MTHFR C677T Controls(n=137) Gastric cancer(n=43)  P  OR MTHFR A1298C Controls(n=78) Gastric cancer(n=35) P  OR
Drinking habit; no         Drinking habit; no        
CC*  69  20 NS   AA*  22  20 0.001 0.18(0.05-0.63)
CT+TT  46  11     AC+CC  30  5    
          yes        
Yes CC  9  4 NS   AA  18  4 0.02  0.24(0.06-0.96)
CT+TT  13  8 NS   AC+CC  8  6 NS  
Milk consumption <3/week         Milk consumption <3/week        
CC* 52  14 NS   AA*  24  12 NS  
CT+TT 29  15   NS NS   AC+CC  24  8    
      ≥3/week        
≥3/week CC 26  10 AA  16  12 NS  
CT+TT 30  4 AC+CC  14  3 NS  
Cheese<2/week         Cheese<2/week        
CC* 49  20 NS   AA*  20  14 NS  
CT+TT 30  12     AC+CC  23  8    
         - ≥2/week        
≥2/week CC 29  4 NS   AA  20  10 NS  
CT+TT 29  7 NS   AC+CC  15  3 NS  
                   
Yogurt<2/week         Yogurt<2/week        
CC* 45  15 NS   AA*  23  10 NS  
CT+TT 14  11     AC+CC  18  6    
          ≥2/week        
≥2/week CC 33  9 NS   AA  17  14 NS  
CT+TT 45  8 NS   AC  20  5 NS  
P was calculated using CC genotype for MTHFR677 as reference, and AA genotype for MTHFR1298 as reference
Table 9: Interaction between MTHFR polymorphisms with drinking habit and dairy product and gastric cancer.