Evidence map›Paper›PMID 40634627›Full record

SynthesisJournal of neurology2025

Familial myasthenia gravis: characterization of an Israeli cohort and systematic review of the literature.

Mark A Hellmann, Israel Steiner, Maor Mermelstein, Itzhak Friedman, Adi Wilf-Yarkoni, Itay Lotan

Abstract readSystematic Review
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In one paragraph

Synthesis in Journal of neurology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0citing papers in PubMed
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1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

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5 · Who and what money

Authors and funding

6 authors.

Mark A Hellmann *Department of Neurology, Rabin Medical Center, Beilinson Hospital, Beilinson Campus, 49100, Petach Tikva, Israel.
Israel Steiner *Department of Neurology, Rabin Medical Center, Beilinson Hospital, Beilinson Campus, 49100, Petach Tikva, Israel.
Maor MermelsteinDepartment of Neurology, Rabin Medical Center, Beilinson Hospital, Beilinson Campus, 49100, Petach Tikva, Israel.
Itzhak FriedmanDepartment of Neurology, Rabin Medical Center, Beilinson Hospital, Beilinson Campus, 49100, Petach Tikva, Israel.
Adi Wilf-YarkoniDepartment of Neurology, Rabin Medical Center, Beilinson Hospital, Beilinson Campus, 49100, Petach Tikva, Israel.
Itay LotanDepartment of Neurology, Rabin Medical Center, Beilinson Hospital, Beilinson Campus, 49100, Petach Tikva, Israel. lotan.itay1@gmail.com.ORCID http://orcid.org/0000-0002-4015-9783

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMyasthenia gravis (MG) is an autoimmune disorder of the neuromuscular junction, most commonly associated with autoantibodies against the acetylcholine receptor (AChR). While familial clustering of autoimmune MG (fMG) has been described, its prevalence and clinical characteristics remain uncertain. This study aimed to characterize autoimmune fMG cases in an Israeli cohort and describe global data through a systematic literature review.

methodsWe retrospectively analyzed the medical records of MG patients treated at Rabin Medical Center from 2000 to 2022. The clinical and demographic features of autoimmune fMG cases-defined by compatible clinical, serological, and electrophysiological features-were compared to those of sporadic MG. Additionally, a systematic review of published autoimmune fMG cases was performed according to PRISMA guidelines.

resultsAmong 281 MG patients, 16 patients (5.7%) from eight families met criteria for autoimmune fMG. Compared to sporadic MG, fMG cases had a significantly younger age of onset (median 44.5 vs. 58 years, p = 0.04) and more frequently presented with severe generalized disease (MGFA class IV-V, 43.8% vs. 15%, p = 0.008). The antibody profiles, sex distribution, ocular involvement, and comorbid autoimmune diseases did not differ significantly. All fMG patients responded to immunotherapy. The systematic review identified 73 additional fMG cases, with similar trends toward earlier onset and generalized presentation. Patients with fMG in our cohort had higher rates of severe initial presentation (43.8% vs. 16.4%, p = 0.03) and underwent thymectomy less frequently (19% vs. 49.3%, p = 0.03).

conclusionsAutoimmune familial MG occurs in 5-6% of MG cases and is associated with a younger onset and more severe initial presentation compared to sporadic MG, but shows similar long-term treatment response. These findings suggest that genetic factors may contribute to disease susceptibility and phenotypic expression in familial MG, highlighting the need for further research into the underlying genetic and immunological mechanisms.

Indexed as

Myasthenia GravisAdultAgedAge of OnsetAutoantibodiesCohort StudiesFemaleHumansIsraelMaleMiddle AgedRetrospective StudiesYoung AdultAutoantibodiesAutoimmuneFamilialGeneticHereditaryMyasthenia gravisPathogenesis

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.