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Cancer Genet. 2018 Feb;221:46-52. doi: 10.1016/j.cancergen.2017.11.011. Epub 2017 Dec 23.

Familial Esophageal Squamous Cell Carcinoma with damaging rare/germline mutations in KCNJ12/KCNJ18 and GPRIN2 genes.

Author information

1
Medical Genetics Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
2
Research Center for Medical Genetics RAMS, Moscow, Russia.
3
Stem Cell and Regenerative Medicine Research Department, Iranian Academic Center for Education, Culture and Research (ACECR), Mashhad Branch, Mashhad, Iran.
4
Canada's Michael Smith Genome Sciences Centre, BC Cancer Agency, Vancouver, BC, Canada.
5
Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow, Russia.
6
Medical Genetics Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran; Division of Human Genetics, Immunology Research Center, Avicenna Research Institute, Mashhad University of Medical Sciences, Mashhad, Iran. Electronic address: Abbaszadeganmr@mums.ac.ir.

Abstract

In Iran, esophageal cancer is the fourth common cancers in women and sixth common cancers in men. Here we evaluated the importance of familial risk factors and the role of genetic predisposition in Esophageal Squamous Cell Carcinoma (ESCC) using Whole-Exome Sequencing (WES). Germline damaging mutations were identified in WES data from 9 probands of 9 unrelated ESCC pedigrees. Mutations were confirmed with Sanger sequencing and evaluated amplification-refractory mutation system-Polymerase Chain Reaction (ARMS-PCR) in 50 non-related ethnically matched samples and in complete genomics database. Sixteen candidate variants were detected in ESCC 9 probands. Four of these 16 variants were rare damaging mutations including novel mutations in KCNJ12/KCNJ18, and GPRIN2 genes. This WES study in Iranian patients with ESCC, provides insight into the identification of novel germline mutations in familial ESCC. Our data suggest an association between specific mutations and increased risk of ESCC.

KEYWORDS:

Familial Esophageal Squamous Cell Carcinoma; Whole-Exome Sequencing; environmental factor; genetic predisposition; germline mutation

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