CCR5 and digestive system disorder: The distribution of the CCR5 59029 A/G polymorphism genotypes was in Hardy-Weinberg equilibrium in patients with digestive disease (χ2 = 0.001; DF = 1; p = 0.979) and in the control group (χ2 = 2.160; DF = 1; p = 0.142) whereas for the group of patients with CCHD it was outside of the Hardy-Weinberg equilibrium (χ2 = 10.722; DF = 1; p = 0.001).