Variant Gene Risk Allele Score vda Association Type Original DB Sentence supporting the association PMID PMID Year
dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE To explore the role of aberrant hypermethylation of cancer-related genes, such as P16, MGMT, and hMLH1, in the esophageal squamous cell carcinoma (ESCC) as well as its relation to dietary folate intake and MTHFR C677T polymorphism, we conducted a molecular epidemiologic study in China. 18199718

2008

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE Methylenetetrahydrofolate reductase (MTHFR) and methionine synthase reductase (MTRR) play an essential role in both DNA synthesis and methylation and polymorphisms in the MTHFR gene, 677C>T, 1298A>C and the MTRR gene, 66A>G, are associated with several types of malignancy. 19035314

2008

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE Two common variants in the MTHFR gene (C677T and A1298C) have been associated with reduced enzyme activity, thereby making MTHFR polymorphisms a potential candidate as a cancer-predisposing factor. 17712558

2007

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE Common methylenetetrahydrofolate reductase gene variants (MTHFR C677T and A1298C) have been described to have opposite effects on cancer patients. 17488658

2007

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE The methylenetetrahydrofolate reductase (MTHFR) C677T polymorphism and cancer risk: the Croatian case-control study. 17573062

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 C677T polymorphism of the methylene-tetrahydrofolate reductase (MTHFR) gene is associated with a reduction of catalytic activity and is suggested to modify cancer risk differently depending on folate status. 16950805

2006

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE To evaluate the C677T and A1298C functional polymorphisms in the MTHFR gene and their associations with breast cancer risk, as well as the potential modifying effect by plasma folate status on the MTHFR-associated risk, a hospital-based case-control study was conducted on a Taiwanese population consisting of 146 histologically confirmed incident breast cancer cases and their 285 age-matched controls without a history of cancer. 16777985

2006

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE We performed a prospective study to evaluate the prevalence and clinical significance of four gene variations (factor V Leiden [FVL], factor II G20210A, factor XIII Val34Leu and MTHFR C677T) in cancer patients, with and without VTE. 12757770

2003

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE Cancer risk may be increased in individuals with the homozygous genotype for the MTHFR 677C-->T polymorphism who have low status of methyl-related nutrients including folate. 14608109

2003

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE Multiplex PCR for simultaneous detection of 677 C-->T and 1298 A-->C polymorphisms in methylenetetrahydrofolate reductase gene for population studies of cancer risk. 12175537

2002

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE Some examples include the alanine-to-valine substitution at codon 222 (Ala222-->Val) [DNA: C-to-T substitution at nucleo-tide 677 (677C-->T)] in methylenetetrahydrofolate reductase (NADPH) and the cofactor FAD (in relation to cardiovascular disease, migraines, and rages), the Pro187-->Ser (DNA: 609C-->T) mutation in NAD(P):quinone oxidoreductase 1 [NAD(P)H dehy-drogenase (quinone)] and FAD (in relation to cancer), the Ala44-->Gly (DNA: 131C-->G) mutation in glucose-6-phosphate 1-dehydrogenase and NADP (in relation to favism and hemolytic anemia), and the Glu487-->Lys mutation (present in one-half of Asians) in aldehyde dehydrogenase (NAD + ) and NAD (in relation to alcohol intolerance, Alzheimer disease, and cancer). 11916749

2002