Insulinoma Associated Protein 2 (INSM2)

Insulinoma Associated 2 may be associated with the transformation of neuroendocrine cells.Several tumor cell lines of neuroendocrine origin including pheochromocytoma, medullary thyroid carcinoma, insulinoma, pituitary tumor, and small cell lung carcinoma. Not found in any of the normal tissues tested.

Insulinoma-associated protein 2 (IA-2) is the major autoantigen that contributes to the pathogenesis of type 1 diabetes (T1D). IA-2-deficient (IA-2^-/-) mice showed impaired insulin secretion after intraperitoneal injection of glucose as well as elevated glucose level in a glucose tolerance test. Despite the fact that 70% of newly diagnosed T1D patients have an antibody against IA-2, the role of IA-2 in the pathogenesis of T1D is largely unknown.