Shortly thereafter, RYR1 mutations were identified in patients with central core disease (CCD) and in other myopathies collectively referred to as RYR1‐related myopathies which include multiminicore disease (MmD), centronuclear myopathy (CNM), congenital fibre‐type disproportion (CFTD) and dusty core disease (DuCD). This evidence concerns the gene RYR1 and autosomal dominant centronuclear myopathy.