Qualitative or Quantitative Defects of Beta-Sarcoglycan is related to muscular dystrophy, limb-girdle, autosomal recessive 4 and muscular dystrophy, limb-girdle, autosomal recessive 1. An important gene associated with Qualitative or Quantitative Defects of Beta-Sarcoglycan is SGCB (Sarcoglycan Beta).