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eQTL Set-Based Association Analysis Identifies Novel Susceptibility Loci for Barrett Esophagus and Esophageal Adenocarcinoma.
- Source :
- Cancer Epidemiology, Biomarkers & Prevention; Sep2022, Vol. 31 Issue 9, p1735-1745, 11p
- Publication Year :
- 2022
-
Abstract
- Background: Over 20 susceptibility single-nucleotide polymorphisms (SNP) have been identified for esophageal adenocarcinoma (EAC) and its precursor, Barrett esophagus (BE), explaining a small portion of heritability. Methods: Using genetic data from 4,323 BE and 4,116 EAC patients aggregated by international consortia including the Barrett's and Esophageal Adenocarcinoma Consortium (BEACON), we conducted a comprehensive transcriptome-wide association study (TWAS) for BE/EAC, leveraging Genotype Tissue Expression (GTEx) gene-expression data from six tissue types of plausible relevance to EAC etiology: mucosa and muscularis from the esophagus, gastroesophageal (GE) junction, stomach, whole blood, and visceral adipose. Two analytical approaches were taken: standard TWAS using the predicted gene expression from local expression quantitative trait loci (eQTL), and set-based SKAT association using selected eQTLs that predict the gene expression. Results: Although the standard approach did not identify significant signals, the eQTL set-based approach identified eight novel associations, three of which were validated in independent external data (eQTL SNP sets for EXOC3, ZNF641, and HSP90AA1). Conclusions: This study identified novel genetic susceptibility loci for EAC and BE using an eQTL set-based genetic association approach. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10559965
- Volume :
- 31
- Issue :
- 9
- Database :
- Supplemental Index
- Journal :
- Cancer Epidemiology, Biomarkers & Prevention
- Publication Type :
- Academic Journal
- Accession number :
- 159018625
- Full Text :
- https://doi.org/10.1158/1055-9965.EPI-22-0096