Author/Editor | Zupan, Andrej; Glavač, Damjan | |
Title | The development of rapid and accurate screening test for RET hotspot somatic and germline mutations in MEN2 syndromes | |
Type | članek | |
Publication year | 2015 | |
ISSN | 0014-4800 - Experimental and molecular pathology | |
Language | eng | |
Abstract | Medullary thyroid carcinoma (MTC) is a rare endocrine malignancy with distinctive features separating it from other thyroid cancers. Cancer may be sporadic or occur as a consequence of the hereditary syndrome called multiple endocrine neoplasia type 2 (MEN2) with three distinct phenotypes in MEN2A, MEN2B and FMTC. Each variant of MEN 2 results from different RET gene mutation, with a good genotype-phenotype correlation. Goal of the study was to develop a fast and accurate screening method for a reliable detection of hot-spot RET germline and sporadic tumor mutations. From a cohort of 191 patients with MTC and their relatives, 38 tested positive and 31 tested negative for a germline or somatic tumor RET mutation were selected. A positive HRM mutation pattern was detected in all mutation-positive patients and altogether the method was able to clearly differentiate between twenty different genotypes. A novel germline variant p. Ala639Thr was detected in MTC patient, which was determined to be likely benign. Analytical specificity was determined to be 98.6% and a sensitivity threshold was determined to be 30%. The fast and accurate HRM method reduces the turnaround time providing fast and important information, especially when targeted anti-tyrosine kinase therapy on tumor samples is considered. Overall, we developed a high-throughput, accurate and cost-effective approach for the detection of RET germline and sporadic tumor mutations. | |
Keywords | multiple endocrine neoplasia somatic and germline mutations MEN2 syndromes multiple endokrine neoplazije somatske in reproduktivne mutacije |