Abstract：
:Evidence is growing that low folate status may be a factor in the aetiology of several cancers, including breast cancer. The methylenetetrahydrofolate reductase gene (MTHFR), which has a key role in folate metabolism, is polymorphic. We report a case-control study of two functional polymorphisms in MTHFR, dietary folate intake and breast cancer. Sixty-two cases with invasive breast cancer and sixty-six general practice controls participated. Women reporting the highest dietary folate intake had non-significantly reduced breast cancer risk (odds ratio (OR) = 0.49, 95% confidence interval (CI) 0.20-1.20). Risk was significantly lower for the 1298CC genotype compared to AA (OR = 0.24, 95% CI 0.06-0.97). Relative to compound wild-type subjects, compound heterozygotes had moderately reduced risk (OR = 0.47, 95% CI 0.11-1.92) and homozygote variants (677TT and/or 1298CC) greater reduced risk (OR = 0.26, 95% CI 0.07-0.96); the trend was statistically significant. Patterns in risk with regard to genotype and folate combinations are broadly similar those reported for colorectal neoplasia. The roles of MTHFR and folate in breast cancer aetiology are likely to be complex.
journal_name
Cancer Lettjournal_title
Cancer lettersauthors
Sharp L,Little J,Schofield AC,Pavlidou E,Cotton SC,Miedzybrodzka Z,Baird JO,Haites NE,Heys SD,Grubb DAdoi
10.1016/s0304-3835(02)00030-7keywords:
subject
Has Abstractpub_date
2002-07-08 00:00:00pages
65-71issue
1eissn
0304-3835issn
1872-7980pii
S0304-3835(02)00030-7journal_volume
181pub_type
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