SGCA and neuromuscular disease caused by qualitative or quantitative defects of dysferlin: In a study performed on 20 Turkish patients, calpainopathy was the most prevalent form, and dysferlinopathy was the least form of LGMDs, and among sarcoglycanopathies, the mutation in the SGCG gene was the most common and in the SGCA gene was the least common form [19].