|
Complete Trisomy 21 Syndrome
|
|
0.100 |
GeneticVariation
|
BEFREE |
The MTR A2756G polymorphism is associated with an increase of plasma homocysteine concentration in Brazilian individuals with Down syndrome.
|
18060320 |
2008 |
|
Complete Trisomy 21 Syndrome
|
|
0.100 |
GeneticVariation
|
BEFREE |
The case-control study revealed association of the polymorphism with increased folate levels, and a possible interaction with the methionine synthase (MTR) c.2756A>G one, that resulted in a borderline significant maternal risk of birth of a child with DS for the double heterozygous MTR 2756AG/MTRR 66AG genotype [OR 1.79 (95 % CI 1.00-3.18)].
|
24965145 |
2014 |
|
Malignant neoplasm of breast
|
|
0.100 |
GeneticVariation
|
BEFREE |
We evaluated case-control association of MTHFR C677T, A1298C, and MTR A2756G polymorphisms for cases strata-defined by promoter methylation status for each of three genes, E-cadherin, p16, and RAR-beta2 in breast cancer; in addition, we evaluated case-case comparisons of the likelihood of promoter methylation in relation to genotypes using a population-based case-control study conducted in Western New York State.
|
19240236 |
2009 |
|
Malignant neoplasm of breast
|
|
0.100 |
GeneticVariation
|
BEFREE |
In conclusion, the findings suggest that MTR A2756G polymorphism is not associated with altered susceptibility to breast cancer, while the observed decreased risk in Caucasians, PB subgroup, and large studies and increased risk in small studies may be due to selection bias or other unknown factors.
|
23845785 |
2013 |
|
Down Syndrome
|
|
0.100 |
GeneticVariation
|
BEFREE |
In the present study, we determined polymorphisms of MTHFR A222V (677C > T), MTHFR E429A (1298A > C), MTRR I22M (66A > G), MTR D919G (2756A > G), and CBS 844ins68 and total plasma homocysteine levels (tHcy) among 154 mothers of children with Down syndrome (DS) and 158 control mothers from Brazil.
|
15889417 |
2005 |
|
Down Syndrome
|
|
0.100 |
GeneticVariation
|
BEFREE |
The MTR A2756G polymorphism is associated with an increase of plasma homocysteine concentration in Brazilian individuals with Down syndrome.
|
18060320 |
2008 |
|
Complete Trisomy 21 Syndrome
|
|
0.100 |
GeneticVariation
|
BEFREE |
Therefore, we carried out a meta-analysis of 26, 17, 9, 15, 9 and 6 case-control studies on the relationship between maternal methylenetetrahydrofolate reductase (MTHFR) C677T and A1298C, methionine synthase (MTR) A2756G, methionine synthase reductase (MTRR) A66G, reduced folate carrier 1 A80G and cystathionine β-synthase 844ins68 polymorphisms and the risk of having a DS offspring.
|
24068460 |
2013 |
|
Malignant neoplasm of breast
|
|
0.100 |
GeneticVariation
|
BEFREE |
Taken together, the results suggest that the MTR A2756G polymorphism may contribute to susceptibility to breast cancer among Europeans.
|
20111902 |
2010 |
|
Breast Carcinoma
|
|
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
|
|
0.100 |
GeneticVariation
|
BEFREE |
The presence of MTR A2756G mutant allele and MTHFR C677T mutant allele in carriers was associated with increased breast cancer risk [odds ration, 3.2 (P=0.16; 95% confidence interval, 0.76-13.9) and 3.9 (P=0.09; 95% confidence interval, 0.93-16.3), respectively].
|
18842997 |
2008 |
|
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
|
|
0.100 |
GeneticVariation
|
BEFREE |
We investigated the association of polymorphisms in MTHFR (rs1801133 and rs1801131) and MTR (rs1805087) with breast cancer risk and their interaction with alcohol consumption in a case-control study--the Western New York Exposures and Breast Cancer study.
|
19706843 |
2009 |
|
Breast Carcinoma
|
|
0.100 |
GeneticVariation
|
BEFREE |
Role of MTHFR C677T and MTR A2756G polymorphisms in thyroid and breast cancer development.
