KDM6A and hyperinsulinemic hypoglycemia, familial, 4: Further pathway analysis reveals that alanine, aspartate, and glutamate metabolism may be the most important metabolic pathways and that altered metabolites involved in this pathway, especially D‐aspartate, N‐acetylaspartylglutamate, L‐glutamate, and argininosuccinic acid, may be potential mechanisms for the neurodevelopmental deficits induced by UTX deficiency.