Variant Gene Disease Risk Allele Score vda Association Type Original DB Sentence supporting the association PMID PMID Year
dbSNP: rs1217691063
rs1217691063
Malignant neoplasm of colon and/or rectum
0.100 GeneticVariation BEFREE Relevance of methylenetetrahydrofolate reductase gene variants C677T and A1298C with response to fluoropyrimidine-based chemotherapy in colorectal cancer: a systematic review and meta-analysis. 30131855

2018

dbSNP: rs1217691063
rs1217691063
Malignant neoplasm of colon and/or rectum
0.100 GeneticVariation BEFREE DPYD*2A and MTHFR C677T predict toxicity and efficacy, respectively, in patients on chemotherapy with 5-fluorouracil for colorectal cancer. 29134491

2018

dbSNP: rs1217691063
rs1217691063
Malignant neoplasm of colon and/or rectum
0.100 GeneticVariation BEFREE Polymorphisms of MTHFR C677T and A1298C associated with survival in patients with colorectal cancer treated with 5-fluorouracil-based chemotherapy. 28044213

2017

dbSNP: rs1217691063
rs1217691063
Malignant neoplasm of colon and/or rectum
0.100 GeneticVariation BEFREE Methylenetetrahydrofolate reductase C677T polymorphism and colorectal cancer susceptibility: a meta-analysis. 29089462

2017

dbSNP: rs1217691063
rs1217691063
Malignant neoplasm of colon and/or rectum
0.100 GeneticVariation BEFREE We found that the MTHFR C677T polymorphism was associated with colorectal cancer (P<0.04) but not with gastric cancer. 27823653

2016

dbSNP: rs1217691063
rs1217691063
Malignant neoplasm of colon and/or rectum
0.100 GeneticVariation BEFREE MTHFR C677T polymorphism and anatomopathological characteristics with prognostic significance in sporadic colorectal cancer. 26564107

2015

dbSNP: rs1217691063
rs1217691063
Malignant neoplasm of colon and/or rectum
0.100 GeneticVariation BEFREE Overall, no significant association was found between the MTHFR C677T polymorphism and colorectal cancer in Asian populations (for T vs. C: OR=1.03; 95% CI= 0.92-1.5; p= 0.64; for TT vs CC: OR=0.88; 95%CI= 0.74-1.04; p= 0.04; for CT vs. CC: OR = 1.02; 95%CI= 0.93-1.12; p=0.59; for TT+ CT vs. CC: OR=1.07; 95%CI= 0.94-1.22; p=0.87). 26745044

2015

dbSNP: rs1217691063
rs1217691063
Malignant neoplasm of colon and/or rectum
0.100 GeneticVariation BEFREE In summary, this meta-analysis suggests that MTHFR C677T polymorphism is associated with increased breast cancer, gastric cancer, and hepatocellular cancer risk in Asians, is associated with increased gastric cancer, multiple myeloma, and NHL risk in Caucasians, is associated with decreased AALL risk in Caucasians, is associated with decreased CALL risk in Asians, is associated with increased breast cancer risk in Asians, is associated with decreased colon cancer risk, and is associated with decreased colorectal cancer risk in male population. 26081619

2015

dbSNP: rs1217691063
rs1217691063
Malignant neoplasm of colon and/or rectum
0.100 GeneticVariation BEFREE Association of MTHFR C677T polymorphisms and colorectal cancer risk in Asians: evidence of 12,255 subjects. 24193867

2014

dbSNP: rs1217691063
rs1217691063
Malignant neoplasm of colon and/or rectum
0.100 GeneticVariation BEFREE Methylenetetrahydrofolate reductase gene germ-line C677T and A1298C SNPs are associated with colorectal cancer risk in the Turkish population. 25292054

2014

dbSNP: rs1217691063
rs1217691063
Malignant neoplasm of colon and/or rectum
0.100 GeneticVariation BEFREE This meta-analysis suggests that the MTHFR 677C>T polymorphism increases the risk for developing colorectal cancer, while there is no association among Africans found in subgroup analysis by ethnicity. 23437053

2013

dbSNP: rs1217691063
rs1217691063
Malignant neoplasm of colon and/or rectum
0.100 GeneticVariation BEFREE Impact of the MTHFR C677T polymorphism on colorectal cancer in a population with low genetic variability. 23422951

