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Oh SJ. Amifampridines are the Most Effective Drugs for Treating Lambert-Eaton Myasthenic Syndrome With a Focus on Pediatric Lambert-Eaton Myasthenic Syndrome. J Clin Neurol 2024; 20:353-361. [PMID: 38951970 DOI: 10.3988/jcn.2024.0018] [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: 01/09/2024] [Revised: 04/02/2024] [Accepted: 04/12/2024] [Indexed: 07/03/2024] Open
Abstract
In 1983, the first successful trial of 3,4-diaminopyridine (3,4-DAP) in Lambert-Eaton myasthenic syndrome (LEMS) was reported. Efficacy of amifampridine (3,4-DAP and 3,4-diaminopyridine phosphate [3,4-DAPP]) for symptomatic treatment in LEMS was proven by seven randomized studies in 3,4-DAP and two randomized studies in 3,4-DAPP. US Food Drug Administration approved 3,4-DAPP usage for adult LEMS in 2018 and for pediatric LEMS in 2022. Nineteen pediatric LEMS cases were identified in the literature. Compared with adult LEMS, the rate of malignancy is low as expected and the rate of dysautonomia is also low in pediatric LEMS. Unexpected finding is two cases of pediatric LEMS following antecedent infection. Amifampridine can be safely used as long the daily dose is less than 80 mg a day for adult LEMS patients and less than 30 mg a day for pediatric LEMS patients. Amifampridines can be supplemented with a liberal amount of pyridostigmine for long term usage. Amifampridine was used as symptomatic treatment in eight (42%) of 19 pediatric LEMS patients: 3,4-DAP in six and 3,4-DAPP in two patients. The most common practice of 3,4-DAP was a combination with pyridostigmine in four patients. With 3,4-DAP, normal activity was reported in 3 cases and mild to moderate-improvement in other 3 cases. In two patients with 3,4-DAPP, significant improvement in one and no improvement in one. Amifampridines are proven to be effective and safe drugs for the symptomatic treatment without serious side reaction in adults as well as in children as long as the dosage is properly adhered.
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Affiliation(s)
- Shin J Oh
- Department of Neurology, University of Alabama at Birmingham, Birmingham, Alabama, USA.
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Caffarelli C, Paravati F, El Hachem M, Duse M, Bergamini M, Simeone G, Barbagallo M, Bernardini R, Bottau P, Bugliaro F, Caimmi S, Chiera F, Crisafulli G, De Ranieri C, Di Mauro D, Diociaiuti A, Franceschini F, Gola M, Licari A, Liotti L, Mastrorilli C, Minasi D, Mori F, Neri I, Pantaleo A, Saretta F, Tesi CF, Corsello G, Marseglia GL, Villani A, Cardinale F. Management of chronic urticaria in children: a clinical guideline. Ital J Pediatr 2019; 45:101. [PMID: 31416456 PMCID: PMC6694633 DOI: 10.1186/s13052-019-0695-x] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 08/01/2019] [Indexed: 12/12/2022] Open
Abstract
The aim of this guidance is to provide recommendations to clinicians and other interested parties on chronic urticaria in children. The Italian Society for Pediatrics (SIP), the Italian Society for Allergy and Immunology (SIAIP), the Italian Society for Pediatric dermatology (SIDerP) convened a multidisciplinary panel that prepared clinical guidelines for diagnosis and management of chronic urticaria in childhood. Key questions on epidemiology, natural history, diagnosis, and management were developed. The literature was systematically searched and evaluated, recommendations were rated and algorithms for diagnosis and treatment were developed. The recommendations focus on identification of diseases and comorbidities, strategies to recognize triggering factors, improvement of treatment by individualized care.
