (DZNE) in Magdeburg, 39120, Magdeburg, Germany
| | - Klemens Ruprecht
- Department of Neurology, Charité - Universitätsmedizin Berlin, Freie Universität Berlin and Humboldt-Universität zu Berlin, Hindenburgdamm 30, 12200, Berlin, Germany
| | - Matthias Endres
- Department of Neurology, Charité - Universitätsmedizin Berlin, Freie Universität Berlin and Humboldt-Universität zu Berlin, Hindenburgdamm 30, 12200, Berlin, Germany
- German Center for Neurodegenerative Diseases (DZNE) in Berlin, 10117, Berlin, Germany
| | - Paula Stubbemann
- Department of Pneumology, Charité - Universitätsmedizin Berlin, Freie Universität Berlin and Humboldt-Universität zu Berlin, 13533, Berlin, Germany
| | - Florian Kurth
- Department of Pneumology, Charité - Universitätsmedizin Berlin, Freie Universität Berlin and Humboldt-Universität zu Berlin, 13533, Berlin, Germany
| | - Jan Adriaan Graw
- Department of Anaesthesiology and Operative Intensive Care Medicine, Charité - Universitätsmedizin Berlin, Freie Universität Berlin and Humboldt-Universität zu Berlin, 13533, Berlin, Germany
- Department of Anesthesiology and Intensive Care Medicine, Universitätsklinikum Ulm, Ulm University, 89081, Ulm, Germany
| | - Mario Menk
- Department of Anaesthesiology and Operative Intensive Care Medicine, Charité - Universitätsmedizin Berlin, Freie Universität Berlin and Humboldt-Universität zu Berlin, 13533, Berlin, Germany
| | - Jens Kuhle
- MS Center, Neurology and Research Center for Clinical Neuroimmunology and Neuroscience Basel, University Hospital and University Basel, Basel, Switzerland
| | - Felix Wohlrab
- Department of Neurology, Charité - Universitätsmedizin Berlin, Freie Universität Berlin and Humboldt-Universität zu Berlin, Hindenburgdamm 30, 12200, Berlin, Germany
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29
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Sievert T, Didriksson I, Spångfors M, Lilja G, Blennow K, Zetterberg H, Frigyesi A, Friberg H. Neurofilament light chain on intensive care admission is an independent predictor of mortality in COVID-19: a prospective multicenter study. Intensive Care Med Exp 2023; 11:66. [PMID: 37768470 PMCID: PMC10539241 DOI: 10.1186/s40635-023-00547-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 09/06/2023] [Indexed: 09/29/2023] Open
Abstract
BACKGROUND Neurofilament light chain (NfL), glial fibrillary acidic protein (GFAP), and total-tau protein (tau) are novel blood biomarkers of neurological injury, and may be used to predict outcomes in critical COVID-19. METHODS A prospective multicentre cohort study of 117 consecutive and critically ill COVID-19 patients in six intensive care units (ICUs) in southern Sweden between May and November 2020. Serial NfL, GFAP and tau were analysed in relation to mortality, the Glasgow Outcome Scale Extended (GOSE) and the physical (PCS) and mental (MCS) components of health-related quality of life at one year. RESULTS NfL, GFAP and tau on ICU admission predicted one-year mortality with an area under the curve (AUC) of 0.82 (95% confidence interval [CI] 0.74[Formula: see text]0.90), 0.72 (95% CI 0.62[Formula: see text]0.82) and 0.66 (95% CI 0.54[Formula: see text]0.77). NfL on admission was an independent predictor of one-year mortality (p = 0.039). Low NfL and GFAP values were associated with good PCS ([Formula: see text]45) at one year but not with good MCS ([Formula: see text]45) or GOSE ([Formula: see text]5). CONCLUSIONS NfL on ICU admission was an independent predictor of mortality. High levels of NfL, GFAP and tau were associated with mortality but not with poor GOSE in survivors at one year. Low levels of NfL and GFAP were associated with improved physical health-related quality of life.
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Affiliation(s)
- Theodor Sievert
- Department of Clinical Medicine, Anaesthesiology and Intensive Care, Lund University, Lund, SE-22185 Sweden
- Department of Intensive and Perioperative Care, Skåne University Hospital, Lund, SE-22185 Sweden
| | - Ingrid Didriksson
- Department of Clinical Medicine, Anaesthesiology and Intensive Care, Lund University, Lund, SE-22185 Sweden
- Department of Intensive and Perioperative Care, Skåne University Hospital, Malmö, SE-20502 Sweden
| | - Martin Spångfors
- Department of Clinical Medicine, Anaesthesiology and Intensive Care, Lund University, Lund, SE-22185 Sweden
- Department of Anaesthesia and Intensive Care, Kristianstad Hospital, Kristianstad, SE-29133 Sweden
| | - Gisela Lilja
- Department of Neurology, Skåne University Hospital, Lund, SE-22185 Sweden
| | - Kaj Blennow
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Mölndal, SE-43180 Sweden
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, SE-43180 Sweden
| | - Henrik Zetterberg
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Mölndal, SE-43180 Sweden
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, SE-43180 Sweden
- Department of Neurodegenerative Disease, University College London Institute of Neurology, London, United Kingdom
- United Kingdom Dementia Research Institute, University College London, London, United Kingdom
- Hong Kong Center for Neurodegenerative Diseases, Hong Kong, China
- Wisconsin Alzheimer’s Disease Research Center, University of Wisconsin School of Medicine and Public Health, University of Wisconsin-Madison, Madison, United States of America
| | - Attila Frigyesi
- Department of Clinical Medicine, Anaesthesiology and Intensive Care, Lund University, Lund, SE-22185 Sweden
- Department of Intensive and Perioperative Care, Skåne University Hospital, Lund, SE-22185 Sweden
| | - Hans Friberg
- Department of Clinical Medicine, Anaesthesiology and Intensive Care, Lund University, Lund, SE-22185 Sweden
- Department of Intensive and Perioperative Care, Skåne University Hospital, Malmö, SE-20502 Sweden
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30
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Valentino P, Malucchi S, Bava CI, Martire S, Capobianco M, Malentacchi M, Sperli F, Oggero A, Di Sapio A, Bertolotto A. Serum Neurofilaments are a reliable biomarker to early detect PML in Multiple Sclerosis patients. Mult Scler Relat Disord 2023; 77:104893. [PMID: 37481820 DOI: 10.1016/j.msard.2023.104893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 07/13/2023] [Indexed: 07/25/2023]
Abstract
BACKGROUND The earliest detection of progressive multifocal leukoencephalopathy (PML) is crucial in Natalizumab (NTZ)-treated Multiple Sclerosis (MS) patients. This study aims to assess serum Neurofilaments (sNFL) ability to early detect PML in longitudinal patients' follow-up. METHODS NFL were retrospectively measured in four PML cases occurred at the Regional Referring Center for MS (CRESM, Italy), in samples collected since one year before PML diagnosis, at PML diagnosis, during PML and in post-PML follow-up. sNFL levels were interpreted according to previously defined reference values. Clinical examination and EDSS were performed at each NTZ infusion. Routinary MRI was undertaken every six months; after PML diagnosis, MRI was performed according to clinical evaluation. sNFL were also measured in 45 NTZ-treated patients experiencing NEDA-3 status for at least 12 months. RESULTS Patients showed different PML onsets and manifestations: in 3 patients routinary brain MRI revealed radiological signs of PML preceding different clinical manifestations, while in one patient brain MRI was performed after the clinical onset. PML diagnosis was defined at the time of the first detection of JCV DNA in cerebrospinal fluid. The following different PML phases were considered: 1. Basal (up to 4 months before PML diagnosis): sNFL values were in the normal range in all patients' samples, except for one (median 9.1 pg/ml, range 6.2-15.1 pg/ml) 2. Pre-PML (within 3 months before PML diagnosis): sNFL were elevated in all available samples (median 19.50 pg/ml, range 15.50-33.80 pg/ml). 3. PML diagnosis: sNFL were elevated in all patients (median 59.20 pg/ml, range 11.1-101.50 pg/ml). 4. PML/IRIS: during this phase, sNFL levels reached their peak (median 96.35 pg/ml, range 20.5-272.9) in all patients. 5. Post-PML (recovery phase, starting from the first MRI without enhancement, up to the end of follow-up): sNFL levels showed a decrease (median 12.80 pg/ml, range 9.30-30.60); however, based on reference values, sNFL were still elevated in 2 out of 4 patients at the end of their follow-up (622 and 887 days after PML diagnosis). sNFL were always elevated when MRI scan suggested a suspicious of PML. In NEDA-3 patients, sNFL levels were in the normal range in all patients' samples (median 4.7 pg/ml, range 1.4-8.6 pg/ml). CONCLUSION Elevated sNFL were observed not only at PML diagnosis, but also in pre-PML phase. At PML recovery, sNFL weren't normalized in all patients' samples, suggesting ongoing neuronal degeneration. sNFL represent a reliable biomarker and should be introduced in clinical practice as an additional/alternative parameter to MRI to early detect and monitor PML.
