Calcium‐independent phospholipase A2γ (PLA2G6), fatty acid elongase ELOVL4 (ELOVL4), cytochrome P450 hydroxylase (CYP2U1), GPI‐anchor synthesis pathway (PGAP1), phospholipase A1 (DDHD2), arylsulfatase family member I (ARSI), phospholipase A1 (DDHD1), fatty acid‐2 hydroxylase (FA2H), neuropathy target esterase (PNPLA6), nonlysosomal glucosidase 2 (GBA2), GM2 synthase deficiency (B46ALNT1), serine active site containing 1 (SERAC1),21 ethanolaminephosphotransferase 1 (EPT1)30. The gene discussed is DDHD2; the disease is hyperinsulinemic hypoglycemia, familial, 4.