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The Relationship Between Immune Semaphorins and Myasthenia Gravis
Dilcan Kotan1, Esen Çiçekli2, Özlem Aydemir3
1Neurology Department, Sakarya University Faculty of Medicine, Sakarya, Turkey.
Brain and Behavior
|February 28, 2026
Summary
Immune semaphorin levels, specifically semaphorin 4A and 7A, show potential as biomarkers for diagnosing myasthenia gravis (MG). While semaphorin 4A was lower and semaphorin 7A higher in MG patients, disease stage did not correlate with levels.
Area of Science:
- Immunology
- Neuroscience
- Biomarker Discovery
Background:
- Myasthenia gravis (MG) is an autoimmune disorder with complex immune system involvement.
- Semaphorins are increasingly recognized as potential biomarkers in various autoimmune conditions.
Purpose of the Study:
- To investigate the diagnostic and prognostic roles of specific immune semaphorins (3A, 3F, 4A, 4D, 7A) in myasthenia gravis.
- To evaluate semaphorins as potential biomarkers for MG.
Main Methods:
- Serum semaphorin levels were measured in 41 MG patients and 39 healthy controls.
- Patients were stratified by the Myasthenia Gravis Activities of Daily Living scale.
- Semaphorin levels were analyzed in relation to disease status.
Main Results:
- Semaphorin 4A levels were significantly decreased in MG patients compared to controls.
- Semaphorin 7A levels were significantly elevated in MG patients versus controls.
- No significant correlation was observed between semaphorin levels and MG disease stage.
Conclusions:
- Semaphorin 4A and 7A levels may serve as diagnostic or differential diagnostic markers for MG.
- These findings could inform the development of novel therapeutic strategies targeting semaphorin pathways in autoimmune diseases.
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