Abstract
Objective. Interferon (IFN)-γ-induced protein-10 (IP-10) serum level has been shown be associated with viral response in chronic hepatitis C (CHC) patients. However, little is known in Chinese population. We determined IP-10 serum levels in Chinese CHC patients undergoing PEG-IFN-based therapy. Predictive role of IP-10 level for virological responses was accessed. Material and methods. IP-10 serum levels were determined in 165 hepatitis C virus (HCV) genotype 1 and 33 genotype 2 patients. Multivariate analysis was performed to screen independent factors for sustained virological response (SVR) prediction. Predictive value of IP-10 level in combination with interleukin 28B (IL28B) genotype or rapid virological response was further investigated. Results. Our study showed that pretreatment IP-10 level was significantly higher in HCV genotype 1 patients. IP-10 levels were independently predictive for SVR with cut-off values of 250.60 pg/ml at baseline or 407.40 pg/ml at week 4. Positive predictive value (PPV) for SVR of low IP-10 level at baseline and IL28B CC genotype was 96.15% and negative predictive value (NPV) was 50.00%. PPV for SVR of low IP-10 level at week 4 and rapid viral response (RVR) was 95.24% and NPV was 50.00%. Conclusion. Together our study indicated that higher IP-10 serum levels were associated with HCV genotype 1 CHC Chinese patients. IP-10 levels at baseline and week 4 were both predictive of SVR and improved predictive performances of IL28B genotype and RVR for SVR.
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