Although mutations in KIT Proto-Oncogene, Receptor Tyrosine Kinase (KIT), Neuroblastoma RAS Viral Oncogene Homolog (NRAS), B-Raf Proto-Oncogene, Serine/Threonine Kinase (BRAF), neurofibromatosis type-1 (NF1), and Splicing Factor 3b, Subunit 1 (SF3B1) have been associated with MM development, their exact mechanisms remain incompletely understood. Here, NRAS is linked to Miyoshi myopathy.