Individual gene performances (using RWR) for this sign varied from best prediction (rank = 1) for IVD (isovaleryl-CoA dehydrogenase) causing isovaleric acidemia, to worst (rank = 7525) for GK (glycerol kinase) causing glycerol kinase deficiency. Here, IVD is linked to hyperinsulinemic hypoglycemia, familial, 4.