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Affiliation(s)
- P Valentino
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, 10043 Orbassano, Italy; CRESM Biobank, University Hospital San Luigi Gonzaga, Regione Gonzole 10, 10043 Orbassano, Italy.
| | - S Malucchi
- Department of Neurology and CRESM, University Hospital San Luigi Gonzaga, Regione Gonzole 10, 10043 Orbassano, Italy
| | - C I Bava
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, 10043 Orbassano, Italy
| | - S Martire
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, 10043 Orbassano, Italy; Department of Neuroscience "Rita Levi Montalcini", University of Turin, Italy, Via Cherasco 15, 10100 Turin, Italy
| | - M Capobianco
- Department of Neurology, S. Croce e Carle Hospital, Via Michele Coppino, 26, 12100 Cuneo, Italy
| | - M Malentacchi
- Department of Neurology and CRESM, University Hospital San Luigi Gonzaga, Regione Gonzole 10, 10043 Orbassano, Italy
| | - F Sperli
- Department of Neurology and CRESM, University Hospital San Luigi Gonzaga, Regione Gonzole 10, 10043 Orbassano, Italy
| | - A Oggero
- Department of Neurology and CRESM, University Hospital San Luigi Gonzaga, Regione Gonzole 10, 10043 Orbassano, Italy
| | - A Di Sapio
- CRESM Biobank, University Hospital San Luigi Gonzaga, Regione Gonzole 10, 10043 Orbassano, Italy; Department of Neurology and CRESM, University Hospital San Luigi Gonzaga, Regione Gonzole 10, 10043 Orbassano, Italy
| | - A Bertolotto
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, 10043 Orbassano, Italy; Koelliker Hospital, C.so Galileo Ferraris, 247/255, 10134 Turin, Italy
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Coppens S, Lehmann S, Hopley C, Hirtz C. Neurofilament-Light, a Promising Biomarker: Analytical, Metrological and Clinical Challenges. Int J Mol Sci 2023; 24:11624. [PMID: 37511382 PMCID: PMC10380627 DOI: 10.3390/ijms241411624] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/13/2023] [Accepted: 07/15/2023] [Indexed: 07/30/2023] Open
Abstract
Neurofilament-light chain (Nf-L) is a non-specific early-stage biomarker widely studied in the context of neurodegenerative diseases (NDD) and traumatic brain injuries (TBI), which can be measured in biofluids after axonal damage. Originally measured by enzyme-linked immunosorbent assay (ELISA) in cerebrospinal fluid (CSF), Nf-L can now be quantified in blood with the emergence of ultrasensitive assays. However, to ensure successful clinical implementation, reliable clinical thresholds and reference measurement procedures (RMP) should be developed. This includes establishing and distributing certified reference materials (CRM). As a result of the complexity of Nf-L and the number of circulating forms, a clear definition of what is measured when immunoassays are used is also critical to achieving standardization to ensure the long-term success of those assays. The use of powerful tools such as mass spectrometry for developing RMP and defining the measurand is ongoing. Here, we summarize the current methods in use for quantification of Nf-L in biofluid showing potential for clinical implementation. The progress and challenges in developing RMP and defining the measurand for Nf-L standardization of diagnostic tests are addressed. Finally, we discuss the impact of pathophysiological factors on Nf-L levels and the establishment of a clinical cut-off.
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Affiliation(s)
- Salomé Coppens
- National Measurement Laboratory, LGC Limited, Teddington TW11 0LY, UK
- Univ. Montpellier, IRMB-PPC, INM, CHU Montpellier, INSERM CNRS, 34295 Montpellier, France
| | - Sylvain Lehmann
- Univ. Montpellier, IRMB-PPC, INM, CHU Montpellier, INSERM CNRS, 34295 Montpellier, France
| | | | - Christophe Hirtz
- Univ. Montpellier, IRMB-PPC, INM, CHU Montpellier, INSERM CNRS, 34295 Montpellier, France
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32
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Mortensen C, Steffensen KD, Simonsen E, Herskind K, Madsen JS, Olsen DA, Iversen DB, Bergmann TK, Pottegård A, Stage TB. Neurofilament light chain as a biomarker of axonal damage in sensory neurons and paclitaxel-induced peripheral neuropathy in patients with ovarian cancer. Pain 2023; 164:1502-1511. [PMID: 36508173 DOI: 10.1097/j.pain.0000000000002840] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 11/08/2022] [Indexed: 12/14/2022]
Abstract
ABSTRACT Paclitaxel-induced peripheral neuropathy (PIPN) is a barrier to effective cancer treatment and impacts quality of life among patients with cancer. We used a translational approach to assess the utility of neurofilament light chain (NFL) as a biomarker of PIPN in a human cell model and in patients with ovarian cancer. We measured NFL in medium from human induced pluripotent stem cell-derived sensory neurons (iPSC-SNs) exposed to paclitaxel. Serum NFL (sNFL) levels were quantified in 190 patients with ovarian cancer receiving paclitaxel/carboplatin chemotherapy at baseline and after each of the following 2 or 6 cycles. Adverse outcomes related to PIPN were retrospectively obtained, and Cox regression model was performed with different sNFL cut-offs after first cycle. The apparent elimination half-life of sNFL was estimated in patients who discontinued paclitaxel. Paclitaxel neurotoxicity in iPSC-SNs was accompanied by NFL release in a concentration-dependent manner ( P < 0.001, analysis of variance). Serum NFL levels increased substantially in patients during paclitaxel/carboplatin chemotherapy with considerable interindividual variability. Patients with sNFL >150 pg/mL after first cycle had increased risk to discontinue paclitaxel early (unadjusted HR: 2.47 [95% CI 1.16-5.22], adjusted HR: 2.25 [95% CI: 0.88-5.79]). Similar trends were shown for risk of severe PIPN and paclitaxel dose reduction because of PIPN. The median elimination half-life of sNFL was 43 days (IQR 27-82 days). Neurofilament light chain constitutes an objective biomarker of neurotoxicity in iPSC-SNs and in ovarian cancer patients with high sNFL predicting PIPN-related adverse outcomes. If prospectively validated, NFL can be used to study PIPN and may guide clinical decision making and personalize treatment with paclitaxel.
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Affiliation(s)
- Christina Mortensen
- Clinical Pharmacology, Pharmacy, and Environmental Medicine, Department of Public Health, University of Southern Denmark, Odense, Denmark
| | - Karina Dahl Steffensen
- Department of Oncology, Lillebaelt University Hospital of Southern Denmark, Vejle, Denmark
- Department of Regional Health Research, University of Southern Denmark, Odense, Denmark
| | - Emma Simonsen
- Clinical Pharmacology, Pharmacy, and Environmental Medicine, Department of Public Health, University of Southern Denmark, Odense, Denmark
| | - Kamille Herskind
- Clinical Pharmacology, Pharmacy, and Environmental Medicine, Department of Public Health, University of Southern Denmark, Odense, Denmark
| | - Jonna Skov Madsen
- Department of Regional Health Research, University of Southern Denmark, Odense, Denmark
- Department of Biochemistry and Immunology, Lillebaelt University Hospital of Southern Denmark, Vejle, Denmark
| | - Dorte Aalund Olsen
- Department of Biochemistry and Immunology, Lillebaelt University Hospital of Southern Denmark, Vejle, Denmark
| | - Ditte Bork Iversen
- Clinical Pharmacology, Pharmacy, and Environmental Medicine, Department of Public Health, University of Southern Denmark, Odense, Denmark
| | - Troels Korshøj Bergmann
- Department of Regional Health Research, University of Southern Denmark, Odense, Denmark
- Department of Clinical Pharmacology, Odense University Hospital, Odense, Denmark
| | - Anton Pottegård
- Clinical Pharmacology, Pharmacy, and Environmental Medicine, Department of Public Health, University of Southern Denmark, Odense, Denmark
| | - Tore Bjerregaard Stage
- Clinical Pharmacology, Pharmacy, and Environmental Medicine, Department of Public Health, University of Southern Denmark, Odense, Denmark
- Department of Clinical Pharmacology, Odense University Hospital, Odense, Denmark
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Kwon HS, Lee H, Kim YS, Choi H, Lee KY, Lee YJ, Lee EH, Hwang M, Park H, Koh SH. Comparing Neurofilament Light Chain Levels in Serum and Plasma. Dement Neurocogn Disord 2023; 22:109-111. [PMID: 37545865 PMCID: PMC10400347 DOI: 10.12779/dnd.2023.22.3.109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 04/14/2023] [Accepted: 05/01/2023] [Indexed: 08/08/2023] Open
Affiliation(s)
- Hyuk Sung Kwon
- Department of Neurology, Hanyang University Guri Hospital, Hanyang University College of Medicine, Guri, Korea
| | - Hyesun Lee
- Department of Neurology, Hanyang University Guri Hospital, Hanyang University College of Medicine, Guri, Korea
| | - Young Seo Kim
- Department of Neurology, Hanyang University College of Medicine, Seoul, Korea
| | - Hojin Choi
- Department of Neurology, Hanyang University Guri Hospital, Hanyang University College of Medicine, Guri, Korea
| | - Kyu-Yong Lee
- Department of Neurology, Hanyang University Guri Hospital, Hanyang University College of Medicine, Guri, Korea
| | - Young Joo Lee
- Department of Neurology, Hanyang University Guri Hospital, Hanyang University College of Medicine, Guri, Korea
| | - Eun-Hye Lee
- Department of Neurology, Hanyang University Guri Hospital, Hanyang University College of Medicine, Guri, Korea
| | - Mina Hwang
- Department of Neurology, Hanyang University Guri Hospital, Hanyang University College of Medicine, Guri, Korea
| | - Hyunhee Park
- Department of Neurology, Hanyang University Guri Hospital, Hanyang University College of Medicine, Guri, Korea
| | - Seong-Ho Koh
- Department of Neurology, Hanyang University Guri Hospital, Hanyang University College of Medicine, Guri, Korea
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34
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Rosadas C, Taylor GP. Pre-analytical long-term stability of neopterin and neurofilament light in stored cerebrospinal fluid samples. Clin Chem Lab Med 2023; 61:1230-1234. [PMID: 36692943 DOI: 10.1515/cclm-2022-0904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 01/11/2023] [Indexed: 01/25/2023]
Abstract
OBJECTIVES The aim of this study was to evaluate the impact of long-term sample storage on the concentrations of neopterin and neurofilament light (Nfl) in cerebrospinal fluid (CSF) samples. These are useful markers of neuroinflammation and neuronal damage and have been applied as biomarkers for several neurological diseases. However, different pre-analytical variables have potential to influence results. METHODS Twenty-one CSF samples donated by patients with HTLV-1-associated myelopathy (HAM) and stored for up to 11 years at -80 °C were retested after three-years for neopterin (n=10) and Nfl (n=11) by ELISA. RESULTS There was a strong correlation between the paired results (r>0.98, p<0.0001). Neopterin concentrations (nmol/L) ranged from 12.4 to 64 initially and from 11.5 to 64.4 when retested, with means (SD) of 30 (18.4) 1st test and 33 (19.1) 2nd test. Nfl concentrations (pg/mL) ranged from 79.9 to 3,733 initially and from 86.3 to 3,332, when retested with means (SD) of 1,138 (1,272) 1st test and 1,009 (1,114) at re-test. CONCLUSIONS Storing CSF samples at -80 °C appears not to impact the quantification of neopterin and Nfl allowing confidence in the reporting of archived samples.
