Abstract:
BACKGROUND:Studies on genetic effects of coffee consumption are scarce for Asian populations. We conducted a genome-wide association study (GWAS) of habitual coffee consumption in Japan using a self-reporting online survey. RESULTS:Candidate genetic loci associated with habitual coffee consumption were searched within a discovery cohort (N = 6,264) and confirmed in a replication cohort (N = 5,975). Two loci achieved genome-wide significance (P < 5 × 10- 8) in a meta-analysis of the discovery and replication cohorts: an Asian population-specific 12q24 (rs79105258; P = 9.5 × 10- 15), which harbors CUX2, and 7p21 (rs10252701; P = 1.0 × 10- 14), in the upstream region of the aryl hydrocarbon receptor (AHR) gene, involved in caffeine metabolism. Subgroup analysis revealed a stronger genetic effect of the 12q24 locus in males (P for interaction = 8.2 × 10- 5). Further, rs79105258 at the 12q24 locus exerted pleiotropic effects on body mass index (P = 3.5 × 10- 4) and serum triglyceride levels (P = 8.7 × 10- 3). CONCLUSIONS:Our results consolidate the association of habitual coffee consumption with the 12q24 and 7p21 loci. The different effects of the 12q24 locus between males and females are a novel finding that improves our understanding of genetic influences on habitual coffee consumption.
journal_name
BMC Genetjournal_title
BMC geneticsauthors
Jia H,Nogawa S,Kawafune K,Hachiya T,Takahashi S,Igarashi M,Saito K,Kato Hdoi
10.1186/s12863-019-0763-7subject
Has Abstractpub_date
2019-07-26 00:00:00pages
61issue
1issn
1471-2156pii
10.1186/s12863-019-0763-7journal_volume
20pub_type
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