Lack of Mutations in POT1 Gene in Selected Families with Familial Non-Medullary Thyroid Cancer

AbstractTo date, the genes involved in familial non-medullary thyroid cancer (FNMTC) remain poorly understood, with the exception of syndromic cases of FNMTC. It has been proposed that germline mutations in telomere-related genes, such asPOT1, described in familial melanoma might also predispose individuals to thyroid cancer, requiring further research. We aimed to identify germline mutations inPOT1 in selected FNMTC families (with at least three affected members) without a history of other cancers or other features, and to describe the clinical characteristics of these families. Sequencing of the 5 ′UTR and coding regions ofPOT1 was performed in seven affected people (index cases) from seven families with FNMTC. In addition, we performed whole-exome sequencing (WES) of DNA from 10 affected individuals belonging to four of these families. We did not find germline variants of interest inPOT1 by Sanger sequencing or WES. We neither found putative causative mutations in genes previously described as candidate genes for FNMTC in the 4 families studied by WES. In our study, no germline potentially pathogenic mutations were detected inPOT1, minimizing the possibilities that this gene could be substantially involved in non-syndromic FNMTC.

Source: Hormones and Cancer - March 13, 2020 Category: Cancer & Oncology Source Type: research