Disease Risk Allele Score vda Association Type Original DB Sentence supporting the association PMID PMID Year
Malignant neoplasm of breast
CUI: C0006142
Disease: Malignant neoplasm of breast
0.100 GeneticVariation BEFREE Furthermore, it has been shown in patients with breast cancer a risk of presenting with an aggressive biophenotype about twice or three times higher in the presence of the C677T and A1298C polymorphisms, respectively. 31523170 2019
Malignant neoplasm of breast
CUI: C0006142
Disease: Malignant neoplasm of breast
0.100 GeneticVariation BEFREE No association between the A1298C polymorphism and the risk to develop breast cancer was determined. 30877449 2019
Malignant neoplasm of breast
CUI: C0006142
Disease: Malignant neoplasm of breast
0.100 GeneticVariation BEFREE We investigated the relationship between two common MTHFR polymorphisms (C677T and A1298C) and breast cancer (BC) chemotherapy response. 27706773 2016
Malignant neoplasm of breast
CUI: C0006142
Disease: Malignant neoplasm of breast
0.100 GeneticVariation BEFREE Our meta-analysis suggested that there is no significant association between MTHFR gene 1298A>C polymorphism and breast cancer susceptibility for overall population. 27568010 2016
Malignant neoplasm of breast
CUI: C0006142
Disease: Malignant neoplasm of breast
0.100 GeneticVariation BEFREE Relationship between Genetic Polymorphisms in MTHFR (C677T, A1298C and their Haplotypes) and the Incidence Of Breast Cancer among Jordanian Females--Case-Control Study. 26163632 2015
Malignant neoplasm of breast
CUI: C0006142
Disease: Malignant neoplasm of breast
0.100 GeneticVariation BEFREE Association between MTHFR 677C/T and 1298A/C gene polymorphisms and breast cancer risk. 26662439 2015
Malignant neoplasm of breast
CUI: C0006142
Disease: Malignant neoplasm of breast
0.100 GeneticVariation BEFREE The role of folate in BC is equivocal, association studies between the common MTHFR SNPs C677T and A1298C and BC risk are controversial. 25318348 2015
Malignant neoplasm of breast
CUI: C0006142
Disease: Malignant neoplasm of breast
0.100 GeneticVariation BEFREE However, the 1298 A>C polymorphism is not significantly associated with increased risks of breast cancer. 24945727 2014
Malignant neoplasm of breast
CUI: C0006142
Disease: Malignant neoplasm of breast
0.100 GeneticVariation BEFREE There was no significant association found between A1298C polymorphism and breast cancer risk under all genetic models (C vs. A: OR = 0.96, 95 % CI = 0.89-1.03, P = 0.268; CC vs. AA: OR = 0.98, 95 % CI = 0.77-1.26, P = 0.899; AC vs. AA: OR = 0.95, 95 % CI = 0.88-1.02, P = 0.174; CC vs. AC/AA: OR = 1.00, 95 % CI = 0.78-1.28, P = 0.996, CC/AC vs. AA: OR = 0.96, 95 % CI = 0.89-1.02, P = 0.196). 24078451 2014
Malignant neoplasm of breast
CUI: C0006142
Disease: Malignant neoplasm of breast
0.100 GeneticVariation BEFREE We conducted a hospital-based case-control study to investigate the associations of dietary intake of folate and MTHFR C677T and A1298C polymorphisms with breast cancer in a Chinese population. 25078601 2014
Malignant neoplasm of breast
CUI: C0006142
Disease: Malignant neoplasm of breast
0.100 GeneticVariation BEFREE The findings suggest that the MTHFR C677T polymorphism but not A1298C, and some variants on their combined genotypes or haplotypes may be involved with the development of breast cancer. 24973876 2014
Malignant neoplasm of breast
CUI: C0006142
Disease: Malignant neoplasm of breast
0.100 GeneticVariation BEFREE Two well-known polymorphic variants of MTHFR, C677T (rs1801133) and A1298C (rs1801131), were analyzed and their joint effects with individual age- and estrogen-related factors on breast cancer risk were discussed. 25075036 2014
Malignant neoplasm of breast
CUI: C0006142
Disease: Malignant neoplasm of breast
0.100 GeneticVariation BEFREE The present data suggest that germ-line polymorphisms of C677T, C1298A for MTHFR and R2 for FV are associated in breast cancer and may be additional prognostic markers related to breast cancer survival. 23803051 2013
Malignant neoplasm of breast
CUI: C0006142
Disease: Malignant neoplasm of breast
