G6PD and hyperinsulinemic hypoglycemia, familial, 4: All G6PD-n individuals were wild type for both the G6PD G202A and A376G allele, most (15 of 18) G6PD-d individuals had SNPs for the G202A and A376G allele and had partial G6PD deficiency, and 3 of 18 G6PD-d individuals were identified as wild type but had total G6PD deficiency according to semiquantitative spectrophotometry.