IFNA1 and Cirrhosis: Additionally, in our present study, SVR in our whole cohort was significantly associated with HCV genotype 2/3/6, absence of cirrhosis, and lower HCV RNA level (<600 IU/mL × 103), However, the major factors of demography and anthropometry (age, gender, and body weight) and clinical basic characteristics (cirrhosis, the pretreatment ALT, and HCV RNA levels) of the three treatment groups with different peg-IFN α-2a dose were similar.