Variation in the vitamin D receptor gene is not associated with risk of colorectal cancer in the Czech Republic.
AuthorsHughes, David J
AffiliationDepartment of Clinical Medicine, Trinity College Centre for Health Sciences,, Adelaide and Meath Hospital, Dublin 24, Ireland. firstname.lastname@example.org
Aged, 80 and over
Polymerase Chain Reaction
MetadataShow full item record
CitationJ Gastrointest Cancer. 2011 Sep;42(3):149-54.
JournalJournal of gastrointestinal cancer
AbstractPURPOSE: Increased levels of vitamin D may protect against colorectal cancer (CRC) development and recurrence. Accumulating epidemiologic evidence suggests these effects may be partly mediated by genetic variants of the vitamin D receptor (VDR) proposed to be associated with altered risk of CRC. We wished to determine if common VDR polymorphisms affected CRC risk in the Czech Republic, a homogenous European population with a high CRC incidence rate. METHODS: Frequencies of the common VDR gene polymorphisms rs2238136, rs1544410 (BsmI), rs7975232 (ApaI), and rs731236 (TaqI) were determined using allele-specific PCR in a case control analysis of a series of 754 CRC patients and 627 patients without malignant disease recruited from centers throughout the Czech Republic. Unconditional logistic regression was used to calculate odds ratios and 95% confidence intervals for the association between these variants and risk of CRC. RESULTS: None of the four polymorphisms tested had any significant effect on CRC risk. No significant differences were observed in susceptibility when the population was stratified by anatomical sub-site, sex, BMI, smoking, alcohol, or presence of polyps. CONCLUSIONS: We conclude that common variation in the VDR gene had little effect on its own on predisposition to sporadic CRC in the Czech population.
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