2013

dbSNP: rs1217691063
rs1217691063
Malignant neoplasm of colon and/or rectum
0.100 GeneticVariation BEFREE Dietary intake of folate and alcohol, MTHFR C677T polymorphism, and colorectal cancer risk in Korea. 22218157

2012

dbSNP: rs1217691063
rs1217691063
Malignant neoplasm of colon and/or rectum
0.100 GeneticVariation BEFREE MTHFR C677T polymorphism contributes to colorectal cancer susceptibility: evidence from 61 case-control studies. 22729883

2012

dbSNP: rs1217691063
rs1217691063
Malignant neoplasm of colon and/or rectum
0.100 GeneticVariation BEFREE Relevant studies concerning the association between the MTHFR C677T polymorphism and risk of colorectal cancer were included into this meta-analysis. 22799306

2012

dbSNP: rs1217691063
rs1217691063
Malignant neoplasm of colon and/or rectum
0.100 GeneticVariation BEFREE This meta-analysis suggests that MTHFR C677T polymorphism is associated with decreased risk of colorectal cancer in East Asians, and MTHFR 677T variant has a protective effect on colorectal cancer. 22890827

2012

dbSNP: rs1217691063
rs1217691063
Malignant neoplasm of colon and/or rectum
0.100 GeneticVariation BEFREE We evaluated the associations between plasma folate, MTHFR C677T, and A1298C, and colorectal cancer in three large prospective studies: the Nurses' Health Study, the Health Professionals Follow-up Study, and the Physicians' Health Study. 22367721

2012

dbSNP: rs1217691063
rs1217691063
Malignant neoplasm of colon and/or rectum
0.100 GeneticVariation BEFREE However, in meta-analyses odds ratio for MTHFR c.677C>T homozygotes versus noncarriers were 1.07 (95% CI: 1.01-1.12) for any cancer, 1.77 (1.17-2.68) for esophagus cancer, 1.40 (1.19-1.66) for gastric cancer and 0.85 (0.77-0.94) for colorectal cancer. 20473868

2011

dbSNP: rs1217691063
rs1217691063
Malignant neoplasm of colon and/or rectum
0.100 GeneticVariation BEFREE We conclude that the MTHFR C677T polymorphism slightly increases the risk for colorectal cancer development in our ethnic Kashmir population. 21732284

2011

dbSNP: rs1217691063
rs1217691063
Malignant neoplasm of colon and/or rectum
0.100 GeneticVariation BEFREE We made a case-control study to analyze a possible association of MTHFR gene polymorphisms C677T and A1298C with risk for colorectal cancer in an eastern Chinese Han population of 137 patients with a confirmed histopathological diagnosis of CRC and 145 age- and gender-matched controls with no history of cancer. 22194208

2011

dbSNP: rs1217691063
rs1217691063
Malignant neoplasm of colon and/or rectum
0.100 GeneticVariation BEFREE We found that the 677 C>T polymorphism in the MTHFR gene significantly decreased the risk for colorectal cancer in homozygous carriers of the variant allele (OR, 0.58; 95% CI, 0.39-0.87). 21211571

2011

dbSNP: rs1217691063
rs1217691063
Malignant neoplasm of colon and/or rectum
0.100 GeneticVariation BEFREE Impact of MTHFR gene C677T polymorphism on Bcl-2 gene methylation and protein expression in colorectal cancer. 21128871

2011

dbSNP: rs1217691063
rs1217691063
Malignant neoplasm of colon and/or rectum
0.100 GeneticVariation BEFREE Our results did not support an effect of PAI-1 4G/5G, MTHFR 677C>T, and fibrinogen gamma 10034C>T on colorectal cancer risk. 21422408

2011

dbSNP: rs1217691063
rs1217691063
Malignant neoplasm of colon and/or rectum
0.100 GeneticVariation BEFREE We aimed to test the hypothesis that C677T and A1298C variants of MTHFR predispose to microsatellite instable (MSI) colorectal cancer. 20193847

2010

dbSNP: rs1217691063
rs1217691063
Malignant neoplasm of colon and/or rectum
0.100 GeneticVariation BEFREE Although MTHFR C677T was associated with increased risks of colorectal cancer, leukemia, and gastric cancer, our pooled data suggest no evidence for a major role of MTHFR C677T in the carcinogenesis of childhood acute lymphoblastic leukemia. 20409583

2010