Variant Gene Risk Allele Score vda Association Type Original DB Sentence supporting the association PMID PMID Year
dbSNP: rs1801133
rs1801133
0.100 GeneticVariation BEFREE Further SNPs associated with CRC risk included several previously reported to be associated with cancer risk including ATM F858L [OR=1.48; 95% confidence interval (CI): 1.06-2.07] and P1054R (OR=1.42; 95% CI: 1.14-1.77) and MTHFR A222V (OR=0.82; 95% CI: 0.69-0.97). 17000706

2006

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE Total plasma homocysteine and methylenetetrahydrofolate reductase C677T polymorphism in patients with colorectal carcinoma. 17036383

2006

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE Association studies on the MTHFR polymorphisms (C677T and A1298C) in colorectal cancer (CRC) and colorectal adenoma have shown conflicting results. 17089070

2007

dbSNP: rs397507444
rs397507444
0.100 GeneticVariation BEFREE Different roles of MTHFR C677T and A1298C polymorphisms in colorectal adenoma and colorectal cancer: a meta-analysis. 17089070

2007

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE Since it is unknown whether the MTHFR C677T and A1298C polymorphisms alter the risk for CRC, this was the aim of our study. 17111187

2007

dbSNP: rs397507444
rs397507444
0.100 GeneticVariation BEFREE Since it is unknown whether the MTHFR C677T and A1298C polymorphisms alter the risk for CRC, this was the aim of our study. 17111187

2007

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE MTHFR C677T and colorectal cancer risk: A meta-analysis of 25 populations. 17131337

2007

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE When MTHFR C677T genotype frequencies in MSS CRC cases were compared to controls, individuals with homozygous variant genotype were at 19% reduced risk of cancer compared to wild type (OR = 0.81; 95% CI: 0.65-1.02). 17350979

2007

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE The protective effect of the homozygous variant TT form of the MTHFR genotype (C677T) on the risk of colorectal cancer seems to be modified by the level of methyl diets, that is, by folate, which has a protective effect, or conversely by alcohol. 17602711

2007

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE This is the first report to our knowledge to provide evidence that the C677T</span> polymorphism modifies the age at onset of colorectal cancer in Caucasian Lynch syndrome subjects with the 677T allele having a protective effect. 17855693

2007

dbSNP: rs397507444
rs397507444
0.100 GeneticVariation BEFREE We investigated the association of C677T and A1298C, two common polymorphisms in the methylenetetrahydrofolate reductase gene, with risk for early onset colorectal cancer in Lynch syndrome. 17855693

2007

dbSNP: rs397507444
rs397507444
0.100 GeneticVariation BEFREE C667T and A1298C mutations represent a risk factor for colorectal cancer with an OR (odds ratio) = 2.13 (CI (0.51-8.91)) and 3 (CI(0.3-29.58), respectively, in homozygous patients. 17925917

2007

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE We report a population-based case-control study of folate intake, related dietary factors and MTHFR polymorphisms (C677T, A1298C) and colorectal cancer in a population with relatively high colorectal cancer incidence and relatively low folate intake. 18053312

2008

dbSNP: rs397507444
rs397507444
0.100 GeneticVariation BEFREE We report a population-based case-control study of folate intake, related dietary factors and MTHFR polymorphisms (C677T, A1298C) and colorectal cancer in a population with relatively high colorectal cancer incidence and relatively low folate intake. 18053312

2008

dbSNP: rs768873896
rs768873896
0.010 GeneticVariation BEFREE Six gene polymorphisms functional in drug-metabolism - GSTP1 Ile105Val, ABCB1 Ile1145Ile, MTHFR Ala222Val, TYMS double (2R) or triple (3R) tandem repeat - and DNA-repair genes - ERCC2 Lys751Gln and XRCC1 Arg399Gln - were assessed in 201 CRC patients using a polymerase chain reaction-restriction fragment-length polymorphism (PCR-RFLP) technique and DNA sequencing. 18267032

2008

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE Methylenetetrahydrofolate reductase C677T genotype affects promoter methylation of tumor-specific genes in sporadic colorectal cancer through an interaction with folate/vitamin B12 status. 18595133

2008

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE To study the relation between genetic polymorphisms of methylenetetrahydrofolate reductase (MTHFR) C677T or A1298C and the susceptibility of colorectal cancer. 18712959

2009

dbSNP: rs397507444
rs397507444
0.100 GeneticVariation BEFREE To study the relation between genetic polymorphisms of methylenetetrahydrofolate reductase (MTHFR) C677T or A1298C and the susceptibility of colorectal cancer. 18712959

2009

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE Certain common polymorphisms within the MTHFR gene (C677T, A1298C) result in reduced enzymatic activity and have been associated with reduced risk for a variety of cancers such as acute lymphocytic leukemia, lung and colorectal cancer. 18804702

2008

dbSNP: rs397507444
rs397507444
0.100 GeneticVariation BEFREE Certain common polymorphisms within the MTHFR gene (C677T, A1298C) result in reduced enzymatic activity and have been associated with reduced risk for a variety of cancers such as acute lymphocytic leukemia, lung and colorectal cancer. 18804702

2008

dbSNP: rs1801131
rs1801131
0.060 GeneticVariation BEFREE Three SNPs were shown to increase CRC risk: PTGS1 c.639C>A (p.Gly213Gly), IL8 c.-352T>A, and MTHFR c.1286A>C (p.Ala429Glu). 18992148

2008

dbSNP: rs150963282
rs150963282
0.010 GeneticVariation BEFREE Three SNPs were shown to increase CRC risk: PTGS1 c.639C>A (p.Gly213Gly), IL8 c.-352T>A, and MTHFR c.1286A>C (p.Ala429Glu). 18992148

2008

dbSNP: rs373524607
rs373524607
0.010 GeneticVariation BEFREE On the contrary, two other SNPs, PLA2G2A c.435+230C>T and PPARG c.1431C>T (p.His477His), were associated with a decrease in CRC risk. 18992148

2008

dbSNP: rs765167328
rs765167328
0.010 GeneticVariation BEFREE Three SNPs were shown to increase CRC risk: PTGS1 c.639C>A (p.Gly213Gly), IL8 c.-352T>A, and MTHFR c.1286A>C (p.Ala429Glu). 18992148

2008

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE These results show an association between the C677T MTHFR variant and different folate intakes on risk of CRC. 18996879

2008