Interphase FISH with probes for 13q14 (LSI RB-1), 14q32 (LSI IGHC/IGHV), 1q21(LSI CKS1B), and 17p13(LSI TP53) were performed in paired CD138-positve PCs and CD138-negative MM-MSCs (n = 6). The gene discussed is CKS1B; the disease is Miyoshi myopathy.