Journal
HUMAN MOLECULAR GENETICS
Volume 19, Issue 9, Pages 1846-1855Publisher
OXFORD UNIV PRESS
DOI: 10.1093/hmg/ddq056
Keywords
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Funding
- National Human Genome Research Institute [U01HG004738, U01HG004422, U01HG004402, U01HG004729, U01HG004726, U01HG 004735, U01HG004415, U01HG004436, U01HG004423, U01HG004728, RFAHG006033]
- National Institute of Dental & Craniofacial Research) [U01D E018993, U01DE018903]
- National Institutes of Health GEI [U01HG04424, U01HG004438]
- National Institutes of Health [HHSN268200782096C, RO1 HL71981, DK58785, DK79929, DK81913]
- National Cancer Institute [P01CA087969, P01CA055075]
- National Institute of Diabetes and Digestive and Kidney Diseases [R01DK058845]
- Merck Co., Inc.
- Cyprus Research Promotion Foundation [EPYE/0205/10]
- Boston Obesity Nutrition Research Center [DK46200]
- Canadian Institutes of Health
- American Heart Association
- Beth Israel Deaconess Medical Center
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Plasma soluble leptin receptor (sOB-R) levels were inversely associated with diabetes risk factors, including adiposity and insulin resistance, and highly correlated with the expression levels of leptin receptor, which is ubiquitously expressed in most tissues. We conducted a genome-wide association study of sOB-R in 1504 women of European ancestry from the Nurses' Health Study. The initial scan yielded 26 single nucleotide polymorphisms (SNPs) significantly associated with sOB-R levels (P < 5 x 10(-8)); all mapping to the leptin receptor gene (LEPR). Analysis of imputed genotypes on autosomal chromosomes revealed an additional 106 SNPs in and adjacent to this gene that reached genome-wide significance level. Of these 132 SNPs (including two non-synonymous SNPs, rs1137100 and rs1137101), rs2767485, rs1751492 and rs4655555 remained associated with sOB-R levels at the 0.05 level (P = 9.1 x 10(-9), 0.0105 and 0.0267, respectively) after adjustment for other univariately associated SNPs in a forward selection procedure. Significant associations with these SNPs were replicated in an independent sample of young males (n = 875) residing in Cyprus (P < 1 x 10(-4)). These data provide novel evidence revealing the role of polymorphisms in LEPR in modulating plasma levels of sOB-R and may further our understanding of the complex relationships among leptin, leptin receptor and diabetes-related traits.
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