Abstract
We conducted a multistage genome-wide association study (GWAS) of tanning response after exposure to sunlight in over 9,000 men and women of European ancestry who live in the United States. An initial analysis of 528,173 single-nucleotide polymorphisms (SNPs) genotyped on 2,287 women identified LOC401937 (rs966321) on chromosome 1 as a novel locus highly associated with tanning ability, and we confirmed this association in 870 women controls from a skin cancer case-control study with joint P-value=1.6 x 10(-9). We further genotyped this SNP in two subsequent replication studies (one with 3,750 women and the other with 2,405 men). This association was not replicated in either of these two studies. We found that several SNPs reaching the genome-wide significance level are located in or adjacent to the loci previously known as pigmentation genes: MATP, IRF4, TYR, OCA2, and MC1R. Overall, these tanning ability-related loci are similar to the hair color-related loci previously reported in the GWAS of hair color.
MeSH Terms
Chromosome Mapping
Genome-Wide Association Study
Guanine Nucleotide Exchange Factors/genetics
Hair Color
Humans
Membrane Transport Proteins/genetics
Phenotype
Polymorphism, Single Nucleotide
Receptor, Melanocortin, Type 1/genetics
Sunbathing
Ubiquitin-Protein Ligases
Whites/genetics
Chemicals
Guanine Nucleotide Exchange Factors
Membrane Transport Proteins
OCA2 protein, human
Receptor, Melanocortin, Type 1
HERC2 protein, human
Ubiquitin-Protein Ligases
Authors & Affiliations
12 authors, click to expand affiliations / ORCID
Nan Hongmei
Channing Laboratory, Department of Medicine, Harvard Medical School, Brigham and Women's Hospital, Boston, Massachusetts 02115, USA. hnan@hsph.harvard.edu
Kraft Peter
Qureshi Abrar A
Guo Qun
Chen Constance
Hankinson Susan E
Hu Frank B
Thomas Gilles
Hoover Robert N
Chanock Stephen
Hunter David J
Han Jiali
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