The sample included patients with the following subtypes of MG: 36 with ocular MG (14 females, 22 males), 40 EOMG (36 females, 4 males), 72 LOMG (17 females, 55 males), 25 thymoma-associated MG (15 females, 10 males), 14 anti-MuSK positive (10 females, 4 males) and 21 double seronegative (12 females, 9 males). The gene discussed is MUSK; the disease is myasthenia gravis.