RYR1 and neuromuscular disease caused by qualitative or quantitative defects of dystrophin: As we previously described [6], the concentric fatty infiltration pattern was rarely observed in other muscular dystrophies including dystrophinopathies [13], laminopathies [25], congenital muscular dystrophy with rigid spine syndrome [26], collagen VI-related myopathy [11], RYR1-related myopathies [27], Emery-Dreifuss muscular dystrophy [28], and dysferlinopathy [12].