ALDH3A2 and hyperinsulinemic hypoglycemia, familial, 4: Biochemical and molecular analysis previously had shown FALDH deficiency in fibroblasts, and compound heterozygosity for two pathogenic variants in the ALDH3A2 gene, namely, c.551C>T (p.[Thr184Met]) and c.943C>T (p.[Pro315Ser]).