Idiotype [13], RHAMM [36], DKK1 [39, 40], and HM1.24 [46] are expressed in almost all MM patients; MUC1 [18], WT1 [23], and MAGE-C1 [27–30] are expressed in the majority of MM patients and ropporin is detected in about 44% of MM patients [33]. The gene discussed is MAGEC1; the disease is Miyoshi myopathy.