Total plasma homocysteine and methylenetetrahydrofolate reductase C677T polymorphism in patients with colorectal carcinoma

Table 2 tHcy plasma levels according to C677T MTHFR polymorphism [mean ± SD (μmol/L) (n)]

Group (n)	CC genotype	CT genotype	TT genotype
Control subjects (100)	9.01 ± 2.76 (30)	9.71 ± 2.34 (51)	17.56 ± 10.81df (19)
Cancer patients (93)	11.82 ± 3.09a (32)	12.45 ± 4.46b (40)	16.88 ± 9.25 df (21)

^aP < 0.05,

^bP < 0.01 vs control;

^dP < 0.01 TT vs CC;

^fP < 0.01 TT vs CT.