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Multiple endocrine neoplasia type 2A* (MEN 2A) * is is an inherited disorder caused by mutations in the RET gene. Individuals with MEN 2A are at high risk of developing medullary carcinoma of the thyroid. About 50% will develop pheochromocytoma, a tumor of the adrenal glands which may increase blood pressure. Individuals with MEN 2A are also at increased risk for parathyroid adenoma or hyperplasia (overgrowth of the parathyroid gland). Occasionally an itchy skin condition called cutaneous lichen amyloidosis also occurs in people with type 2A disease. The condition is inherited in an autosomal dominant manner.
Source: GARD Last updated on 05-01-20
Multiple endocrine neoplasia type 2 affects an estimated 1 in 30,000 to 35,000 people. Among the subtypes of multiple endocrine neoplasia type 2, type 2A is the most common form, making up 70-80% of cases.
Last updated on 05-01-20
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