Calpain-3-Related Limb-Girdle Muscular Dystrophy D4, also known as limb-girdle muscular dystrophy type d4, is related to muscular dystrophy, limb-girdle, autosomal dominant 4. An important gene associated with Calpain-3-Related Limb-Girdle Muscular Dystrophy D4 is CAPN3 (Calpain 3).