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Affiliation(s)
- Carlo Caffarelli
- Clinica Pediatrica, Dipartimento Medicina e Chirurgia, Università di Parma, Parma, Italy
| | - Francesco Paravati
- Pediatric Unit, Maternal Infant Department, Azienda Sanitaria Provinciale Crotone, Crotone, Italy
| | - Maya El Hachem
- Dermatology Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Marzia Duse
- Department of Pediatrics, Policlinico Umberto I, Sapienza University of Rome, Rome, Italy
| | | | - Giovanni Simeone
- Primary care Pediatrician, Local Health Unit of Brindisi, Brindisi, Italy
| | - Massimo Barbagallo
- Pediatric Unit, Azienda di rilievo nazionale ARNAS "GARIBALDI", Catania, Italy
| | | | - Paolo Bottau
- Pediatric and Neonatology Unit, Imola Hospital, Imola, BO, Italy
| | - Filomena Bugliaro
- FEDERASMA e Allergie Onlus - Federazione Italiana Pazienti, Prato, Italy
| | - Silvia Caimmi
- Pediatric Clinic, Foundation IRCCS Policlinico San Matteo, University of Pavia, Pavia, Italy
| | - Fernanda Chiera
- Pediatric Unit, Maternal Infant Department, Azienda Sanitaria Provinciale Crotone, Crotone, Italy
| | - Giuseppe Crisafulli
- UO Allergologia, Dipartimento di Pediatria, Università di Messina, Messina, Italy
| | | | - Dora Di Mauro
- Clinica Pediatrica, Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Andrea Diociaiuti
- Dermatology Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | | | - Massimo Gola
- Allergological and Pediatric Dermatology Unit, AUTC and University of Florence, Florence, Italy
| | - Amelia Licari
- Pediatric Clinic, Foundation IRCCS Policlinico San Matteo, University of Pavia, Pavia, Italy
| | - Lucia Liotti
- Department of Pediatrics, Senigallia Hospital, Senigallia, Italy
| | - Carla Mastrorilli
- Department of Pediatrics and Emergency, Pediatric Allergy and Pulmunology Unit, Azienda Ospedaliera-Universitaria "Consorziale-Policlinico", Ospedale Pediatrico Giovanni XXIII, Bari, Italy
| | - Domenico Minasi
- UOC di Pediatria Azienda Ospedaliera "Bianchi-Melacrino-Morelli", Reggio Calabria, Italy
| | - Francesca Mori
- Allergy Unit, Department of Pediatric Medicine, Anna Meyer Children's University Hospital, Florence, Italy
| | - Iria Neri
- Dermatology Unit, University of Bologna, Bologna, Italy
| | - Aurelia Pantaleo
- Clinica Pediatrica, Azienda Ospedaliero-Universitaria di Parma, Parma, Italy
| | - Francesca Saretta
- Pediatric Department, AAS2 Bassa Friulana-Isontina, Palmanova-Latisana, Italy.,Pediatric Allergy Unit, Department of Medicine, Udine, Italy
| | - Carlo Filippo Tesi
- FEDERASMA e Allergie Onlus - Federazione Italiana Pazienti, Prato, Italy
| | - Giovanni Corsello
- Clinica Pediatrica Università degli Studi di Palermo, Palermo, Italy
| | - Gian Luigi Marseglia
- Pediatric Clinic, Foundation IRCCS Policlinico San Matteo, University of Pavia, Pavia, Italy
| | - Alberto Villani
- UOC di Pediatria Generale e Malattie Infettive, Ospedale Pediatrico Bambino Gesù, Rome, Italy
| | - Fabio Cardinale
- Department of Pediatrics and Emergency, Pediatric Allergy and Pulmunology Unit, Azienda Ospedaliera-Universitaria "Consorziale-Policlinico", Ospedale Pediatrico Giovanni XXIII, Bari, Italy.
