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| Content Provider | Springer Nature Link |
|---|---|
| Author | Pibiri, Fabio Kittles, Rick A. Sandler, Robert S. Keku, Temitope O. Kupfer, Sonia S. Xicola, Rosa M. Llor, Xavier Ellis, Nathan A. |
| Copyright Year | 2014 |
| Abstract | Disparities in both colorectal cancer (CRC) incidence and survival impact African Americans (AAs) more than other US ethnic groups. Because vitamin D is thought to protect against CRC and AAs have lower serum vitamin D levels, genetic variants that modulate the levels of active hormone in the tissues could explain some of the cancer health disparity. Consequently, we hypothesized that genetic variants in vitamin D-related genes are associated with CRC risk.To test this hypothesis, we studied 39 potentially functional single-nucleotide polymorphisms (SNPs) in eight genes (CYP2R1, CYP3A4, CYP24A1, CYP27A1, CYP27B1, GC, DHCR7, and VDR) in 961 AA CRC cases and 838 healthy AA controls from Chicago and North Carolina. We tested whether SNPs are associated with CRC incidence using logistic regression models to calculate p values, odds ratios, and 95 % confidence intervals. In the logistic regression, we used a log-additive genetic model and used age, gender, and percent West African ancestry, which we estimated with the program STRUCTURE, as covariates in the models.A nominally significant association was detected between CRC and the SNP rs12794714 in the vitamin D 25-hydroxylase gene CYP2R1 (p = 0.019), a SNP that has previously been associated with serum vitamin D levels. Two SNPs, rs16847024 in the GC gene and rs6022990 in the CYP24A1 gene, were nominally associated with left-sided CRC (p = 0.015 and p = 0.018, respectively).Our results strongly suggest that genetic variation in vitamin D-related genes could affect CRC susceptibility in AAs. |
| Starting Page | 561 |
| Ending Page | 570 |
| Page Count | 10 |
| File Format | |
| ISSN | 09575243 |
| Journal | Cancer Causes & Control |
| Volume Number | 25 |
| Issue Number | 5 |
| e-ISSN | 15737225 |
| Language | English |
| Publisher | Springer International Publishing |
| Publisher Date | 2014-02-23 |
| Publisher Place | Cham |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Vitamin D Colorectal cancer Genetic risk factors Cancer health disparities African American population Cancer Research Biomedicine general Oncology Public Health Epidemiology Hematology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cancer Research Oncology |
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