Further subgroup analyses according to ethnicity of study participants and type of disease demonstrated that the rs833061 polymorphism was significantly correlated with the risk of CHD in Asians under additive genetic model, and the rs3025039 polymorphism was significantly correlated with the risk of Tetralogy of Fallot (TOF) in dominant, recessive and allele models.
Genotype CT of rs3025039, TT of rs2305948, and AA of rs1873077 were associated with a reduced risk of CHD when smoking, alcohol intake and diabetes were considered, while homozygote GG of rs1570360 might elevate the susceptibility to CHD (all P < 0.05) for patients who were addicted to smoking or those with hypertension.