Common genetic determinants of vitamin D insufficiency: a genome-wide association study

TJ Wang, F Zhang, JB Richards, B Kestenbaum, Joyce van Meurs, D Berry, DP Kiel, EA Streeten, C Ohlsson, DL Koller, L Peltonen, JD Cooper, PF O'Reilly, DK Houston, NL Glazer, L Vandenput, M Peacock, J Shi, Fernando Rivadeneira, MI McCarthyP Anneli, IH (Ian) Boer, M Mangino, B Kato, DJ Smyth, SL Booth, PF Jacques, GL Burke, M Goodarzi, C Cheung, Monique Wolf, K Rice, D Goltzman, N Hidiroglou, M Ladouceur, NJ Wareham, LJ Hocking, Daphne Hart, NK Arden, C Cooper, S Malik, WD Fraser, AL Hartikainen, GJ Zhai, HM Macdonald, NG Forouhi, RJF Loos, DM Reid, A Hakim, E Dennison, YM Liu, C Power, HE Stevens, L Jaana, RS Vasan, N Soranzo, J Bojunga, BM Psaty, M Lorentzon, T Foroud, TB Harris, Bert Hofman, JO Jonsson, JA Cauley, André Uitterlinden, Q Gibson, MR Jarvelin, D Karasik, DS Siscovick, MJ Econs, SB Kritchevsky, JC Florez, JA Todd, J Dupuis, E Hypponen, TD Spector

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Abstract

Background Vitamin D is crucial for maintenance of musculoskeletal health, and might also have a role in extraskeletal tissues. Determinants of circulating 25-hydroxyvitamin D concentrations include sun exposure and diet, but high heritability suggests that genetic factors could also play a part. We aimed to identify common genetic variants affecting vitamin D concentrations and risk of insufficiency. Methods We undertook a genome-wide association study of 25-hydroxyvitamin D concentrations in 33 996 individuals of European descent from 15 cohorts. Five epidemiological cohorts were designated as discovery cohorts (n=16 125), five as in-silico replication cohorts (n=9367), and five as de-novo replication cohorts (n=8504). 25-hydroxyvitamin D concentrations were measured by radioimmunoassay, chemiluminescent assay, ELISA, or mass spectrometry. Vitamin D insufficiency was defined as concentrations lower than 75 nmol/L or 50 nmol/L. We combined results of genome-wide analyses across cohorts using Z-score-weighted meta-analysis. Genotype scores were constructed for confirmed variants. Findings Variants at three loci reached genome-wide significance in discovery cohorts for association with 25-hydroxyvitamin D concentrations, and were confirmed in replication cohorts: 4p12 (overall p=1.9x10(-109) for rs2282679, in GC); 11q12 (p=2.1x10(-22) for rs12785878, near DHCR7); and 11p15 (p=3.3x10(-20) for rs10741657, near CYP2R1). Variants at an additional locus (20q13, CYP24A1) were genome-wide significant in the pooled sample (p=6.0x10(-10) for rs6013897). Participants with a genotype score (combining the three confirmed variants) in the highest quartile were at increased risk of having 25-hydroxyvitamin D concentrations lower than 75 nmol/L (OR 2.47, 95% CI 2.20-2.78, p=2.3x10(-48)) or lower than 50 nmol/L (1.92, 1.70-2-16, p=1.0x10(-26)) compared with those in the lowest quartile. Interpretation Variants near genes involved in cholesterol synthesis, hydroxylation, and vitamin D transport affect vitamin D status. Genetic variation at these loci identifies individuals who have substantially raised risk of vitamin D insufficiency.
Original languageUndefined/Unknown
Pages (from-to)180-188
Number of pages9
JournalLancet (UK)
Volume376
Issue number9736
DOIs
Publication statusPublished - 2010

Research programs

  • EMC NIHES-01-64-01

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