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Affiliation(s)
- Carolina Rosadas
- Section of Virology, Department of Infectious Disease, Imperial College London, London, UK
| | - Graham P Taylor
- Section of Virology, Department of Infectious Disease, Imperial College London, London, UK
- National Centre for Human Retrovirology, St Mary's Hospital, London, UK
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Eide PK, Lashkarivand A, Pripp A, Valnes LM, Hovd MH, Ringstad G, Blennow K, Zetterberg H. Plasma neurodegeneration biomarker concentrations associate with glymphatic and meningeal lymphatic measures in neurological disorders. Nat Commun 2023; 14:2084. [PMID: 37045847 PMCID: PMC10097687 DOI: 10.1038/s41467-023-37685-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Accepted: 03/27/2023] [Indexed: 04/14/2023] Open
Abstract
Clearance of neurotoxic brain proteins via cerebrospinal fluid (CSF) to blood has recently emerged to be crucial, and plasma biomarkers of neurodegeneration were newly introduced to predict neurological disease. This study examines in 106 individuals with neurological disorders associations between plasma biomarkers [40 and 42 amino acid-long amyloid-β (Aβ40 and Aβ42), total-tau, glial fibrillary acidic protein (GFAP), and neurofilament light (NfL)] and magnetic resonance imaging measures of CSF-mediated clearance from brain via extra-vascular pathways (proxy of glymphatic function) and CSF-to-blood clearance variables from pharmacokinetic modeling (proxy of meningeal lymphatic egress). We also examine how biomarkers vary during daytime and associate with subjective sleep quality. Plasma concentrations of neurodegeneration markers associate with indices of glymphatic and meningeal lymphatic functions in individual- and disease-specific manners, vary during daytime, but are unaffected by sleep quality. The results suggest that plasma concentrations of neurodegeneration biomarkers associate with measures of glymphatic and meningeal lymphatic function.
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Affiliation(s)
- Per Kristian Eide
- Dept. of Neurosurgery, Oslo University Hospital-Rikshospitalet, Oslo, Norway.
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway.
| | - Aslan Lashkarivand
- Dept. of Neurosurgery, Oslo University Hospital-Rikshospitalet, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Are Pripp
- Oslo Centre of Biostatistics and Epidemiology, Research Support Services, Oslo University Hospital, Oslo, Norway
- Faculty of Health Sciences, Oslo Metropolitan University, Oslo, Norway
| | - Lars Magnus Valnes
- Dept. of Neurosurgery, Oslo University Hospital-Rikshospitalet, Oslo, Norway
| | - Markus Herberg Hovd
- Section for Pharmacology and Pharmaceutical Biosciences, Department of Pharmacy, University of Oslo, Oslo, Norway
| | - Geir Ringstad
- Dept. of Radiology, Oslo University Hospital-Rikshospitalet, Oslo, Norway
- Department of Geriatrics and Internal medicine, Sorlandet Hospital, Arendal, Norway
| | - Kaj Blennow
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, the Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden
| | - Henrik Zetterberg
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, the Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden
- Department of Neurodegenerative Disease, UCL Institute of Neurology, Queen Square, London, UK
- UK Dementia Research Institute at UCL, London, UK
- Hong Kong Center for Neurodegenerative Diseases, Clear Water Bay, Hong Kong, China
- UW Department of Medicine, School of Medicine and Public Health, Madison, WI, USA
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36
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Youssef P, Hughes L, Kim WS, Halliday GM, Lewis SJG, Cooper A, Dzamko N. Evaluation of plasma levels of NFL, GFAP, UCHL1 and tau as Parkinson's disease biomarkers using multiplexed single molecule counting. Sci Rep 2023; 13:5217. [PMID: 36997567 PMCID: PMC10063670 DOI: 10.1038/s41598-023-32480-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Accepted: 03/28/2023] [Indexed: 04/01/2023] Open
Abstract
Objective biomarkers for Parkinson's Disease (PD) could aid early and specific diagnosis, effective monitoring of disease progression, and improved design and interpretation of clinical trials. Although alpha-synuclein remains a biomarker candidate of interest, the multifactorial and heterogenous nature of PD highlights the need for a PD biomarker panel. Ideal biomarker candidates include markers that are detectable in easily accessible samples, (ideally blood) and that reflect the underlying pathological process of PD. In the present study, we explored the diagnostic and prognostic PD biomarker potential of the SIMOA neurology 4-plex-A biomarker panel, which included neurofilament light (NFL), glial fibrillary acid protein (GFAP), tau and ubiquitin C-terminal hydrolase L1 (UCHL-1). We initially performed a serum vs plasma comparative study to determine the most suitable blood-based matrix for the measurement of these proteins in a multiplexed assay. The levels of NFL and GFAP in plasma and serum were highly correlated (Spearman rho-0.923, p < 0.0001 and rho = 0.825, p < 0.001 respectively). In contrast, the levels of tau were significantly higher in plasma compared to serum samples (p < 0.0001) with no correlation between sample type (Spearman p > 0.05). The neurology 4-plex-A panel, along with plasma alpha-synuclein was then assessed in a cross-sectional cohort of 29 PD patients and 30 controls. Plasma NFL levels positively correlated with both GFAP and alpha-synuclein levels (rho = 0.721, p < 0.0001 and rho = 0.390, p < 0.05 respectively). As diagnostic biomarkers, the control and PD groups did not differ in their mean NFL, GFAP, tau or UCHL-1 plasma levels (t test p > 0.05). As disease state biomarkers, motor severity (MDS-UPDRS III) correlated with increased NFL (rho = 0.646, p < 0.0001), GFAP (rho = 0.450, p < 0.05) and alpha-synuclein levels (rho = 0.406, p < 0.05), while motor stage (Hoehn and Yahr) correlated with increased NFL (rho = 0.455, p < 0.05) and GFAP (rho = 0.549, p < 0.01) but not alpha-synuclein levels (p > 0.05). In conclusion, plasma was determined to be most suitable blood-based matrix for multiplexing the neurology 4-plex-A panel. Given their correlation with motor features of PD, NFL and GFAP appear to be promising disease state biomarker candidates and further longitudinal validation of these two proteins as blood-based biomarkers for PD progression is warranted.
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Affiliation(s)
- Priscilla Youssef
- Faculty of Medicine and Health and the Brain and Mind Centre, School of Medical Sciences, University of Sydney, Camperdown, NSW, 2050, Australia
| | - Laura Hughes
- Faculty of Medicine and Health and the Brain and Mind Centre, School of Medical Sciences, University of Sydney, Camperdown, NSW, 2050, Australia
| | - Woojin S Kim
- Faculty of Medicine and Health and the Brain and Mind Centre, School of Medical Sciences, University of Sydney, Camperdown, NSW, 2050, Australia
| | - Glenda M Halliday
- Faculty of Medicine and Health and the Brain and Mind Centre, School of Medical Sciences, University of Sydney, Camperdown, NSW, 2050, Australia
| | - Simon J G Lewis
- Faculty of Medicine and Health and the Brain and Mind Centre, School of Medical Sciences, University of Sydney, Camperdown, NSW, 2050, Australia
| | - Antony Cooper
- Garvan Institute of Medical Research, Darlinghurst, NSW, 2010, Australia
- St Vincent's Clinical School, UNSW-Sydney, Darlinghurst, NSW, 2010, Australia
| | - Nicolas Dzamko
- Faculty of Medicine and Health and the Brain and Mind Centre, School of Medical Sciences, University of Sydney, Camperdown, NSW, 2050, Australia.
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37
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Meyer T, Salkic E, Grehl T, Weyen U, Kettemann D, Weydt P, Günther R, Lingor P, Koch JC, Petri S, Hermann A, Prudlo J, Großkreutz J, Baum P, Boentert M, Metelmann M, Norden J, Cordts I, Weishaupt JH, Dorst J, Ludolph A, Koc Y, Walter B, Münch C, Spittel S, Dreger M, Maier A, Körtvélyessy P. Performance of serum neurofilament light chain in a wide spectrum of clinical courses of amyotrophic lateral sclerosis-a cross-sectional multicenter study. Eur J Neurol 2023; 30:1600-1610. [PMID: 36899448 DOI: 10.1111/ene.15773] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/15/2023] [Accepted: 03/06/2023] [Indexed: 03/12/2023]
Abstract
BACKGROUND AND PURPOSE The objective was to assess the performance of serum neurofilament light chain (sNfL) in amyotrophic lateral sclerosis (ALS) in a wide range of disease courses, in terms of progression, duration and tracheostomy invasive ventilation (TIV). METHODS A prospective cross-sectional study at 12 ALS centers in Germany was performed. sNfL concentrations were age adjusted using sNfL Z scores expressing the number of standard deviations from the mean of a control reference database and correlated to ALS duration and ALS progression rate (ALS-PR), defined by the decline of the ALS Functional Rating Scale. RESULTS In the total ALS cohort (n = 1378) the sNfL Z score was elevated (3.04; 2.46-3.43; 99.88th percentile). There was a strong correlation of sNfL Z score with ALS-PR (p < 0.001). In patients with long (5-10 years, n = 167) or very long ALS duration (>10 years, n = 94) the sNfL Z score was significantly lower compared to the typical ALS duration of <5 years (n = 1059) (p < 0.001). Furthermore, in patients with TIV, decreasing sNfL Z scores were found in correlation with TIV duration and ALS-PR (p = 0.002; p < 0.001). CONCLUSIONS The finding of moderate sNfL elevation in patients with long ALS duration underlined the favorable prognosis of low sNfL. The strong correlation of sNfL Z score with ALS-PR strengthened its value as progression marker in clinical management and research. The lowering of sNfL in correlation with long TIV duration could reflect a reduction either in disease activity or in the neuroaxonal substrate of biomarker formation during the protracted course of ALS.
