Table 7.

Comparison of serum homocysteine levels with different genotypes

Genes	1/1a	1/2b	2/2c	F	P
MTHFR C677T	15.7±6.3	15.2±4.5	13.25±3.7	0.38	0.69
MTHFR A1298C	15.14±5.7	17.44±5.8	-	2.13	0.15
MTR A2756G	14.39±5.9	16.17±5.3	18.03±8.07	1.7	0.19
MTRR A66G	16.33±4.5	15.20±5.6	15.68±6.15	0.15	0.86
RFC I G80A	17.02±5.4	14.45±6.2	16.19±4.9	2.1	0.13
CBS844ins68	15.56±6.1	15.36±5.2	-	0.01	0.92

MTHFR: Methylenetetrahydrofolate reductase, MTR: Methionine and enzyme methionine synthase, MTRR: Methionine synthase reductase, RFC 1: Reduced folate carrier 1, CBS: Cystathionine-β-synthase, a: Homozygous wild; b: Heterozygous mutant; c: Homozygous mutant