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Published on: May 10, 2022
IP-10 in chronic hepatitis C patients treated with high-dose interferon
S B Willemse1, H W Reesink, K Ladee
1Department of Gastroenterology and Hepatology, Academic Medical Centre, Amsterdam, the Netherlands.
Introduction:
Interferon-g-inducible protein-10 (IP-10) serum levels are associated with IL28B genotype and may predict response to interferon÷ribavirin-based therapy in chronic hepatitis C patients. Our aim was to relate IP-10 levels before and during treatment to treatment outcome, viral HCV-RNA kinetics and IL28B genotype.
Patients And Methods:
A cohort of chronic hepatitis C patients was treated with high-dose interferon for six weeks, followed by standard peginterferon÷ ribavirin for 24 or 48 weeks. IP-10 and HCV-RNA levels were frequently determined before, during and after treatment.
Results:
IP-10 levels increased from log2.56 pg÷ml at baseline to log3.48 pg÷ml at Day 1 and gradually diminished thereafter. IP-10 levels at any time point were not statistically different between patients with or without sustained viral response (SVR). Patients with IL28B CC genotype had significantly lower baseline IP-10 levels (p = 0.019) and a higher increase of IP-10 levels from baseline to Day 1 than patients with IL28B non-CC genotypes (p = 0.015). Patients with HCV-RNA decline ≥ 2.28log10 at Day 1 had significantly lower baseline IP-10 levels (p = 0.016) and a higher increase of IP-10 levels from baseline to Day1 (p = 0.047) than patients with HCV-RNA decline of < 2.28log10 at Day 1.
Conclusions:
In patients treated with high induction dose interferon, IP-10 levels at any time point were not predictive for SVR. Low baseline IP-10 levels and a higher increase of IP-10 levels from baseline to Day 1 were associated with IL28B CC genotype and HCV-RNA decline ≥ 2.28log10 at Day 1. This suggests that, in our cohort, for prediction of SVR the added value of IP-10 to IL28B genotype and early viral kinetics is limited.