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Affiliation(s)
- Thomas Meyer
- Department of Neurology, Center for ALS and Other Motor Neuron Disorders, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Charité-Universitätsmedizin Berlin, Berlin, Germany
- APST Research GmbH, Berlin, Germany
| | - Erma Salkic
- Department of Neurology, Center for ALS and Other Motor Neuron Disorders, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Torsten Grehl
- Department of Neurology, Center for ALS and Other Motor Neuron Disorders, Alfried Krupp Krankenhaus, Essen, Germany
| | - Ute Weyen
- Department of Neurology, Center for ALS and Other Motor Neuron Disorders, Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil, Bochum, Germany
| | - Dagmar Kettemann
- Department of Neurology, Center for ALS and Other Motor Neuron Disorders, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Patrick Weydt
- Department for Neurodegenerative Disorders and Gerontopsychiatry, Bonn University, Bonn, Germany
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), Research Site Bonn, Bonn, Germany
| | - René Günther
- Department of Neurology, Technische Universität Dresden, Dresden, Germany
- Deutsches Zentrum für Neurodegenerative Erkrankungen, Research Site Dresden (DZNE), Dresden, Germany
| | - Paul Lingor
- Department of Neurology, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Jan Christoph Koch
- Department of Neurology, Universitätsmedizin Göttingen, Göttingen, Germany
| | - Susanne Petri
- Department of Neurology, Hannover Medical School, Hannover, Germany
| | - Andreas Hermann
- Department of Neurology, Translational Neurodegeneration Section "Albrecht-Kossel", University of Rostock, University Medical Center, Rostock, Germany
- Deutsches Zentrum für Neurodegenerative Erkrankungen, Research Site Rostock/Greifswald, DZNE, Greifswald, Germany
| | - Johannes Prudlo
- Deutsches Zentrum für Neurodegenerative Erkrankungen, Research Site Rostock/Greifswald, DZNE, Greifswald, Germany
- Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock,, Germany
| | - Julian Großkreutz
- Department of Neurology, Universitätsmedizin Schleswig-Holstein, Campus Lübeck, Lübeck, Germany
| | - Petra Baum
- Department of Neurology, Universitätsklinikum Leipzig, Leipzig, Germany
| | - Matthias Boentert
- Department of Neurology, Universitätsklinikum Münster, Münster, Germany
| | - Moritz Metelmann
- Department of Neurology, Universitätsklinikum Leipzig, Leipzig, Germany
| | - Jenny Norden
- Department of Neurology, Center for ALS and Other Motor Neuron Disorders, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Isabell Cordts
- Department of Neurology, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Jochen H Weishaupt
- Division for Neurodegenerative Diseases, Department of Neurology, Mannheim Center for Translational Medicine, University Medicine Mannheim, Heidelberg University, Mannheim, Germany
| | | | - Albert Ludolph
- Department of Neurology, Ulm University, Ulm, Germany
- Deutsches Zentrum für Neurodegenerative Erkrankungen, Research Site Ulm (DZNE), Ulm, Germany
| | - Yasemin Koc
- Department of Neurology, Center for ALS and Other Motor Neuron Disorders, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Bertram Walter
- Department of Neurology, Center for ALS and Other Motor Neuron Disorders, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Christoph Münch
- Department of Neurology, Center for ALS and Other Motor Neuron Disorders, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Charité-Universitätsmedizin Berlin, Berlin, Germany
- APST Research GmbH, Berlin, Germany
| | - Susanne Spittel
- Department of Neurology, Center for ALS and Other Motor Neuron Disorders, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Charité-Universitätsmedizin Berlin, Berlin, Germany
- APST Research GmbH, Berlin, Germany
| | - Marie Dreger
- Department of Neurology, Center for ALS and Other Motor Neuron Disorders, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - André Maier
- Department of Neurology, Center for ALS and Other Motor Neuron Disorders, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Péter Körtvélyessy
- Department of Neurology, Center for ALS and Other Motor Neuron Disorders, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Charité-Universitätsmedizin Berlin, Berlin, Germany
- Deutsches Zentrum für Neurodegenerative Erkrankungen, Research Site Magdeburg (DZNE), Magdeburg, Germany
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Arslan B, Zetterberg H. Neurofilament light chain as neuronal injury marker - what is needed to facilitate implementation in clinical laboratory practice? Clin Chem Lab Med 2023; 61:1140-1149. [PMID: 36880940 DOI: 10.1515/cclm-2023-0036] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 02/27/2023] [Indexed: 03/08/2023]
Abstract
Neurobiomarkers have attracted significant attention over the last ten years. One promising biomarker is the neurofilament light chain protein (NfL). Since the introduction of ultrasensitive assays, NfL has been developed into a widely used axonal damage marker of relevance to the diagnosis, prognostication, follow-up, and treatment monitoring of a range of neurological disorders, including multiple sclerosis, amyotrophic lateral sclerosis, and Alzheimer's disease. The marker is increasingly used clinically, as well as in clinical trials. Even if we have validated precise, sensitive, and specific assays for NfL quantification in both cerebrospinal fluid and blood, there are analytical, as well as pre- and post-analytical aspects of the total NfL testing process, including biomarker interpretation, to consider. Although the biomarker is already in use in specialised clinical laboratory settings, a more general use requires some further work. In this review, we provide brief basic information and opinions on NfL as a biomarker of axonal injury in neurological diseases and pinpoint additional work needed to facilitate biomarker implementation in clinical practice.
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Affiliation(s)
- Burak Arslan
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at The University of Gothenburg, Mölndal, Sweden
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden
| | - Henrik Zetterberg
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at The University of Gothenburg, Mölndal, Sweden
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden
- Department of Neurodegenerative Disease, UCL Institute of Neurology, London, UK
- UK Dementia Research Institute at UCL, London, UK
- Hong Kong Center for Neurodegenerative Diseases, Hong Kong, People's Republic of China
- Wisconsin Alzheimer's Disease Research Center, University of Wisconsin School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
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Abu-Rumeileh S, Abdelhak A, Foschi M, D'Anna L, Russo M, Steinacker P, Kuhle J, Tumani H, Blennow K, Otto M. The multifaceted role of neurofilament light chain protein in non-primary neurological diseases. Brain 2023; 146:421-437. [PMID: 36083979 PMCID: PMC9494370 DOI: 10.1093/brain/awac328] [Citation(s) in RCA: 37] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 09/02/2022] [Accepted: 09/02/2022] [Indexed: 11/17/2022] Open
Abstract
The advancing validation and exploitation of CSF and blood neurofilament light chain protein as a biomarker of neuroaxonal damage has deeply changed the current diagnostic and prognostic approach to neurological diseases. Further, recent studies have provided evidence of potential new applications of this biomarker also in non-primary neurological diseases. In the present review we summarize the state of the art, future perspectives, but also limitations, of neurofilament light chain protein as a CSF and blood biomarker in several medical fields, including intensive care medicine, surgery, internal medicine and psychiatry. In particular, neurofilament light chain protein is associated with the degree of neurological impairment and outcome in patients admitted to intensive care units or in the perioperative phase and it seems to be highly interconnected with cardiovascular risk factors. Beyond that, interesting diagnostic and prognostic insights have been provided by the investigation of neurofilament light chain protein in psychiatric disorders as well as in the current coronavirus disease-19 pandemic and in normal ageing. Altogether, current data outline a multifaceted applicability of CSF and blood neurofilament light chain protein ranging from the critical clinical setting to the development of precision medicine models suggesting a strict interplay between the nervous system pathophysiology and the health-illness continuum.
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Affiliation(s)
- Samir Abu-Rumeileh
- Department of Neurology, Martin-Luther-University of Halle-Wittenberg, Halle (Saale), Germany
| | - Ahmed Abdelhak
- Department of Neurology, University of California San Francisco (UCSF), San Francisco, USA
- Department of Neurology, Ulm University Hospital, Ulm, Germany
| | - Matteo Foschi
- Department of Neuroscience, Neurology Unit – S. Maria delle Croci Hospital of Ravenna, AUSL Romagna, Ravenna, Italy
| | - Lucio D'Anna
- Department of Stroke and Neuroscience, Charing Cross Hospital, Imperial College London, NHS Healthcare Trust, London, UK
- Department of Brain Sciences, Imperial College London, London, UK
| | - Michele Russo
- Department of Cardiology, S. Maria dei Battuti Hospital, AULSS 2 Veneto, Conegliano, Italy
| | - Petra Steinacker
- Department of Neurology, Martin-Luther-University of Halle-Wittenberg, Halle (Saale), Germany
| | - Jens Kuhle
- Neurologic Clinic and Policlinic, MS Center and Research Center for Clinical Neuroimmunology and Neuroscience Basel (RC2NB), Departments of Biomedicine and Clinical Research, University Hospital Basel, University of Basel, Basel, Switzerland
| | | | - Kaj Blennow
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, the Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden
| | - Markus Otto
- Department of Neurology, Martin-Luther-University of Halle-Wittenberg, Halle (Saale), Germany
- Department of Neurology, Ulm University Hospital, Ulm, Germany
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Højsgaard Chow H, Talbot J, Lundell H, Marstrand L, Gøbel Madsen C, Bach Søndergaard H, Bredahl Hansen M, Solberg Sørensen P, Siebner HR, Sellebjerg F. Dimethyl fumarate treatment of primary progressive multiple sclerosis: results of an open-label extension study. Mult Scler Relat Disord 2023; 70:104458. [PMID: 36586351 DOI: 10.1016/j.msard.2022.104458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/02/2022] [Accepted: 12/07/2022] [Indexed: 12/13/2022]
Abstract
INTRODUCTION Dimethyl fumarate treatment is approved in Europe for patients with relapsing-remitting multiple sclerosis (MS) and in the US for relapsing forms of MS. We recently published the results of the first randomized placebo-controlled trial of 48 weeks of treatment with dimethyl fumarate or placebo in primary progressive MS (PPMS) (clinicaltrial.gov NCT02959658). The placebo-controlled phase of the trial did not meet its primary endpoint (reduction in cerebrospinal fluid concentrations of neurofilament light chain [NFL]). AIM To investigate the effects of dimethyl fumarate treatment in the open-label extension phase of the trial (week 48-96), where all patients were treated with DMF. METHODS Reported data are from screening, week 48, and week 96 visits. Patients were clinically evaluated with Expanded Disability Status Scale (EDSS), 9-Hole Peg Test (9HPT), Timed 25-Foot Walk (T25FW) test, Symbol Digit Modalities Test (SDMT), California Verbal Learning Test, and Brief Visuospatial Memory-Revised. Serum NFL concentrations were measured by single-molecule array analysis. MRI was performed on a 3 tesla MRI scanner and included: new/enlarging lesions, volume of lesions, cortical grey matter, putamen, thalamus, and normal-appearing white matter, and additional diffusion tensor imaging and magnetization transfer ratio measures. RESULTS Forty-two patients entered the open-label treatment phase, and 33 patients (61%) had complete data sets at week 96. The remaining 39% did not complete the trial and were not evaluated at week 96. We found no evidence of differences in clinical and MRI measures between patients initially treated with dimethyl fumarate and patients initially treated with placebo from baseline to week 48 and from week 48-96, where all patients were treated with dimethyl fumarate. Serum NFL concentrations remained stable in both groups over 96 weeks. Assessed with either EDSS, T25FW, or 9HPT at week 96, progression was observed for 14 patients (45%). Interestingly, another 15 patients (46%) had improvement in one or more of these domains. Applying a cut-off of 8 points, 2 (6%) patients worsened on SDMT, 25 (78%) did not change, and 5 (16%) improved. CONCLUSIONS Dimethyl fumarate treatment showed no effects on neither clinical nor MRI outcomes or changes in serum concentrations of NFL. An expected number of patients showed evidence of progression on standard clinical scales; however, this was matched by an equal number of patients improving. The reasons for the physical improvement in an unexpectedly high proportion of patients must be addressed in future studies.
