-All 17 patients with MG had an active EBV infection, while none of the 6 people from the control group was infected.-In 12 patients’ thymuses, cells expressing EBER were detected, and in 16, EBV latency proteins (EBNA2, LMP1, and LMP2A)were detected. This evidence concerns the gene PDLIM7 and myasthenia gravis.