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Autoimmune comorbidity in chronic spontaneous urticaria: A systematic review. Autoimmun Rev 2017; 16:1196-1208. [PMID: 29037900 DOI: 10.1016/j.autrev.2017.10.003] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Accepted: 08/05/2017] [Indexed: 01/03/2023]
Abstract
BACKGROUND AND OBJECTIVE Numerous autoimmune diseases (AIDs) have been linked to chronic spontaneous urticaria (CSU). Here, we provide the first extensive and comprehensive evaluation of the prevalence of AIDs in patients with CSU and vice versa. METHODS A Pubmed and Google Scholar search was performed to identify studies reporting the prevalence of various AIDs in CSU and vice versa published before April 2017. RESULTS The prevalence of individual AIDs in CSU is increased (≥1% in most studies vs ≤1% in the general population). AIDs with relatively high prevalence in the general population are also quite common in CSU patients, whereas those with low prevalence remain a rare finding in CSU. The rates of comorbidity in most studies were ≥1% for insulin-dependent diabetes mellitus, rheumatoid arthritis (RA), psoriasis and celiac disease (CD), ≥2% for Graves' disease, ≥3% for vitiligo, and ≥5% for pernicious anemia and Hashimoto's thyroiditis. Organ-specific AIDs are more prevalent in CSU than systemic (multiorgan or non organ-specific) AIDs. >2% of CSU patients have autoimmune polyglandular syndromes encompassing autoimmune thyroid disease (ATD) and vitiligo or pernicious anemia. Antithyroid and antinuclear antibodies are the most prevalent AID-associated autoantibodies in CSU. >15% of CSU patients have a positive family history for AIDs. The prevalence of urticarial rash in AID patients is >1% in most studies. This rash is more prevalent in eosinophilic granulomatosis with polyangiitis, ATD, systemic lupus erythematosus, RA and CD. CONCLUSIONS CSU patients have an increased risk of AIDs, especially adult female patients and those with a positive family history and a genetic predisposition for AIDs, who should be screened for signs and symptoms of AIDs.
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Kolkhir P, Pogorelov D, Kochergin N. Chronic spontaneous urticaria associated with vitiligo and thyroiditis (autoimmune polyglandular syndrome IIIC): case series. Int J Dermatol 2017; 56:e89-e90. [PMID: 28188623 DOI: 10.1111/ijd.13538] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 11/21/2016] [Accepted: 11/28/2016] [Indexed: 11/28/2022]
Affiliation(s)
- Pavel Kolkhir
- Department of Dermatology and Venereology, I.M. Sechenov First Moscow State Medical University, Moscow, Russia
| | - Dmitry Pogorelov
- Department of Dermatology and Venereology, I.M. Sechenov First Moscow State Medical University, Moscow, Russia
| | - Nikolay Kochergin
- Department of Dermatology and Venereology, I.M. Sechenov First Moscow State Medical University, Moscow, Russia
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Agarwal S, Lotze TE, Woodbury SL. A 7-year-old child with chronic droopy eyes, weakness in head-neck control, and an abnormal gait. Semin Pediatr Neurol 2014; 21:111-3. [PMID: 25149941 DOI: 10.1016/j.spen.2014.04.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Sonika Agarwal
- Department of Child Neurology, Baylor College of Medicine, Houston, TX.
| | - Timothy E Lotze
- Department of Child Neurology, Baylor College of Medicine, Houston, TX
| | - Suzanne L Woodbury
- Department of Physical Medicine and Rehabilitation, Baylor College of Medicine, Houston, TX
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Verbeek S, Vanakker O, Mercelis R, Lipka AF, Haerynck F, Dullaers M, Verloo P, Van Coster R, Verhelst H. Lambert-Eaton myasthenic syndrome in a 13-year-old girl with Xp11.22-p11.23 duplication. Eur J Paediatr Neurol 2014; 18:439-43. [PMID: 24461257 DOI: 10.1016/j.ejpn.2014.01.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 12/07/2013] [Accepted: 01/05/2014] [Indexed: 01/29/2023]
Abstract
Lambert-Eaton myasthenic syndrome (LEMS) is an autoimmune disease of the presynaptic neuromuscular junction, typically occurring in adults as a paraneoplastic syndrome. Only rare cases have been reported in childhood. In most childhood cases, malignancies have not been detected but a propensity to autoimmune disease was noticed. Nevertheless, little is known about genetic factors that may contribute to the susceptibility of an individual to develop LEMS. We report on a 13-year-old girl, known with the Xp11.22-p11.23 duplication syndrome, who presented with severe non-paraneoplastic LEMS. The potential role of this microduplication syndrome in the development of LEMS is explored. Previous literature review of twelve Xp11.2 duplication syndrome patients showed that three of them suffered from various autoimmune diseases. The common duplicated region in those three patients and the presented case comprises 12 disease-associated genes including the FOXP3 (Forkhead Box P3) and WAS (Wiskott-Aldrich syndrome) gene, both implicated in immune function. However, it is unclear whether increased gene dosage of one or both of these genes can cause susceptibility to autoimmune diseases. In conclusion, the presented case emphasizes that autoimmune disease is a recurrent feature of the Xp11.2 duplication syndrome, which should be considered in the follow-up of these patients. The exact mechanism underlying this autoimmune propensity remains to be elucidated.