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Affiliation(s)
- Helene Højsgaard Chow
- Danish Multiple Sclerosis Center, Copenhagen University Hospital - Rigshospitalet, Nordre Ringvej 57, 2600 Glostrup, Denmark.
| | - Jacob Talbot
- Danish Multiple Sclerosis Center, Copenhagen University Hospital - Rigshospitalet, Nordre Ringvej 57, 2600 Glostrup, Denmark
| | - Henrik Lundell
- Danish Research Centre for Magnetic Resonance, Centre for Functional and Diagnostic Imaging and Research, Copenhagen University Hospital Amager and Hvidovre, Copenhagen Denmark, Kettegård Alle 30, 2650 Hvidovre, Denmark
| | - Lisbet Marstrand
- Danish Multiple Sclerosis Center, Copenhagen University Hospital - Rigshospitalet, Nordre Ringvej 57, 2600 Glostrup, Denmark
| | - Camilla Gøbel Madsen
- Danish Research Centre for Magnetic Resonance, Centre for Functional and Diagnostic Imaging and Research, Copenhagen University Hospital Amager and Hvidovre, Copenhagen Denmark, Kettegård Alle 30, 2650 Hvidovre, Denmark
| | - Helle Bach Søndergaard
- Danish Multiple Sclerosis Center, Copenhagen University Hospital - Rigshospitalet, Nordre Ringvej 57, 2600 Glostrup, Denmark
| | - Malene Bredahl Hansen
- Danish Multiple Sclerosis Center, Copenhagen University Hospital - Rigshospitalet, Nordre Ringvej 57, 2600 Glostrup, Denmark
| | - Per Solberg Sørensen
- Danish Multiple Sclerosis Center, Copenhagen University Hospital - Rigshospitalet, Nordre Ringvej 57, 2600 Glostrup, Denmark; Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen N, Copenhagen, Denmark
| | - Hartwig Roman Siebner
- Danish Research Centre for Magnetic Resonance, Centre for Functional and Diagnostic Imaging and Research, Copenhagen University Hospital Amager and Hvidovre, Copenhagen Denmark, Kettegård Alle 30, 2650 Hvidovre, Denmark; Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen N, Copenhagen, Denmark; Department of Neurology, Copenhagen University Hospital Bispebjerg and Frederiksberg, Bispebjerg Bakke 23, 2400 Copenhagen, Denmark
| | - Finn Sellebjerg
- Danish Multiple Sclerosis Center, Copenhagen University Hospital - Rigshospitalet, Nordre Ringvej 57, 2600 Glostrup, Denmark; Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen N, Copenhagen, Denmark
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Glascock J, Darras BT, Crawford TO, Sumner CJ, Kolb SJ, DiDonato C, Elsheikh B, Howell K, Farwell W, Valente M, Petrillo M, Tingey J, Jarecki J. Identifying Biomarkers of Spinal Muscular Atrophy for Further Development. J Neuromuscul Dis 2023; 10:937-954. [PMID: 37458045 PMCID: PMC10578234 DOI: 10.3233/jnd-230054] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/26/2023] [Indexed: 07/18/2023]
Abstract
BACKGROUND Spinal muscular atrophy (SMA) is caused by bi-allelic, recessive mutations of the survival motor neuron 1 (SMN1) gene and reduced expression levels of the survival motor neuron (SMN) protein. Degeneration of alpha motor neurons in the spinal cord causes progressive skeletal muscle weakness. The wide range of disease severities, variable rates of decline, and heterogenous clinical responses to approved disease-modifying treatment remain poorly understood and limit the ability to optimize treatment for patients. Validation of a reliable biomarker(s) with the potential to support early diagnosis, inform disease prognosis and therapeutic suitability, and/or confirm response to treatment(s) represents a significant unmet need in SMA. OBJECTIVES The SMA Multidisciplinary Biomarkers Working Group, comprising 11 experts in a variety of relevant fields, sought to determine the most promising candidate biomarker currently available, determine key knowledge gaps, and recommend next steps toward validating that biomarker for SMA. METHODS The Working Group engaged in a modified Delphi process to answer questions about candidate SMA biomarkers. Members participated in six rounds of reiterative surveys that were designed to build upon previous discussions. RESULTS The Working Group reached a consensus that neurofilament (NF) is the candidate biomarker best poised for further development. Several important knowledge gaps were identified, and the next steps toward filling these gaps were proposed. CONCLUSIONS NF is a promising SMA biomarker with the potential for prognostic, predictive, and pharmacodynamic capabilities. The Working Group has identified needed information to continue efforts toward the validation of NF as a biomarker for SMA.
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Affiliation(s)
| | - Basil T. Darras
- Boston Children’s Hospital/Harvard Medical School, Boston, MA, USA
| | - Thomas O. Crawford
- Johns Hopkins University School of Medicine Departments of Neurology and Neuroscience, Department of Neurology and Pediatrics, Baltimore, MD, USA
| | - Charlotte J. Sumner
- Johns Hopkins University School of Medicine Departments of Neurology and Neuroscience, Department of Neurology and Pediatrics, Baltimore, MD, USA
| | - Stephen J. Kolb
- Department of Neurology, The Ohio State University Wexner Medical Center, Columbus, OH, USA
- Department of Biological Chemistry & Pharmacology, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | | | - Bakri Elsheikh
- Department of Neurology, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Kelly Howell
- Spinal Muscular Atrophy Foundation, Jackson, WY, USA
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Panikkar D, Vivek S, Crimmins E, Faul J, Langa KM, Thyagarajan B. Pre-Analytical Variables Influencing Stability of Blood-Based Biomarkers of Neuropathology. J Alzheimers Dis 2023; 95:735-748. [PMID: 37574735 DOI: 10.3233/jad-230384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
BACKGROUND Sample collection and preanalytical protocols may significantly impact the results of large-scale epidemiological studies incorporating blood-based biomarkers of neuropathology. OBJECTIVE To evaluate the stability and assay variability of several blood-based biomarkers of neuropathology for common preanalytical conditions. METHODS We collected serum and plasma samples from 41 participants and evaluated the effect of processing delay of up to 72 h when stored at 4∘C, three freeze-thaw cycles, and a combination of 48-h processing delay when stored at 4∘C and three freeze-thaw cycles on biomarker stability. Using the Simoa assay (Quanterix Inc.), we measured amyloid-β 40 (Aβ40), amyloid-β 42 (Aβ42), neurofilament light (NfL), glial fibrillary acidic protein (GFAP), and phosphorylated tau 181 (p-tau-181). RESULTS We found that Aβ40 and Aβ42 levels significantly decreased after a 24-h processing delay in both plasma and serum samples, and a single freeze-thaw cycle (p < 0.0001). Nevertheless, serum Aβ42/40 ratio remained stable with a processing delay up to 48 h while plasma Aβ42/40 ratio showed only small but significant increase with a delay up to 72 h. Both plasma and serum GFAP and NfL levels were only modestly affected by processing delay and freeze-thaw cycles. Plasma p-tau-181 levels notably increased with a 24-, 48-, and 72-h processing delay, but remained stable in serum. Intra-individual variation over two weeks was minimal for all biomarkers and their levels were substantially lower in serum when compared with plasma. CONCLUSION These results suggest that standardizing preanalytical variables will allow robust measurements of biomarkers of neuropathology in population studies.
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Affiliation(s)
- Daniel Panikkar
- Department of Neuroscience, University of Minnesota, Minneapolis, MN, USA
| | - Sithara Vivek
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, USA
| | - Eileen Crimmins
- Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
| | - Jessica Faul
- Institute for Social Research, Survey Research Center, University of Michigan, Ann Arbor, MI, USA
| | - Kenneth M Langa
- Institute for Social Research, Survey Research Center, University of Michigan, Ann Arbor, MI, USA
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
- Veterans Affairs Ann Arbor Center for Clinical Management Research, Ann Arbor, MI, USA
| | - Bharat Thyagarajan
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, USA
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Chelban V, Nikram E, Perez-Soriano A, Wilke C, Foubert-Samier A, Vijiaratnam N, Guo T, Jabbari E, Olufodun S, Gonzalez M, Senkevich K, Laurens B, Péran P, Rascol O, Le Traon AP, Todd EG, Costantini AA, Alikhwan S, Tariq A, Ng BL, Muñoz E, Painous C, Compta Y, Junque C, Segura B, Zhelcheska K, Wellington H, Schöls L, Jaunmuktane Z, Kobylecki C, Church A, Hu MTM, Rowe JB, Leigh PN, Massey L, Burn DJ, Pavese N, Foltynie T, Pchelina S, Wood N, Heslegrave AJ, Zetterberg H, Bocchetta M, Rohrer JD, Marti MJ, Synofzik M, Morris HR, Meissner WG, Houlden H. Neurofilament light levels predict clinical progression and death in multiple system atrophy. Brain 2022; 145:4398-4408. [PMID: 35903017 PMCID: PMC9762941 DOI: 10.1093/brain/awac253] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 06/06/2022] [Accepted: 06/17/2022] [Indexed: 11/12/2022] Open
Abstract
Disease-modifying treatments are currently being trialled in multiple system atrophy. Approaches based solely on clinical measures are challenged by heterogeneity of phenotype and pathogenic complexity. Neurofilament light chain protein has been explored as a reliable biomarker in several neurodegenerative disorders but data on multiple system atrophy have been limited. Therefore, neurofilament light chain is not yet routinely used as an outcome measure in multiple system atrophy. We aimed to comprehensively investigate the role and dynamics of neurofilament light chain in multiple system atrophy combined with cross-sectional and longitudinal clinical and imaging scales and for subject trial selection. In this cohort study, we recruited cross-sectional and longitudinal cases in a multicentre European set-up. Plasma and CSF neurofilament light chain concentrations were measured at baseline from 212 multiple system atrophy cases, annually for a mean period of 2 years in 44 multiple system atrophy patients in conjunction with clinical, neuropsychological and MRI brain assessments. Baseline neurofilament light chain characteristics were compared between groups. Cox regression was used to assess survival; receiver operating characteristic analysis to assess the ability of neurofilament light chain to distinguish between multiple system atrophy patients and healthy controls. Multivariate linear mixed-effects models were used to analyse longitudinal neurofilament light chain changes and correlated with clinical and imaging parameters. Polynomial models were used to determine the differential trajectories of neurofilament light chain in multiple system atrophy. We estimated sample sizes for trials aiming to decrease neurofilament light chain levels. We show that in multiple system atrophy, baseline plasma neurofilament light chain levels were better predictors of clinical progression, survival and degree of brain atrophy than the neurofilament light chain rate of change. Comparative analysis of multiple system atrophy progression over the course of disease, using plasma neurofilament light chain and clinical rating scales, indicated that neurofilament light chain levels rise as the motor symptoms progress, followed by deceleration in advanced stages. Sample size prediction suggested that significantly lower trial participant numbers would be needed to demonstrate treatment effects when incorporating plasma neurofilament light chain values into multiple system atrophy clinical trials in comparison to clinical measures alone. In conclusion, neurofilament light chain correlates with clinical disease severity, progression and prognosis in multiple system atrophy. Combined with clinical and imaging analysis, neurofilament light chain can inform patient stratification and serve as a reliable biomarker of treatment response in future multiple system atrophy trials of putative disease-modifying agents.
