During the examination of the DMD/BMD cohort using a panel consisting of 31 genes, causative nucleotide sequence variants in the following 16 genes were identified in 95 (9%) patients from 94 families: CAPN3—3.3%, ANO5—1.2%, FKRP—1.0%, POMT1—1.0%, LMNA—0.9%, SGCA—0.7%, EMD—0.3%, DYSF, SGCB, SGCD, SGCG, GNE, GAA, CRPPA, POMGNT1, CAV3 < 0.1% each. The gene discussed is CAPN3; the disease is Duchenne muscular dystrophy.