Genome-wide association study of esophageal squamous cell cancer identifies shared and distinct risk variants in African and Chinese populations.
Am J Hum Genet
; 110(10): 1690-1703, 2023 10 05.
Article
em En
| MEDLINE
| ID: mdl-37673066
ABSTRACT
Esophageal squamous cell carcinoma (ESCC) has a high disease burden in sub-Saharan Africa and has a very poor prognosis. Genome-wide association studies (GWASs) of ESCC in predominantly East Asian populations indicate a substantial genetic contribution to its etiology, but no genome-wide studies have been done in populations of African ancestry. Here, we report a GWAS in 1,686 African individuals with ESCC and 3,217 population-matched control individuals to investigate its genetic etiology. We identified a genome-wide-significant risk locus on chromosome 9 upstream of FAM120A (rs12379660, p = 4.58 × 10-8, odds ratio = 1.28, 95% confidence interval = 1.22-1.34), as well as a potential African-specific risk locus on chromosome 2 (rs142741123, p = 5.49 × 10-8) within MYO1B. FAM120A is a component of oxidative stress-induced survival signals, and the associated variants at the FAM120A locus co-localized with highly significant cis-eQTLs in FAM120AOS in both esophageal mucosa and esophageal muscularis tissue. A trans-ethnic meta-analysis was then performed with the African ESCC study and a Chinese ESCC study in a combined total of 3,699 ESCC-affected individuals and 5,918 control individuals, which identified three genome-wide-significant loci on chromosome 9 at FAM120A (rs12379660, pmeta = 9.36 × 10-10), chromosome 10 at PLCE1 (rs7099485, pmeta = 1.48 × 10-8), and chromosome 22 at CHEK2 (rs1033667, pmeta = 1.47 × 10-9). This indicates the existence of both shared and distinct genetic risk loci for ESCC in African and Asian populations. Our GWAS of ESCC conducted in a population of African ancestry indicates a substantial genetic contribution to ESCC risk in Africa.
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Bases de dados:
MEDLINE
Assunto principal:
Neoplasias Esofágicas
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Carcinoma de Células Escamosas
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Carcinoma de Células Escamosas do Esôfago
Tipo de estudo:
Etiology_studies
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Observational_studies
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Risk_factors_studies
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Systematic_reviews
Limite:
Humans
Idioma:
En
Revista:
Am J Hum Genet
Ano de publicação:
2023
Tipo de documento:
Article