|
27173331 |
2016 |
|
Down Syndrome
|
|
0.100 |
GeneticVariation
|
BEFREE |
Therefore, we carried out a meta-analysis of 26, 17, 9, 15, 9 and 6 case-control studies on the relationship between maternal methylenetetrahydrofolate reductase (MTHFR) C677T and A1298C, methionine synthase (MTR) A2756G, methionine synthase reductase (MTRR) A66G, reduced folate carrier 1 A80G and cystathionine β-synthase 844ins68 polymorphisms and the risk of having a DS offspring.
|
24068460 |
2013 |
|
Complete Trisomy 21 Syndrome
|
|
0.100 |
GeneticVariation
|
BEFREE |
In conclusion, the presence of three or more polymorphic alleles for MTHFR C677T, MTHFR A1298C, MTR A2756G, and RFC1 A80G, and plasma Hcy concentrations higher than 4.99 micromol/L are maternal risk factors for DS.
|
18273817 |
2008 |
|
Complete Trisomy 21 Syndrome
|
|
0.100 |
GeneticVariation
|
BEFREE |
Contradictory findings have been recently published on the evaluation of genetic polymorphisms of methylenetetrahydrofolate reductase (MTHFR 677 C-->T) and methionine synthase reductase (MTRR 66 A-->G) as risk factors for having a child with Down syndrome (DS); however, the influence of polymorphisms of methionine synthase (MTR 2756 A-->G) and of MTHFR 1298 A-->C has never been evaluated.
|
12923861 |
2003 |
|
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 |
|
Down Syndrome
|
|
0.100 |
GeneticVariation
|
BEFREE |
The purpose of the present study was to analyse these findings among the French population and to investigate whether common polymorphisms in genes of the folate and homocysteine pathway, including the MTHFR 677C > T, MTHFR 1298A > C, the methionine synthase (MTR) 2756A > G, the cystathionine beta-synthase (CBS) 844Ins68 and the reduced folate carrier (RFC-1) 80G > A polymorphisms, contribute to the risk of trisomy 21.
|
16115349 |
2005 |
|
Breast Carcinoma
|
|
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 |
|
Breast Carcinoma
|
|
0.100 |
GeneticVariation
|
BEFREE |
MTR c.2756A>G polymorphism may confer protection for BC associated with iAs exposure.
|
28889078 |
2017 |
|
Breast Carcinoma
|
|
0.100 |
GeneticVariation
|
BEFREE |
The presence of MTR A2756G mutant allele and MTHFR C677T mutant allele in carriers was associated with increased breast cancer risk [odds ration, 3.2 (P=0.16; 95% confidence interval, 0.76-13.9) and 3.9 (P=0.09; 95% confidence interval, 0.93-16.3), respectively].
|
18842997 |
2008 |
|
Breast Carcinoma
|
|
0.100 |
GeneticVariation
|
BEFREE |
We did not find a significant effect of the MTHFR A1298C and MTR A2756G on the risk of breast cancer.
|
25366783 |
2014 |
|
Malignant neoplasm of breast
|
|
0.100 |
GeneticVariation
|
BEFREE |
We did not find a significant effect of the MTHFR A1298C and MTR A2756G on the risk of breast cancer.
|
25366783 |
2014 |
|
Breast Carcinoma
|
|
0.100 |
GeneticVariation
|
BEFREE |
We evaluated case-control association of MTHFR C677T, A1298C, and MTR A2756G polymorphisms for cases strata-defined by promoter methylation status for each of three genes, E-cadherin, p16, and RAR-beta2 in breast cancer; in addition, we evaluated case-case comparisons of the likelihood of promoter methylation in relation to genotypes using a population-based case-control study conducted in Western New York State.
|
19240236 |
2009 |
|
Complete Trisomy 21 Syndrome
|
|
0.100 |
GeneticVariation
|
BEFREE |
This study aimed to investigate the role of maternal polymorphisms, as well as their risk genotypes combinations of MTR A2756G, MTRR A66G, CBS 844ins68, and RFC A80G, involved in folate/homocysteine metabolism, as possible risk factors for Down syndrome (DS) in Southern Brazil.
|
21045269 |
2010 |