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Affiliation(s)
- Viorica Chelban
- Correspondence to: Dr Viorica Chelban Department of Neuromuscular Diseases UCL Queen Square Institute of Neurology London WC1N 3BG, UK E-mail:
| | - Elham Nikram
- Peninsula Technology Assessment Group (PenTAG), University of Exeter, Exeter EX 2LU, UK
| | - Alexandra Perez-Soriano
- Movement Disorders Unit, Neurology Service, Hospital Clínic de Barcelona, Barcelona 08036, Spain
- Parkinson's Disease and Movement Disorders Unit, Neurology Department, Institute of Biomedical Research August Pi i Sunyer (IDIBAPS), Barcelona 08036, Spain
- Parkinson's Disease and Movement Disorders Unit, Neurology Department, Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, Madrid 28029, Spain
| | - Carlo Wilke
- Division Translational Genomics of Neurodegenerative Diseases, Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen, 72074 Tübingen, Germany
- German Center for Neurodegenerative Diseases (DZNE), 72074 Tübingen, Germany
| | - Alexandra Foubert-Samier
- CRMR AMS, Service de Neurologie – Maladies Neurodégénératives, CHU de Bordeaux, F-33000 Bordeaux, France
- Université de Bordeaux, CNRS, IMN, UMR 5293, F-33000 Bordeaux, France
- Université de Bordeaux, INSERM, BPH, U1219, F-33000 Bordeaux, France
- Inserm, CIC 1401 Bordeaux, Clinical Epidemiology Unit, F-33000 Bordeaux, France
| | - Nirosen Vijiaratnam
- Department Clinical and Movement Neuroscience, UCL Queen Square Institute of Neurology, University College London, London WC1N 3BG, UK
| | - Tong Guo
- Department Clinical and Movement Neuroscience, UCL Queen Square Institute of Neurology, University College London, London WC1N 3BG, UK
| | - Edwin Jabbari
- Department Clinical and Movement Neuroscience, UCL Queen Square Institute of Neurology, University College London, London WC1N 3BG, UK
| | - Simisola Olufodun
- Department of Neuromuscular Diseases, Queen Square Institute of Neurology, University College London, London WC1N 3BG, UK
| | - Mariel Gonzalez
- Department of Neuromuscular Diseases, Queen Square Institute of Neurology, University College London, London WC1N 3BG, UK
| | - Konstantin Senkevich
- Neurogenomics and Precision Medicine (NAP-Med) Laboratory, The Neuro (Montreal Neurological Institute-Hospital), Montreal, QC H3A 2B4, Canada
- Department of Neurology & Neurosurgery, McGill University, Montreal, QC H3A 2B4, Canada
- Laboratory of Human Genetics, Petersburg Nuclear Physics Institute named by B.P. Konstantinov of National Research Centre 'Kurchatov Institute', Gatchina 188300, Russia
- Laboratory of Medical Genetics, Pavlov First Saint-Petersburg State Medical University, St. Petersburg 197022, Russia
| | - Brice Laurens
- CRMR AMS, Service de Neurologie – Maladies Neurodégénératives, CHU de Bordeaux, F-33000 Bordeaux, France
- Université de Bordeaux, CNRS, IMN, UMR 5293, F-33000 Bordeaux, France
| | - Patrice Péran
- ToNIC, Toulouse NeuroImaging Center, UMR 1214, Université de Toulouse, 31024 Toulouse, France
| | - Olivier Rascol
- CRMR AMS, CHU de Toulouse, 31300 Toulouse, France
- Clinical Investigation Center CIC 1436, NS-Park/F-CRIN Network and NeuroToul COEN Center; Inserm, University of Toulouse 3 and CHU of Toulouse, F-31000 Toulouse, France
- Departments of Neurosciences and Clinical Pharmacology, CHU Toulouse and University of Toulouse 3, F-31000 Toulouse, France
| | - Anne Pavy Le Traon
- CRMR AMS, CHU de Toulouse, 31300 Toulouse, France
- Institut des Maladies Métaboliques et Cardiovasculaires, Inserm U 1297, Toulouse University, F-31000 Toulouse, France
| | - Emily G Todd
- Dementia Research Centre, Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, University College London, WC1N 3BG London, UK
| | - Alyssa A Costantini
- Department Clinical and Movement Neuroscience, UCL Queen Square Institute of Neurology, University College London, London WC1N 3BG, UK
| | - Sondos Alikhwan
- Department of Neuromuscular Diseases, Queen Square Institute of Neurology, University College London, London WC1N 3BG, UK
| | - Ambreen Tariq
- Department of Neuromuscular Diseases, Queen Square Institute of Neurology, University College London, London WC1N 3BG, UK
| | - Bai Lin Ng
- Department of Economics, University College London, London WC1N 3BG, UK
| | - Esteban Muñoz
- Movement Disorders Unit, Neurology Service, Hospital Clínic de Barcelona, Barcelona 08036, Spain
- Parkinson's Disease and Movement Disorders Unit, Neurology Department, Institute of Biomedical Research August Pi i Sunyer (IDIBAPS), Barcelona 08036, Spain
- Parkinson's Disease and Movement Disorders Unit, Neurology Department, Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, Madrid 28029, Spain
| | - Celia Painous
- Movement Disorders Unit, Neurology Service, Hospital Clínic de Barcelona, Barcelona 08036, Spain
- Parkinson's Disease and Movement Disorders Unit, Neurology Department, Institute of Biomedical Research August Pi i Sunyer (IDIBAPS), Barcelona 08036, Spain
- Parkinson's Disease and Movement Disorders Unit, Neurology Department, Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, Madrid 28029, Spain
| | - Yaroslau Compta
- Movement Disorders Unit, Neurology Service, Hospital Clínic de Barcelona, Barcelona 08036, Spain
- Parkinson's Disease and Movement Disorders Unit, Neurology Department, Institute of Biomedical Research August Pi i Sunyer (IDIBAPS), Barcelona 08036, Spain
- Parkinson's Disease and Movement Disorders Unit, Neurology Department, Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, Madrid 28029, Spain
| | - Carme Junque
- Parkinson's Disease and Movement Disorders Unit, Neurology Department, Institute of Biomedical Research August Pi i Sunyer (IDIBAPS), Barcelona 08036, Spain
- Parkinson's Disease and Movement Disorders Unit, Neurology Department, Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, Madrid 28029, Spain
- Medical Psychology Unit, Department of Medicine, Institute of Neuroscience, University of Barcelona, 08035 Barcelona, Spain
| | - Barbara Segura
- Parkinson's Disease and Movement Disorders Unit, Neurology Department, Institute of Biomedical Research August Pi i Sunyer (IDIBAPS), Barcelona 08036, Spain
- Parkinson's Disease and Movement Disorders Unit, Neurology Department, Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, Madrid 28029, Spain
- Medical Psychology Unit, Department of Medicine, Institute of Neuroscience, University of Barcelona, 08035 Barcelona, Spain
| | - Kristina Zhelcheska
- Department of Neuromuscular Diseases, Queen Square Institute of Neurology, University College London, London WC1N 3BG, UK
| | - Henny Wellington
- Biomarkers Factory Laboratory, UK Dementia Research Institute, UCL Queen Square Institute of Neurology, London WC1N 3BG, UK
| | - Ludger Schöls
- Division Translational Genomics of Neurodegenerative Diseases, Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen, 72074 Tübingen, Germany
- German Center for Neurodegenerative Diseases (DZNE), 72074 Tübingen, Germany
| | - Zane Jaunmuktane
- Queen Square Brain Bank for Neurological Disorders, UCL Queen Square Institute of Neurology, WC1N 3BG London, UK
| | - Christopher Kobylecki
- Department of Neurology, Manchester Academic Health Science Centre, Northern Care Alliance NHS Foundation Trust, Stott Lane, Salford M6 8HD, UK
- Division of Neuroscience and Experimental Psychology, School of Biological Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - Alistair Church
- Department of Neurology, Royal Gwent Hospital, Newport NP20 2UB, UK
| | - Michele T M Hu
- Division of Neurology, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford OX3 9DU, UK
| | - James B Rowe
- Department of Clinical Neurosciences, Cambridge University, Cambridge CB3 0SZ, UK
- MRC Cognition and Brain Sciences Unit, University of Cambridge, CB3 0SZ Cambridge, UK
- Neurology Department, Cambridge University Hospitals NHS Trust, Cambridge CB2 0QQ, UK
| | - P Nigel Leigh
- Department of Neuroscience, Brighton and Sussex Medical School, Brighton BN1 9PX, UK
| | - Luke Massey
- Neurology Department, University Hospitals Dorset, Poole BH15 2JB, UK
| | - David J Burn
- Faculty of Medical Sciences, Clinical Ageing Research Unit, Newcastle University, NE4 5PL Newcastle, UK
| | - Nicola Pavese
- Department of Neurodegenerative Disease, UCL Institute of Neurology, Queen Square, WC1N 3BG London, UK
| | - Tom Foltynie
- Department Clinical and Movement Neuroscience, UCL Queen Square Institute of Neurology, University College London, London WC1N 3BG, UK
| | - Sofya Pchelina
- Laboratory of Human Genetics, Petersburg Nuclear Physics Institute named by B.P. Konstantinov of National Research Centre 'Kurchatov Institute', Gatchina 188300, Russia
- Laboratory of Medical Genetics, Pavlov First Saint-Petersburg State Medical University, St. Petersburg 197022, Russia
| | - Nicholas Wood
- Department Clinical and Movement Neuroscience, UCL Queen Square Institute of Neurology, University College London, London WC1N 3BG, UK
| | - Amanda J Heslegrave
- Biomarkers Factory Laboratory, UK Dementia Research Institute, UCL Queen Square Institute of Neurology, London WC1N 3BG, UK
| | - Henrik Zetterberg
- Biomarkers Factory Laboratory, UK Dementia Research Institute, UCL Queen Square Institute of Neurology, London WC1N 3BG, UK
- Department of Neurodegenerative Disease, UCL Institute of Neurology, Queen Square, WC1N 3BG London, UK
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, the Sahlgrenska Academy at the University of Gothenburg, 405 30 Mölndal, Sweden
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, 405 30 Mölndal, Sweden
- Hong Kong Center for Neurodegenerative Diseases, Clear Water Bay, Hong Kong 1512-1518, China
| | - Martina Bocchetta
- Dementia Research Centre, Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, University College London, WC1N 3BG London, UK
| | - Jonathan D Rohrer
- Dementia Research Centre, Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, University College London, WC1N 3BG London, UK
| | - Maria J Marti
- Movement Disorders Unit, Neurology Service, Hospital Clínic de Barcelona, Barcelona 08036, Spain
- Parkinson's Disease and Movement Disorders Unit, Neurology Department, Institute of Biomedical Research August Pi i Sunyer (IDIBAPS), Barcelona 08036, Spain
- Parkinson's Disease and Movement Disorders Unit, Neurology Department, Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, Madrid 28029, Spain
| | - Matthis Synofzik
- Division Translational Genomics of Neurodegenerative Diseases, Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen, 72074 Tübingen, Germany
- German Center for Neurodegenerative Diseases (DZNE), 72074 Tübingen, Germany
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Paulsen AJ, Schubert CR, Pinto AA, Chappell RJ, Chen Y, Cruickshanks KJ, Engelman CD, Ferrucci L, Hancock LM, Johnson SC, Merten N. Associations of sensory and motor function with blood-based biomarkers of neurodegeneration and Alzheimer's disease in midlife. Neurobiol Aging 2022; 120:177-188. [PMID: 36209638 PMCID: PMC9613601 DOI: 10.1016/j.neurobiolaging.2022.08.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 08/12/2022] [Accepted: 08/17/2022] [Indexed: 10/15/2022]
