Although we found increased IFN-γ mRNA level in the intestine and elevated IL-6 and IFN-γ serum levels in hosts receiving IL-17C−/− graft, decreased IL-6 and IFN-γ productions were detected in hepatitis with IL-17C deficiency (26). The gene discussed is IFNG; the disease is hyperinsulinemic hypoglycemia, familial, 4.