SEMA3A and myasthenia gravis: This study investigated the role of immune semaphorins, namely semaphorins 3A, 3F, 4A, 4D, and 7A, in the diagnosis and prognosis of MG and their potential as biomarkers.<h4>Methods</h4>Serum levels of semaphorin 3A, 3F, 4A, 4D, and 7A were compared between 41 patients with MG and 39 healthy controls.