Abstract
Pathological biomarkers of dementia and Alzheimer's disease (AD) change decades before clinical symptoms. Common sensory and motor changes in aging adults may be early markers of neurodegeneration. We investigated if midlife sensory and motor functions in Beaver Dam Offspring Study (BOSS) participants (N = 1529) were associated with longitudinal changes in blood-based biomarkers of neurodegeneration (neurofilament light chain (NfL); total tau (TTau)) and AD (amyloid beta (Aβ)). Mixed-effects models with baseline sensory and motor function as determinants and 10-year biomarker change as outcome were used. Participants with hearing impairment and worse motor function (among women) showed faster increases in NfL level over time (0.8% per year; 0.3% per year, respectively). There were no significant associations with TTau or Aβ. We found consistent relationships between worse baseline hearing and motor function with a faster increase in neurodegeneration, specifically serum NfL level. Future studies with longer follow-up should determine if sensory and motor changes are more reflective of general neurodegeneration than AD-specific pathology and whether sensory and motor tests may be useful screening tools for neurodegeneration risk.
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Affiliation(s)
- Adam J Paulsen
- Department of Ophthalmology and Visual Sciences, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA.
| | - Carla R Schubert
- Department of Ophthalmology and Visual Sciences, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
| | - Alex A Pinto
- Department of Ophthalmology and Visual Sciences, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
| | - Richard J Chappell
- Department of Biostatistics and Medical Informatics and Department of Statistics, University of Wisconsin, Madison, WI, USA
| | - Yanjun Chen
- Department of Ophthalmology and Visual Sciences, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
| | - Karen J Cruickshanks
- Department of Ophthalmology and Visual Sciences, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA; Department of Population Health Sciences, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
| | - Corinne D Engelman
- Department of Population Health Sciences, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
| | - Luigi Ferrucci
- Longitudinal Study Section, Intramural Research Program, National Institute on Aging, NIH, Baltimore, MD, USA
| | - Laura M Hancock
- Department of Neurology, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
| | - Sterling C Johnson
- Alzheimer's Disease Research Center and Wisconsin Alzheimer's Institute, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA; Geriatric Research Education and Clinical Center of the William S. Middleton Memorial Veterans Hospital, Madison, WI, USA
| | - Natascha Merten
- Department of Geriatrics and Adult Development, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
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Abstract
Alzheimer's disease (AD) characterization has progressed from being indexed using clinical symptomatology followed by neuropathological examination at autopsy to in vivo signatures using cerebrospinal fluid (CSF) biomarkers and positron emission tomography. The core AD biomarkers reflect amyloid-β plaques (A), tau pathology (T) and neurodegeneration (N), following the ATN schedule, and are now being introduced into clinical routine practice. This is an important development, as disease-modifying treatments are now emerging. Further, there are now reproducible data on CSF biomarkers which reflect synaptic pathology, neuroinflammation and common co-pathologies. In addition, the development of ultrasensitive techniques has enabled the core CSF biomarkers of AD pathophysiology to be translated to blood (e.g., phosphorylated tau, amyloid-β and neurofilament light). In this chapter, we review where we stand with both core and novel CSF biomarkers, as well as the explosion of data on blood biomarkers. Also, we discuss potential applications in research aiming to better understand the disease, as well as possible use in routine clinical practice and therapeutic trials.
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Affiliation(s)
- Joel Simrén
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Gothenburg, Sweden.
| | - Anders Elmgren
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Kaj Blennow
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Henrik Zetterberg
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Gothenburg, Sweden; Department of Neurodegenerative Disease, Institute of Neurology, University College London, London, United Kingdom; UK Dementia Research Institute, University College London, London, United Kingdom; Hong Kong Center for Neurodegenerative Diseases, Hong Kong, China
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Valentino P, Malucchi S, Martire S, Bava CI, Capobianco MA, Bertolotto A. sNFL applicability as additional monitoring tool in natalizumab extended interval dosing regimen for RRMS patients. Mult Scler Relat Disord 2022; 67:104176. [PMID: 36126541 DOI: 10.1016/j.msard.2022.104176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 09/09/2022] [Indexed: 12/29/2022]
Abstract
INTRODUCTION Extended interval dosing (EID) of Natalizumab (NAT) has been proposed to reduce progressive multifocal leukoencephalopathy (PML) risk associated with standard interval dosing (SID) in people with multiple sclerosis (MS). Previous studies have suggested that NAT effectiveness is maintained in the great majority of patients who switch from SID to EID; monitoring of disease activity is currently based exclusively on clinical and MRI parameters. Frequent MRI are expensive and not always applicable, underlining the need for biological markers able to detect central nervous system lesions. Serum Neurofilament-light chain (sNFL) currently represents the most promising biomarker of disease activity, prognosis and treatment response in MS, and their clinical suitability is increasingly evident. The objective of the present study is to assess the applicability of sNFL as additional/alternative measure of treatment efficacy during EID regimen. METHODS We measured sNFL by Simoa technology in longitudinal samples from 63 Relapsing Remitting (RR) MS patients switched from SID to EID. INCLUSION CRITERIA diagnosis of RRMS, age 18-60 years; NAT SID for at least 12 months; NEDA-3 (no evidence of disease activity) for at least 12 months; availability of at least 2 serum samples collected 6 months apart. Patients' follow-up time during EID was at least 12 months and 2 blood samples were collected after at least 6 and 12 months. Clinical examination was performed before each infusion, while MRI 6 and 12 months after NAT initiation and according to PML risk during the whole study. RESULTS No patients showed clinical or MRI activity during the whole follow-up. sNFL levels measured during SID and EID were comparable, without significant difference between groups. The effect of EID on NFL levels did not show significant effects (LMM, p> 0.05) and sNFL levels did not vary with time during SID or EID protocols (LMM, p> 0.05). Intra-individual sNFL levels demonstrated overall stability during SID and EID (median CV=11% between SID and EID samples). According to our previously published reference values, sNFL levels were in the normal range in all samples, both during SID and EID. CONCLUSIONS Our results suggest that sNFL quantification can be used as an alternative/additional approach to MRI in managing individual patients. The present work provides a new clinical application of sNFL to monitor NAT efficacy.
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Affiliation(s)
- Paola Valentino
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, Orbassano 10043, Italy; CRESM Biobank, University Hospital San Luigi Gonzaga, Regione Gonzole 10, Orbassano 10043, Italy.
| | - Simona Malucchi
- Department of Neurology and CRESM, University Hospital San Luigi Gonzaga, Regione Gonzole 10, Orbassano 10043, Italy
| | - Serena Martire
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, Orbassano 10043, Italy; Department of Neuroscience "Rita Levi Montalcini", University of Turin, Via Cherasco 15, Turin 10100, Italy
| | - Cecilia Irene Bava
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, Orbassano 10043, Italy
| | - Marco Alfonso Capobianco
- CRESM Biobank, University Hospital San Luigi Gonzaga, Regione Gonzole 10, Orbassano 10043, Italy; Department of Neurology, S. Croce e Carle Hospital, Via Michele Coppino, 26, Cuneo 12100, Italy
| | - Antonio Bertolotto
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, Orbassano 10043, Italy; Department of Neurology, Koelliker Hospital, C.so Galileo Ferraris, 247/255, Turin 10134, Italy
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Kapoor M, Carr A, Foiani M, Heslegrave A, Zetterberg H, Malaspina A, Compton L, Hutton E, Rossor A, Reilly MM, Lunn MP. Association of plasma neurofilament light chain with disease activity in chronic inflammatory demyelinating polyradiculoneuropathy. Eur J Neurol 2022; 29:3347-3357. [PMID: 35837802 PMCID: PMC9796374 DOI: 10.1111/ene.15496] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 06/06/2022] [Accepted: 06/25/2022] [Indexed: 01/02/2023]
Abstract
BACKGROUND AND PURPOSE This study was undertaken to explore associations between plasma neurofilament light chain (pNfL) concentration (pg/ml) and disease activity in patients with chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) and examine the usefulness of pNfL concentrations in determining disease remission. METHODS We examined pNfL concentrations in treatment-naïve CIDP patients (n = 10) before and after intravenous immunoglobulin (IVIg) induction treatment, in pNfL concentrations in patients on maintenance IVIg treatment who had stable (n = 15) versus unstable disease (n = 9), and in clinically stable IVIg-treated patients (n = 10) in whom we suspended IVIg to determine disease activity and ongoing need for maintenance IVIg. pNfL concentrations in an age-matched healthy control group were measured for comparison. RESULTS Among treatment-naïve patients, pNfL concentration was higher in patients before IVIg treatment than healthy controls and subsequently reduced to be comparable to control group values after IVIg induction. Among CIDP patients on IVIg treatment, pNfL concentration was significantly higher in unstable patients than stable patients. A pNFL concentration > 16.6 pg/ml distinguished unstable treated CIDP from stable treated CIDP (sensitivity = 86.7%, specificity = 66.7%, area under receiver operating characteristic curve = 0.73). Among the treatment withdrawal group, there was a statistically significant correlation between pNfL concentration at time of IVIg withdrawal and the likelihood of relapse (r = 0.72, p < 0.05), suggesting an association of higher pNfL concentration with active disease. CONCLUSIONS pNfL concentrations may be a sensitive, clinically useful biomarker in assessing subclinical disease activity.