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Affiliation(s)
- Sabine Verbeek
- Department of Pediatrics, Division of Pediatric Neurology and Metabolism, Ghent University Hospital, Ghent, Belgium
| | - Olivier Vanakker
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Rudy Mercelis
- Department of Neurology, Antwerp University Hospital, Antwerp, Belgium
| | - A F Lipka
- Department of Neurology, Leiden University Medical Center, The Netherlands
| | - Filomeen Haerynck
- Department of Pediatrics, Division of Immunology, Ghent University Hospital, Ghent, Belgium
| | - Melissa Dullaers
- Department of Pneumology, Laboratory for Immunoregulation and Mucosal Immunology, Ghent University Hospital, Ghent, Belgium
| | - Patrick Verloo
- Department of Pediatrics, Division of Pediatric Neurology and Metabolism, Ghent University Hospital, Ghent, Belgium
| | - Rudy Van Coster
- Department of Pediatrics, Division of Pediatric Neurology and Metabolism, Ghent University Hospital, Ghent, Belgium
| | - Helene Verhelst
- Department of Pediatrics, Division of Pediatric Neurology and Metabolism, Ghent University Hospital, Ghent, Belgium.
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Hajjar M, Markowitz J, Darras BT, Kissel JT, Srinivasan J, Jones HR. Lambert-Eaton syndrome, an unrecognized treatable pediatric neuromuscular disorder: three patients and literature review. Pediatr Neurol 2014; 50:11-7. [PMID: 24138947 DOI: 10.1016/j.pediatrneurol.2013.08.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Revised: 08/02/2013] [Accepted: 08/03/2013] [Indexed: 11/15/2022]
Abstract
BACKGROUND Lambert-Eaton myasthenic syndrome, a presynaptic neuromuscular junction autoimmune disorder, rarely occurs in children. Patients typically present with proximal lower extremity weakness with areflexia. METHODS We report three children presenting between ages 9 and 10 years diagnosed with Lambert-Eaton myasthenic syndrome 2 years, 1 year, and 5 months later, respectively. Their clinical attributes are correlated with nine other pediatric Lambert-Eaton myasthenic syndrome patients found in our literature review. RESULTS These patients were identified as having Lambert-Eaton myasthenic syndrome during their evaluation for proximal weakness. Low-amplitude compound muscle action potentials classically facilitating >100% with voluntary exercise and/or 50 Hz stimulation were essential to diagnosis. Three of the 12 children had associated malignancies, two of them had lymphoproliferative disorders with onset of symptoms more rapid than the rest, and the third had neuroblastoma. The nine nonparaneoplastic Lambert-Eaton myasthenic syndrome patients responded to immunomodulatory therapy with close return to their baseline function. Complete remission no longer necessitating medication was reported in two patients. Follow-up up to 17 years was available on two patients previously reported. CONCLUSION Lambert-Eaton myasthenic syndrome is a diagnosis that must be considered in children presenting with unidentified proximal muscle weakness. In most children, Lambert-Eaton myasthenic syndrome is a primary autoimmune disorder that is treatable. Nevertheless, a search for malignancy is recommended.
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Affiliation(s)
- Mirna Hajjar
- Department of Neurology, Lahey Clinic, Burlington, Massachusetts.
| | - Jennifer Markowitz
- Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Basil T Darras
- Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - John T Kissel
- Department of Neurology, Ohio State University School of Medicine, Ohio
| | | | - H Royden Jones
- Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts; Department of Neurology, Lahey Clinic, Burlington, Massachusetts
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Abstract
Urticaria affects nearly 25% of the population at some time in their lives. In a subset of children, urticaria will develop into a chronic condition that can greatly affect quality of life. Although numerous causes and triggers are proposed for chronic urticaria (CU) in children, ranging from infections, allergens, and medications to physical factors and autoimmune disease, the exact etiology is not always identifiable. Accordingly, a large subset of cases are designated "chronic idiopathic urticaria." Because of the clinical complexities of CU, as well as the confusing literature on this topic, we have developed a conceptual framework based on the cumulative evidence to assist with the categorization, clinical evaluation, and treatment of CU in children.
