PMID: 16532227Mar 15, 2006Paper

Impact of RET proto-oncogene analysis on the clinical management of multiple endocrine neoplasia type 2

Clinics
Sergio P de Almeida ToledoDelmar Lourenço

Abstract

Multiple endocrine neoplasia type 2 (MEN2) is an autosomal dominant disease characterized by the presence of medullary thyroid carcinoma, primary hyperparathyroidism, and pheochromocytoma. Multiple endocrine neoplasia type 2 is still an underdiagnosed, or late-diagnosed condition in many areas of the world. Since 1993, when the first missense RET proto-oncogene (RET) mutations were reported in MEN2, up to 46 different RET-causing disease mutations have been described. Since a strong genotype-phenotype correlation exists for MEN2, the detection of RET mutations has produced a major impact in early recognition and treatment of MTC and MEN2. Presently, RET mutation analysis should be performed for all MEN2 cases and their at-risk familial relatives. Further, prophylactic total thyroidectomy is indicated in all cases harboring activating gametic RET mutations. In most RET mutation carriers, prophylactic total thyroidectomy is indicated at ages as early as a few months to 4 years of age, promoting longer survival and improvement of quality of life or even definitive cure. We discuss the large impact of RET proto-oncogene analysis on the clinical management of MEN2 and the role of early RET molecular DNA diagnosis in providing clinic...Continue Reading

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