Author:
Garcia Felipe Antonio de Oliveira,de Andrade Edilene Santos,de Campos Reis Galvão Henrique,da Silva Sábato Cristina,Campacci Natália,de Paula Andre Escremin,Evangelista Adriane Feijó,Santana Iara Viana Vidigal,Melendez Matias Eliseo,Reis Rui Manuel,Palmero Edenir Inez
Abstract
AbstractFamilial colorectal cancer type X (FCCTX) is a heterogeneous colorectal cancer predisposition syndrome that, although displays a cancer pattern similar to Lynch syndrome, is mismatch repair proficient and does not exhibit microsatellite instability. Besides, its genetic etiology remains to be elucidated. In this study we performed germline exome sequencing of 39 cancer-affected patients from 34 families at risk for FCCTX. Variant classification followed the American College of Medical Genetics and Genomics (ACMG) guidelines. Pathogenic/likely pathogenic variants were identified in 17.65% of the families. Rare and potentially pathogenic alterations were identified in known hereditary cancer genes (CHEK2), in putative FCCTX candidate genes (OGG1 and FAN1) and in other cancer-related genes such as ATR, ASXL1, PARK2, SLX4 and TREX1. This study provides novel important clues that can contribute to the understanding of FCCTX genetic basis.
Funder
Barretos Cancer Hospital
Ministry of Health
São Paulo State Research Support Foundation
National Council for Scientific and Technological Development
Publisher
Springer Science and Business Media LLC
Cited by
11 articles.
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