Any autosomal dominant distal myopathy in which the cause of the disease is a mutation in the CRYAB gene. The disease is MONDO_0012130 (myofibrillar myopathy 2). Also known as: CRYAB autosomal dominant distal myopathy, CRYAB-related myofibrillar myopathy, alpha-B crystallinopathy, autosomal dominant distal myopathy caused by mutation in CRYAB, late-onset distal crystallinopathy, myofibrillar myopathy type 2, myopathy, myofibrillar, type 2.