DAG1 and neuromuscular disease caused by qualitative or quantitative defects of alpha-dystroglycan: Blotting with antibodies against the core peptide of αDG (core-αDG) and β-dystroglycan (βDG) indicated similar expression across all samples, demonstrating that the dystroglycan proteins are expressed but that αDG is hypoglycosylated in α-dystroglycanopathy patient hiPSCs (Fig. 3B).