MEN2

Short answer

MEN2 is a rare inherited syndrome causing medullary thyroid cancer, phaeochromocytoma, and hyperparathyroidism due to RET gene mutations.

In one sentence for patients

Full definition
MEN2 is a rare inherited syndrome causing medullary thyroid cancer, phaeochromocytoma, and hyperparathyroidism due to RET gene mutations.

Family history of MEN2 or medullary thyroid carcinoma contraindicates GLP-1 medicines. Genetic counselling may be appropriate when history is uncertain. In India, these concepts appear in RSSDI and ICMR guidance for type 2 diabetes and obesity care—always confirm details with your prescribing physician.

Dr. Ananya Mehta

Medically reviewed

Dr. Ananya Mehta, MD, DM Endocrinology

Consultant Endocrinologist, India

This article has been reviewed by our medical advisory team, including endocrinologists, internal medicine specialists, and cardiologists, and is based on current scientific evidence and Indian clinical guidelines. Last reviewed: June 2026.

Last medically reviewed: Jun 15, 2026

Editorial policy · Medical advisory team

Related terms