DMD and hyperinsulinemic hypoglycemia, familial, 4: Immunostaining showed complete loss of dystrophin expression in 23/34 (67%) cases, reduced and patchy dystrophin expression at least on one domain in 3/34 (9%) cases, sarcoglycan (α,β,γ,δ) deficiency in 4/34 cases (12%), β sarcoglycan deficiency in 1/34 cases (3%), α,β sarcoglycan deficiency in 1/34 cases (3%) and no deficiency in 2/34 cases (6%) [Figs. 3 and 4].