NF1 and Miyoshi myopathy: As observed in CM and MM, NF1 mutations (7.2%, 6.5%) were mainly non‐clustering LoF mutations (Figure S1a) and loss also occurred by CNA (HD: 3.2%, 0%; LoH: 9.6%, 2.4%) and SV (2.3%) (Table 2; Figure S2a).