Age at onset of EOMG was significantly different when compared with thymoma-associated MG (28,9 ± 11,5 vs 45,0 ± 16,3 p = 0,000038), seronegative MG (28,9 ± 11,5 vs 48,2 ± 16,5 p < 0,00001) and anti-MuSK positive MG (28,9 ± 11,5 vs 44,8 ± 16,8 p = 0,00051). The gene discussed is MUSK; the disease is myasthenia gravis.