期刊
NATURE COMMUNICATIONS
卷 12, 期 1, 页码 -出版社
NATURE RESEARCH
DOI: 10.1038/s41467-020-20368-w
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资金
- National Health and Medical Research Council of Australia (NHMRC) [APP1063061, APP1185416, APP1123248, APP1154543]
- Welsh Assembly Government
- British Heart Foundation
- Diabetes UK
A study using a larger set of variants associated with 25(OH)D re-evaluated the relationship between 25(OH)D and cancer, finding no relationship for most cancers except for ovarian cancer and basal cell carcinoma. After adjusting for pigmentation related variables, the association with basal cell carcinoma was attenuated.
Previous Mendelian randomization (MR) studies on 25-hydroxyvitamin D (25(OH)D) and cancer have typically adopted a handful of variants and found no relationship between 25(OH)D and cancer; however, issues of horizontal pleiotropy cannot be reliably addressed. Using a larger set of variants associated with 25(OH)D (74 SNPs, up from 6 previously), we perform a unified MR analysis to re-evaluate the relationship between 25(OH)D and ten cancers. Our findings are broadly consistent with previous MR studies indicating no relationship, apart from ovarian cancers (OR 0.89; 95% C.I: 0.82 to 0.96 per 1SD change in 25(OH)D concentration) and basal cell carcinoma (OR 1.16; 95% C.I.: 1.04 to 1.28). However, after adjustment for pigmentation related variables in a multivariable MR framework, the BCC findings were attenuated. Here we report that lower 25(OH)D is unlikely to be a causal risk factor for most cancers, with our study providing more precise confidence intervals than previously possible. Studies of the genetic association between vitamin D and cancer risk have typically been underpowered. Here the authors analyse this using Mendelian Randomisation with more than 70 vitamin D variants obtained from the UK Biobank and large-scale data from various consortia, confirming null associations between vitamin D and most cancers.
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