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Wang S, Huo D, Kupfer S, Alleyne D, Ogundiran TO, Ojengbede O, Zheng W, Nathanson KL, Nemesure B, Ambs S, Olopade OI, Zheng Y. Genetic variation in the vitamin D related pathway and breast cancer risk in women of African ancestry in the root consortium. Int J Cancer 2017; 142:36-43. [PMID: 28891071 DOI: 10.1002/ijc.31038] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 07/07/2017] [Accepted: 07/12/2017] [Indexed: 01/08/2023]
Abstract
The vitamin D related pathway has been evaluated in carcinogenesis but its genetic contribution remains poorly understood. We examined single-nucleotide polymorphisms (SNPs) in the vitamin D related pathway genes using data from a genome-wide association study (GWAS) of breast cancer in the African Diaspora that included 3,686 participants (1,657 cases). Pathway- and gene-level analyses were conducted using the adaptive rank truncated product test. Odds ratios (OR) and 95% confidence intervals (CI) were estimated at SNP-level. After stringent Bonferroni corrections, we observed no significant association between variants in the vitamin D pathway and breast cancer risk at the pathway-, gene-, or SNP-level. In addition, no association was found for either the reported signals from GWASs of vitamin D related traits, or the SNPs within vitamin D receptor (VDR) binding regions. Furthermore, a decrease in genetically predicted 25(OH)D levels by Mendelian randomization was not associated with breast cancer (p = 0.23). However, an association for breast cancer with the pigment synthesis/metabolism pathway almost approached significance (pathway-level p = 0.08), driven primarily by a nonsense SNP rs41302073 in TYRP1, with an OR of 1.54 (95% CI = 1.24-1.91, padj = 0.007). In conclusion, we found no evidence to support an association between vitamin D status and breast cancer risk in women of African ancestry, suggesting that vitamin D is unlikely to have significant effect on breast carcinogenesis. Interestingly, TYRP1 might be related to breast cancer through a non-vitamin D relevant mechanism but further studies are needed.
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Affiliation(s)
- Shengfeng Wang
- Center for Clinical Cancer Genetics & Global Health, Department of Medicine, University of Chicago, Chicago, IL
| | - Dezheng Huo
- Department of Public Health Sciences, University of Chicago, Chicago, IL
| | - Sonia Kupfer
- Department of Medicine, University of Chicago, Chicago, Illinois
| | - Dereck Alleyne
- Department of Medicine, University of Chicago, Chicago, Illinois
| | - Temidayo O Ogundiran
- Department of Surgery, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Oladosu Ojengbede
- Center for Population and Reproductive Health, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Wei Zheng
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University, Nashville, TN
| | | | - Barbara Nemesure
- Department of Preventive Medicine, State University of New York at Stony Brook, Stony Brook, NY
| | - Stefan Ambs
- Laboratory of Human Carcinogenesis, National Cancer Institute, Bethesda, MD
| | - Olufunmilayo I Olopade
- Center for Clinical Cancer Genetics & Global Health, Department of Medicine, University of Chicago, Chicago, IL
| | - Yonglan Zheng
- Center for Clinical Cancer Genetics & Global Health, Department of Medicine, University of Chicago, Chicago, IL
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