As shown in Figure 2c expression of ABCC8:p.Gly1401Arg in COSm6 cells showed non‐trafficking KATP channel complexes, supporting a recessive mode of action and phenotype testing in the carrier mother demonstrated no fasting or protein‐induced hypoglycemia, also consistent with a recessive mutation (data not shown). The gene discussed is ABCC8; the disease is Hypoglycemia.