Multiple endocrine neoplasia type 1 is one of a group of disorders, the multiple endocrine neoplasias, that affect the endocrine system through development of neoplastic lesions in pituitary, parathyroid gland and pancreas. Wikipedia

Autosomal dominant disease that has material basis in a mutation in the MEN1 tumor suppressor gene and is characterized by over active endocrine glands frequently involving tumors of the parathyroid glands, the pituitary gland, and the pancreas Wikidata