Korean J Med.
2006 Apr;70(4):448-454.
A family of multiple endocrine neoplasia type 2A associated with a C618R mutation in RET proto-oncogene
- Affiliations
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- 1Department of Internal Medicine, Kosin University College of Medicine, Busan, Korea. parkjp@ns.kosinmed.or.kr
Abstract
- Medullary thyroid carcinoma (MTC) is a relatively rare malignant thyroid disease that accounts for approximately 1% to 5% of all thyroid carcinomas. MTC occurs as a sporadic disease and as an inherited disease with the multiple endocrine neoplasia type 2A (MEN2A), MEN2B, and familial non-MEN medullary carcinoma (FMTC). MEN2A is characterized by MTC, pheochromocytoma, and parathyroid adenoma. The mutation of RET proto-oncogene plays an important role in MEN2A syndromes. Recently the authors diagnosed MEN2A patient and screened his family with thyroid ultrasonogram and RET proto-oncogene analysis. A genetic analysis of the peripheral leukocyte showed a codon 618 mutation (Cys618Arg) at exon 10 of the RET proto-oncogene in a family presenting third generations from age 7 to age 56 years. We report this case of MEN2A with a review of the related literatures.
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