The sample included patients with the following subtypes of MG: 20 with ocular MG (3 females, 17 males), 30 EOMG (25 females, 5 males), 37 LOMG (14 females, 23 males), 15 thymoma-associated MG (9 females, 6 males), 12 anti-MuSK positive (10 females, 2 males), and 17 double seronegative (10 females, 7 males). This evidence concerns the gene MUSK and thymoma.