IL23R and hyperinsulinemic hypoglycemia, familial, 4: Patients with IL-12p40, IL-12Rβ1, or IL-23R deficiency exhibit normal levels of circulating leukocytes from various subsets, including cell types that typically express IL-23R, such as NK, iNKT, mucosal-associated invariant T (MAIT), Vδ2+ γδ T, TH1, TH17, and TH1* cells.