Variant Gene Risk Allele Score vda Association Type Original DB Sentence supporting the association PMID PMID Year
dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE these 3 men were diagnosed as hyperhomocysteinemia and MTHFR C677T homozygous TT genotype. 30633186

2019

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE He was found as having MTHFR C677T homozygote and plasminogen activator inhibitor-1 4G/5G heterozygote gene mutation with high homocysteine level of 22.90 µmol/L, and he was diagnosed as hyperhomocysteinemia. 31409160

2019

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE Methylenetetrahydrofolate reductase C677T variant and hyperhomocysteinemia in subarachnoid hemorrhage patients from India. 29926428

2018

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE Association of vitamin B12 mediated hyperhomocysteinemia and methylenetetrafolate reductase (C677T) gene polymorphism with cognitive impairment: A population based study from North India. 30245375

2018

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE Genotyping of hyperhomocysteinemia associated MTHFR polymorphisms C677T (rs1801133) and A1298C (rs1801131) was done by PCR-restriction fragment length polymorphism. 29600437

2018

dbSNP: rs397507444
rs397507444
0.100 GeneticVariation BEFREE Genotyping of hyperhomocysteinemia associated MTHFR polymorphisms C677T (rs1801133) and A1298C (rs1801131) was done by PCR-restriction fragment length polymorphism. 29600437

2018

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE Our study provided evidence that hyperhomocysteinemia (HHcy) and MTHFR C677T polymorphism were associated with IS. 29390494

2017

dbSNP: rs1188383936
rs1188383936
F2
0.100 GeneticVariation BEFREE Risk factors reviewed include myeloproliferative neoplasms (MPNs) and their related gene mutations, anti-phospholipid syndrome, paroxysmal nocturnal haemoglobinuria (PNH), hyperhomocysteinaemia and 5,10-methylenetetrahydrofolate reductase (MTHFR) C677T mutation, factor V Leiden (FVL) and prothrombin G20210A mutations, inherited anti-thrombin, protein C and protein S deficiencies, pregnancy and puerperium, poverty, and family history. 27734511

2016

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE To evaluate the genetic polymorphism of MTHFR C677T among β-TM patients and its prospective contribution to Hhcy and related oxidative changes. 27187171

2016

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE MTHFR C677T and hyperhomocysteinemia have been identified as risk factors for autism worldwide. 27755291

2016

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE To investigate the distribution of MTHFR C677T and A1298C as well as PON1 Q192R gene polymorphisms, known to be involved in hyperhomocysteinemia-related cardiovascular risk, in elite athletes. 26282718

2016

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE MTHFR C677T is a common gene polymorphism that has been shown to be associated with hyperhomocysteinemia. 28002332

2016

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE The interaction analysis showed that age and peripheral arterial disease played an interactive role in the association between HHcy and AAA, while drinking status played an interactive role in the association between MTHFR C677T polymorphism and AAA. 26865327

2016

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE The meta-analysis suggests that MTHFR C677T genetic polymorphism is significantly associated with susceptibility to IS, which provides evidence supporting hyperhomocysteinemia as a risk factor for stroke. 26776436

2016

dbSNP: rs397507444
rs397507444
0.100 GeneticVariation BEFREE To investigate the distribution of MTHFR C677T and A1298C as well as PON1 Q192R gene polymorphisms, known to be involved in hyperhomocysteinemia-related cardiovascular risk, in elite athletes. 26282718

2016

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE There are limited data on the role of methylenetetrahydrofolate reductase C677T polymorphism and hyperhomocysteinemia as risk factors for cerebral venous thrombosis in Iranian population. 26083986

2015

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE The aim of this study was to evaluate the OpenArray platform for genetic testing of blood donors and to assess the genotype frequencies of nucleotide-polymorphisms (SNPs) associated with venous thrombosis (G1691A and G20210A), hyperhomocysteinemia (C677T, A1298C), and hereditary hemochromatosis (C282Y, H63D and S65C) in blood donors from Sao Paulo, Brazil. 25955572

2015

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE Of the 58 patients, 30 had factor V Leiden mutation (5 homozygous, 25 heterozygous), 16 had prothrombin gene mutation, 24 had methylenetetrahydrofolate reductase C677T mutation (5 homozygous, 19 heterozygous), 18 had protein C deficiency, 17 had protein S deficiency, 14 had antithrombin III deficiency and 13 had hyperhomocysteinaemia. 25326427

2015

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE With an excellent sensitivity and a modest specificity, C677T could be a useful screening marker for severe HHcy. 24459043

2015

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE The methylenetetrahydrofolate reductase (MTHFR) 677C>T and 1298A>C polymorphisms, which are associated with hyperhomocysteinemia and nitric oxide (NO) deficiency (which is related to atherothrombosis and cerebral ischemia), have not been studied in moyamoya disease. 25098357

2014

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE A thrombophilic evaluation was performed, revealing hyperhomocysteinemia and methylenetetrahydrofolate reductase (MTHFR) variants (C677T and A1298C). 24923843

2014

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE 5,10-methylenetetrahydrofolate reductase (MTHFR) is a folate-dependent enzyme that catalyzed remethylation of homocysteine (Hcy) and the MTHFR C677T polymorphism makes the MTHFR enzyme thermolabile causing hyperhomocysteinemia. 24052451

2014

dbSNP: rs1217691063
rs1217691063
0.100 GeneticVariation BEFREE The MTHFR C677T polymorphism was not related to SVD and LVD, although the TT genotype was an important determinant of hyperhomocysteinemia. 25031284

2014

dbSNP: rs397507444
rs397507444
0.100 GeneticVariation BEFREE to investigate if NAFLD, in subjects referred for nutritional assessment and counselling, has any difference of prevalence and severity when associated with isolated MTHFR A1298C polymorphism and hyperhomocysteinemia. 24488901

2014

dbSNP: rs397507444
rs397507444
0.100 GeneticVariation BEFREE A thrombophilic evaluation was performed, revealing hyperhomocysteinemia and methylenetetrahydrofolate reductase (MTHFR) variants (C677T and A1298C). 24923843

2014