Molekuláris genetikai módszerekkel igazolt ret-protoonkogén mutáció magyar MEN2A család esetében.

Translated title of the contribution: Ret-protooncogene mutation, verified by molecular genetic methods, in a Hungarian MEN Type 2a family

P. Igaz, K. Rácz, M. Tóth, E. Cserepes, O. Esik, R. Kiss, F. Perner, E. Gláz, Z. Tulassay

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Multiple endocrine neoplasia Type 2 (MEN2) is a hereditary tumour syndrome characterized by the association of medullary thyroid cancer, phaeochromocytoma and hyperparathyroidism. It is inherited as an autosomal dominant trait. During the past few years the cloning of the gene responsible for the syndrome, the ret protooncogene, made the molecular genetic diagnosis of the disease possible. In this study we demonstrate the results of the MEN2 mutation analysis performed in three members of a Hungarian MEN2A family. The mutation analysis was carried out according to the method of Dr. W. Hoppner's Laboratory (Hamburg) that is the main centre for MEN2 genetic diagnosis in Germany. Two Members of the family are affected, one suffered from both medullary thyroid cancer and phaeochromocytoma, the other (the first patient's daughter) had only medullary thyroid cancer. We found a ret exon 11 codon 634 mutation, that resulted in the change of TGC to TAC, a cysteine-tyrosine amino acid exchange. We found no mutation in the youngest member of the family. This result is of great clinical significance, because the carrier status of this individual can thus be excluded and, therefore, there is no need for prophylactic thyroidectomy and further clinical screening tests. As molecular genetic diagnosis of MEN2 becomes possible, the uncertain clinical examinations used for MEN2 diagnosis seems to be less important.

Original languageHungarian
Pages (from-to)355-357
Number of pages3
JournalOrvosi hetilap
Volume140
Issue number7
Publication statusPublished - Feb 14 1999

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ASJC Scopus subject areas

  • Medicine(all)

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