0.100 GeneticVariation BEFREE The MTHFR A1298C genotype was associated with a decreased risk of BC [OR=0.68; 95% CI: 0.49-0.95]. 24023349 2013
Malignant neoplasm of breast
CUI: C0006142
Disease: Malignant neoplasm of breast
0.100 GeneticVariation BEFREE Folate intake, vitamin B12 intake and variants of MTHFR C677T and MTHFR A1298C demonstrated no association with risk of breast cancer. 24175799 2013
Malignant neoplasm of breast
CUI: C0006142
Disease: Malignant neoplasm of breast
0.100 GeneticVariation BEFREE In this case-control study, we investigated the association between MTHFR C677T and A1298C, TYMS 5'-UTR, MTR A2756G and cSHMT C1420T and also the folate carrier (RFC1 G80A) and breast cancer risk in a northeastern Brazilian population. 22134752 2012
Malignant neoplasm of breast
CUI: C0006142
Disease: Malignant neoplasm of breast
0.100 GeneticVariation BEFREE This study points out the importance of the interactions between the MTHFR C677T, MTHFR A1298C and MTR A2756G polymorphisms, and also highlights the relevance of the MTR A2756G polymorphism and age in breast cancer risk. 23155246 2012
Malignant neoplasm of breast
CUI: C0006142
Disease: Malignant neoplasm of breast
0.100 GeneticVariation BEFREE We examined the association of two common MTHFR polymorphisms (C677T and A1298C) and their haplotypes in a candidate-gene association study, involving 300 female patients with BC and 283 healthy women. 21875371 2012
Malignant neoplasm of breast
CUI: C0006142
Disease: Malignant neoplasm of breast
0.100 GeneticVariation BEFREE Associations between the combined MTHFR C677T-A1298C polymorphism and breast cancer are possible from this study. 22901194 2012
Malignant neoplasm of breast
CUI: C0006142
Disease: Malignant neoplasm of breast
0.100 GeneticVariation BEFREE Overall, no significant associations were found between MTHFR A1</span>298C polymorphism and breast cancer risk when all studies pooled into the meta-analysis (AC vs. AA: OR=0.99, 95% CI 0.94-1.05; CC vs. AA: OR 0.99, 95% CI 0.90-1.09; dominant model: OR=0.99, 95% CI 0.95-1.04; and recessive model: OR=0.98, 95% CI 0.90-1.08). 21052845 2011
Malignant neoplasm of breast
CUI: C0006142
Disease: Malignant neoplasm of breast
0.100 GeneticVariation BEFREE We investigated the independent and the combined effects of two commonly occurring polymorphisms, MTHFR 677C>T (rs1801133) and MTHFR 1298A>C (rs1801131), as well as their interaction with the use of hormone replacement therapy (HRT), to determine their potential contribution to breast cancer risk. 21461582 2011
Malignant neoplasm of breast
CUI: C0006142
Disease: Malignant neoplasm of breast
0.100 GeneticVariation BEFREE With respect to A1298C polymorphism, no significant association with breast cancer risk was demonstrated in overall, ethnicity- and menopausal status-based population. 20135343 2010
Malignant neoplasm of breast
CUI: C0006142
Disease: Malignant neoplasm of breast
0.100 GeneticVariation BEFREE We examined if the association between tertiles of dietary folate equivalents (DFE) and breast cancer was different in subgroups according to genotypes of the MTHFR 677 C>T (rs1801133) and 1298A>C (rs1801131) SNPs and if the polymorphisms per se were associated with breast cancer. 19336565 2009
Malignant neoplasm of breast
CUI: C0006142
Disease: Malignant neoplasm of breast
0.100 GeneticVariation BEFREE Based on the hypothesis that variants of the cSHMT C1420T together with methionine synthase (MS A2756G) and 5,10-methylenetetrahydrofolate reductase (MTHFR C677T and A1298C) are associated with breast cancer, we performed a multigenic case-control study of the effects to breast cancer risk of four polymorphisms of folate-metabolizing genes against duration of estrogen exposure. 17896178 2008
Malignant neoplasm of breast
CUI: C0006142
Disease: Malignant neoplasm of breast
0.100 GeneticVariation BEFREE Viable cell growth, MDI, and polymorphism frequency in MTRR (A66G and C524T) and MTHFR (A1298C and A1793G) did not differ among the study groups; however, MDI tended to be higher in BRCA carriers with breast cancer than those without and was significantly increased in MTHFR 677T allele carriers relative to wild-type carriers (P=0.017). 18842997 2008