KCNJ2 and inborn error of immunity: Propanoate metabolism, butanoate metabolism, DNA replication, and primary immunodeficiency were significantly enriched in the high KCNJ2 subgroup, while the complement and cohesive cascades, phenylalanine metabolism, and biosynthesis of lactose and neolactone series of glycosphingolipids were significantly enriched in the low KCNJ2 subgroup.