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Affiliation(s)
| | - Kelly M Cordoro
- Departments of Dermatology.,Pediatrics, University of California at San Francisco, San Francisco, California
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Wang N, Shen N, Vyse TJ, Anand V, Gunnarson I, Sturfelt G, Rantapää-Dahlqvist S, Elvin K, Truedsson L, Andersson BA, Dahle C, Örtqvist E, Gregersen PK, Behrens TW, Hammarström L. Selective IgA deficiency in autoimmune diseases. Mol Med 2011; 17:1383-96. [PMID: 21826374 PMCID: PMC3321806 DOI: 10.2119/molmed.2011.00195] [Citation(s) in RCA: 116] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Accepted: 08/02/2011] [Indexed: 12/12/2022] Open
Abstract
Selective immunoglobulin A deficiency (IgAD) is the most common primary immunodeficiency in Caucasians. It has previously been suggested to be associated with a variety of concomitant autoimmune diseases. In this review, we present data on the prevalence of IgAD in patients with Graves disease (GD), systemic lupus erythematosus (SLE), type 1 diabetes (T1D), celiac disease (CD), myasthenia gravis (MG) and rheumatoid arthritis (RA) on the basis of both our own recent large-scale screening results and literature data. Genetic factors are important for the development of both IgAD and various autoimmune disorders, including GD, SLE, T1D, CD, MG and RA, and a strong association with the major histocompatibility complex (MHC) region has been reported. In addition, non-MHC genes, such as interferon-induced helicase 1 (IFIH1) and c-type lectin domain family 16, member A (CLEC16A), are also associated with the development of IgAD and some of the above diseases. This indicates a possible common genetic background. In this review, we present suggestive evidence for a shared genetic predisposition between these disorders.
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Affiliation(s)
- Ning Wang
- Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska Institutet at Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Nan Shen
- Department of Rheumatology, Renji Hospital, JiaoTong University School of Medicine, Shanghai, China
| | - Timothy J Vyse
- Section of Molecular Genetics and Rheumatology, Hammersmith Hospital, London, United Kingdom
| | - Vidya Anand
- Section of Molecular Genetics and Rheumatology, Hammersmith Hospital, London, United Kingdom
| | - Iva Gunnarson
- Rheumatology Unit, Department of Medicine, Karolinska University Hospital Solna, Stockholm, Sweden
| | - Gunnar Sturfelt
- Department of Rheumatology, Lund University Hospital, Lund, Sweden
| | | | - Kerstin Elvin
- Unit of Clinical Immunology, Department of Clinical Immunology and Transfusion Medicine, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Lennart Truedsson
- Department of Laboratory Medicine, Section of Microbiology, Immunology and Glycobiology, Lund University, Sweden
| | | | - Charlotte Dahle
- Clinical Immunology Unit, Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Eva Örtqvist
- Department of Woman and Child Health, Astrid Lindgren Children’s Hospital, Karolinska University Hospital Solna, Stockholm, Sweden
| | - Peter K Gregersen
- Robert S. Boas Center for Genomics and Human Genetics, Feinstein Institute for Medical Research, Manhasset, New York, United States of America
| | - Timothy W Behrens
- Division of Immunology, Tissue Growth & Repair, Biomarker Discovery and Human Genetics, Genentech, South San Francisco, California, United States of America
| | - Lennart Hammarström
- Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska Institutet at Karolinska University Hospital Huddinge, Stockholm, Sweden
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Abstract
Lambert Eaton myasthenic syndrome (LEMS) is a rare neuromuscular junction disease. Often, the signs and symptoms of LEMS are mistaken for myasthenia gravis and therefore the workup is misdirected. A physician must look for an occult malignancy when the diagnosis is made and then continue to search for a malignancy for at least 5 years after diagnosis. The diagnosis of LEMS can be confirmed with electrophysiologic studies or with serum calcium channel antibodies. In most patients with LEMS, 3,4-diaminopyridine will improve strength. In patients without malignancy, immunosuppressants do have a role in the treatment of LEMS. Patients and physicians must be aware that certain situations and drugs may exacerbate weakness.
