IL22 and hyperinsulinemic hypoglycemia, familial, 4: In cerulein‐induced chronic pancreatitis, IL‐22 administration with adenovirus ameliorated damage,86, 87 and IL‐22 deficiency in IL‐22 KO mice or blocking endogenous IL‐22 with monoclonal anti‐IL‐22 was associated with worse acinar damage.87