We have analyzed the expression levels of the ASF1B, CD82B, CRISP3, FN1, MEF2B, PD-L1, PPARγ, TERT, TIMP1, TOP2A, and TP53 genes in bone marrow samples collected from MM patients with favorable and poor prognoses as well as patients being examined for NCBD. The gene discussed is MEF2B; the disease is Miyoshi myopathy.