IL6 and Huntington disease: However, the values predicted by the assumption of the HWE were different to those observed for Il-6 -174 G/C genotype GG, GC, and CC [9 (22.5%), 31 (77.5%), 0 (observed) vs. 15.01 (37.5 %), 18.99 (47.5%), 6.01 (15%) (predicted) (P≤0.001)] in HCV-negative HD patients.