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Affiliation(s)
- Mahima Kapoor
- Department of Neuromuscular DiseasesUniversity College London Queen Square Institute of NeurologyLondonUK
- Department of NeurosciencesCentral Clinical School, Monash University, Alfred CentreMelbourneVictoriaAustralia
| | - Aisling Carr
- Department of Neuromuscular DiseasesUniversity College London Queen Square Institute of NeurologyLondonUK
- Centre for Neuromuscular diseasesNational Hospital for Neurology and NeurosurgeryLondonUK
| | - Martha Foiani
- Department of Neurodegenerative DiseaseUniversity College London Queen Square Institute of NeurologyLondonUK
- UK Dementia Research Institute at University College LondonLondonUK
| | - Amanda Heslegrave
- Department of Neurodegenerative DiseaseUniversity College London Queen Square Institute of NeurologyLondonUK
- UK Dementia Research Institute at University College LondonLondonUK
| | - Henrik Zetterberg
- Department of Neurodegenerative DiseaseUniversity College London Queen Square Institute of NeurologyLondonUK
- UK Dementia Research Institute at University College LondonLondonUK
- Clinical Neurochemistry LaboratorySahlgrenska University HospitalMölndalSweden
- Department of Psychiatry and NeurochemistryInstitute of Neuroscience and Physiology, Sahlgrenska Academy at University of GothenburgMölndalSweden
- Hong Kong Center for Neurodegenerative DiseasesHong KongChina
| | - Andrea Malaspina
- Department of Neuromuscular DiseasesUniversity College London Queen Square Institute of NeurologyLondonUK
- University College London Queen Square Motor Neuron Disease Centre, Queen Square Institute of NeurologyLondonUK
- Centre for Neuroscience and TraumaBlizard Institute, Barts and London School of Medicine and Dentistry, Queen Mary University of LondonLondonUK
- ALS Biomarkers StudyUniversity College LondonLondonUK
| | - Laura Compton
- Centre for Neuromuscular diseasesNational Hospital for Neurology and NeurosurgeryLondonUK
| | - Elspeth Hutton
- Department of NeurosciencesCentral Clinical School, Monash University, Alfred CentreMelbourneVictoriaAustralia
| | - Alexander Rossor
- Department of Neuromuscular DiseasesUniversity College London Queen Square Institute of NeurologyLondonUK
- Centre for Neuromuscular diseasesNational Hospital for Neurology and NeurosurgeryLondonUK
| | - Mary M. Reilly
- Department of Neuromuscular DiseasesUniversity College London Queen Square Institute of NeurologyLondonUK
- Centre for Neuromuscular diseasesNational Hospital for Neurology and NeurosurgeryLondonUK
| | - Michael P. Lunn
- Department of Neuromuscular DiseasesUniversity College London Queen Square Institute of NeurologyLondonUK
- Centre for Neuromuscular diseasesNational Hospital for Neurology and NeurosurgeryLondonUK
- Neuroimmunology and CSF LaboratoryUniversity College London Queen Square Institute of NeurologyLondonUK
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Ella versus Simoa Serum Neurofilament Assessment to Monitor Treatment Response in Highly Active Multiple Sclerosis Patients. Int J Mol Sci 2022; 23:ijms232012361. [PMID: 36293227 PMCID: PMC9604350 DOI: 10.3390/ijms232012361] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 09/30/2022] [Accepted: 10/10/2022] [Indexed: 11/16/2022] Open
Abstract
The measurement of serum neurofilament light chain (sNfL) is of growing importance in the field of neurology. In the management of multiple sclerosis, it can serve as a useful marker to assess disease activity and treatment response. This paper compares two available methods, namely the Single Molecule Array (Simoa) and the Ella microfluid platform, to measure longitudinal sNfL levels of 42 highly active multiple sclerosis patients treated with alemtuzumab over a period of 36 months. In order to assess the methods agreement, Bland-Altman plots and Passing-Bablok regression were analyzed. Here, we show that despite the fact that Ella measures around 24% higher values than Simoa, both are equally suitable for longitudinal sNfL monitoring.
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Bornhorst JA, Figdore D, Campbell MR, Pazdernik VK, Mielke MM, Petersen RC, Algeciras-Schimnich A. Plasma neurofilament light chain (NfL) reference interval determination in an Age-stratified cognitively unimpaired cohort. Clin Chim Acta 2022; 535:153-156. [PMID: 36041549 DOI: 10.1016/j.cca.2022.08.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 08/13/2022] [Accepted: 08/16/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND AND AIMS Neurofilament light chain (NfL) is an emerging biomarker of neurodegenerative disease progression. As plasma NfL increases with age, characterization of NfL concentrations in an age-stratified cognitively unimpaired population was assessed. MATERIALS AND METHODS EDTA-plasma samples were measured using the Simoa® NF-light™ Advantage Kit assay. One-sided reference intervals were established from 1100 cognitive normal individuals (588 male, 512 female) aged 20 to 95 years. Of those, 927 samples were obtained from the Mayo Clinic Study of Aging cohort (age > 50 years), and the remainder (age < 50 years) were obtained from individuals without known neurological conditions. All samples were from individuals without known chronic kidney disease, stroke or myocardial infarction, and a body mass index < 30 kg/m2. RESULTS The 97.5th percentile limits for the following age ranges (in years) were (pg/mL): 20 s: ≤8.4, 30 s: ≤11.4, 40 s: ≤15.4, 50 s: ≤20.8, 60 s: ≤28.0, 70 s: ≤37.9, 80+: ≤51.2. Sex had no significant effect on reference intervals. Observed NfL concentrations increased at a rate of 3.1 % per year of age. CONCLUSIONS Characterization of the rate of NfL concentration increase and decade-wide reference intervals from a neurologically well-characterized patient population will aid in interpretation of NfL during the clinical evaluation of a potential neurodegenerative disease.
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Affiliation(s)
- Joshua A Bornhorst
- Department of Laboratory Medicine and Pathology, Mayo Clinic Rochester Minnesota, USA
| | - Daniel Figdore
- Department of Laboratory Medicine and Pathology, Mayo Clinic Rochester Minnesota, USA
| | - Michelle R Campbell
- Department of Laboratory Medicine and Pathology, Mayo Clinic Rochester Minnesota, USA
| | - Vanessa K Pazdernik
- Department of Quantitative Health Sciences, Mayo Clinic Rochester Minnesota, USA
| | - Michelle M Mielke
- Department of Epidemiology and Prevention, Wake Forest University School of Medicine, Winston-Salem, NC, USA
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Lotz-Havla AS, Katzdobler S, Nuscher B, Weiß K, Levin J, Havla J, Maier EM. Serum glial fibrillary acidic protein and neurofilament light chain in patients with early treated phenylketonuria. Front Neurol 2022; 13:1011470. [PMID: 36247773 PMCID: PMC9559705 DOI: 10.3389/fneur.2022.1011470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 09/12/2022] [Indexed: 12/01/2022] Open
Abstract
To pave the way for healthy aging in early treated phenylketonuria (ETPKU) patients, a better understanding of the neurological course in this population is needed, requiring easy accessible biomarkers to monitor neurological disease progression in large cohorts. The objective of this pilot study was to investigate the potential of glial fibrillary acidic protein (GFAP) and neurofilament light chain (NfL) as blood biomarkers to indicate changes of the central nervous system in ETPKU. In this single-center cross-sectional study, GFAP and NfL concentrations in serum were quantified using the Simoa® multiplex technology in 56 ETPKU patients aged 6–36 years and 16 age matched healthy controls. Correlation analysis and hierarchical linear regression analysis were performed to investigate an association with disease-related biochemical parameters and retinal layers assessed by optical coherence tomography. ETPKU patients did not show significantly higher GFAP concentrations (mean 73 pg/ml) compared to healthy controls (mean 60 pg/ml, p = 0.140). However, individual pediatric and adult ETPKU patients had GFAP concentrations above the healthy control range. In addition, there was a significant association of GFAP concentrations with current plasma tyrosine concentrations (r = −0.482, p = 0.036), a biochemical marker in phenylketonuria, and the retinal inner nuclear layer volume (r = 0.451, p = 0.04). There was no evidence of NfL alterations in our ETPKU cohort. These pilot results encourage multicenter longitudinal studies to further investigate serum GFAP as a complementary tool to better understand and monitor neurological disease progression in ETPKU. Follow-up investigations on aging ETPKU patients are required to elucidate the potential of serum NfL as biomarker.
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Affiliation(s)
- Amelie S. Lotz-Havla
- Department of Pediatrics, Dr. von Hauner Children's Hospital, University Hospital, LMU Munich, Munich, Germany
| | - Sabrina Katzdobler
- Department of Neurology, University Hospital, LMU Munich, Munich, Germany
| | - Brigitte Nuscher
- Department of Neurology, University Hospital, LMU Munich, Munich, Germany
| | - Katharina Weiß
- Department of Pediatrics, Dr. von Hauner Children's Hospital, University Hospital, LMU Munich, Munich, Germany
| | - Johannes Levin
- Department of Neurology, University Hospital, LMU Munich, Munich, Germany
- German Center for Neurodegenerative Diseases, site Munich, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Joachim Havla
- Institute of Clinical Neuroimmunology, University Hospital, LMU Munich, Munich, Germany
- Data Integration for Future Medicine (DIFUTURE) Consortium, LMU Munich, Munich, Germany
- *Correspondence: Joachim Havla
| | - Esther M. Maier
- Department of Pediatrics, Dr. von Hauner Children's Hospital, University Hospital, LMU Munich, Munich, Germany
- Esther M. Maier
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