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.
Learn more in our guide:
GLP-1 and Thyroid Health: What Indian Patients Should Know →
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