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Limb-girdle muscular dystrophy type 2A (LGMD2A) is an autosomal recessive limb-girdle muscular dystrophy characterized by progressive, symmetrical weakness of the proximal limb and girdle muscles (mainly those around the hips and shoulders) without heart involvement or intellectual disability. The condition is caused by genetic changes in the CAPN3 gene. Type 2A is the most common form of limb-girdle muscular dystrophy, accounting for about 30 percent of cases. LGMD2A is also known as primary calpainopathy. Calpainopathies are diseases caused by genetic changes in the CAPN3 gene and can be autosomal recessive or autosomal dominant. Pelvifemoral limb-girdle muscular dystrophy (also known as Leyden-Mobius LGMD) is the most frequently observed subtype. In these cases, muscle weakness is first evident in the pelvic girdle and later in the shoulder girdle. In most cases, muscle weakness is first evident in the shoulder girdle and later in the pelvic girdle; HyperCKemia is usually observed in children or young individuals. In most cases, those affected do not have symptoms, just high levels of creatine kinase in their blood.