RNF213 and multiminicore myopathy: In addition to RNF213 p.R4810K, other rare mutations in RNF213 have been found in Asian and Caucasian patients with MMD, including p.M3891V, p.I4076V, and p.V4567M (in the Japanese population)106, 113; p.A4399T, p.D4013N, p.E4950D, pD4863N, and more than 30 other mutations in the Chinese population40, 100, 126; and p.K4115del, p.S4118F, p.D4013N, and more than 12 other mutations in Western populations.