Insulin allergy resolution following pancreas transplantation alone.

Clinically significant immunological reactions to exogenous insulin are classified as local or generalized. Most of the insulin allergies are local reactions which usually improve or resolve spontaneously. Generalized allergic reactions to insulin range in severity from simple urticaria to life-threatening anaphylaxis. Most of the allergic reactions to exogenous insulin are antibody-mediated reactions to antigens such as zinc, protamine, non-insulin proteins, and aggregates of insulin molecules as well as animal antigens. Immunologic reactions to endogenous insulin usually result in insulin resistance. Herein, we report a case in which systemic insulin allergy was intractable, thus requiring a pancreas transplantation which is the first of its case according to the International Pancreas Transplant Registry/United Network for Organ Sharing (IPTR/UNOS) Registry.