Multiple endocrine neoplasia type 1 ATR. The exact function of MEN1 and the protein, menin, produced by this gene is not known, but following the inheritance rules of the "two-hit hypothesis" indicates that it acts as a tumor suppressor. In a diagnostic workup individuals with a combination of endocrine neoplasias suggestive of the "MEN1 syndrome" are recommended to have a mutational analysis of the MEN1 gene if additional diagnostic criteria are sufficiently met, mainly including: Multiple endocrine neoplasia or MEN is part of a group of disorders that affect the body's network of hormone-producing glands (the endocrine system). Hormones are chemical messengers that travel through
Multiple endocrine neoplasia is a genetic disorder characterized by endocrine neoplastic features involving endocrine glands that overlap with those involved in MEN1 or MEN2. Percentages in table below refer to how large fraction of people with the MEN type develop the neoplasia type. <nowiki>*</nowiki>- of patients with MEN1 and gastrinoma FMTC = familial medullary thyroid cancer MEN 2B is sometimes known as MEN 3 and the designation varies by institution (c.f. www.ClinicalReview.com). Although a variety of additional eponyms have been proposed for MEN2B (e.g. Williams-Pollock syndrome, Gorlin-Vickers syndrome, and Wagenmann–Froboese syndrome), none ever gained sufficient traction to merit continued use and, indeed, are