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Affiliation(s)
- Maria B Weimer
- Maria B. Weimer, MD Louisiana State University Health Sciences Center, Department of Neurology, 200 Henry Clay Suite 3314, New Orleans, LA 70118, USA.
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Jorgensen GH, Ornolfsson AE, Johannesson A, Gudmundsson S, Janzi M, Wang N, Hammarström L, Ludviksson BR. Association of immunoglobulin A deficiency and elevated thyrotropin-receptor autoantibodies in two Nordic countries. Hum Immunol 2010; 72:166-72. [PMID: 20977916 DOI: 10.1016/j.humimm.2010.10.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2010] [Revised: 09/29/2010] [Accepted: 10/19/2010] [Indexed: 01/01/2023]
Abstract
Immunoglobulin A deficiency (IgAD) is the most common primary immunodeficiency, with suggested association with various types of autoimmunity, including Graves' disease. This study investigated the association of IgAD with elevated thyrotropin-receptor autoantibodies (TRAb). IgA was measured in TRAb-seropositive individuals from both Iceland (N = 299] and Sweden (N = 841]. In addition, TRAb levels were evaluated in 43 Icelandic and 50 Swedish IgAD individuals using Medizym TRA immunoassay, and positive samples were re-evaluated using BRAHMS TRAK human RIA. The IgAD individuals were HLA-genotyped to determine the HLA-B, DR, and DQ alleles. None of the 299 Icelandic TRAb-seropositive individuals had IgAD, whereas, a high prevalence of IgAD (14/841 (1:60)) was observed in the Swedish cohort (p = 0.027). The prevalence of TRAb-seropositivity in IgAD individuals was, however, increased in both cohorts. The HLA-DQ6 allele was associated with TRAb-seronegativity within the Icelandic IgAD cohort (p = 0.037). The prevalence of IgAD in TRAb-seropositive individuals in Sweden is 10 times higher than expected in the general population. Furthermore, TRAb seropositivity is common among IgAD individuals, both in Iceland and Sweden, suggesting a predisposition toward Graves' disease. These findings underline the significant association of IgAD with autoimmunity and its possible association with certain HLA-DQ alleles.
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Cimaz R, Gana S, Braccesi G, Guerrini R. Sydenham's chorea in a girl with juvenile idiopathic arthritis treated with anti-TNFalpha therapy. Mov Disord 2010; 25:511-4. [PMID: 20014056 DOI: 10.1002/mds.22923] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
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Shkalim V, Monselize Y, Segal N, Zan-Bar I, Hoffer V, Garty BZ. Selective IgA deficiency in children in Israel. J Clin Immunol 2010; 30:761-5. [PMID: 20571893 DOI: 10.1007/s10875-010-9438-x] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2010] [Accepted: 06/02/2010] [Indexed: 11/24/2022]
Abstract
IgA deficiency is the most common human primary immune-deficiency. We evaluated the clinical and immunological characteristics of selective IgA deficiency in children in Israel. The study group included 63 children diagnosed with IgA deficiency from 1987 to 2005. Mean follow-up time per child was 10.6 years. Average age at diagnosis was 10.5 years. In one child, the IgA deficiency was transient. Infectious diseases, mainly recurrent pneumonia and ear infection, were common and occurred in 25 patients (39.7%). Allergic diseases were documented in 20 (31.7%) of our patients. Thirteen children (20.6%) had autoimmune diseases. Malignancies were diagnosed in three children (4.8%), an association that has not been reported in previous series. IgA deficiency appears to be a risk factor for infections, allergic diseases, autoimmune conditions, and malignancy.
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Affiliation(s)
- Vered Shkalim
- Department of Pediatrics B, Schneider Children's Medical Center of Israel, Petah Tikva 49202, Israel
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