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  • Title: Retreatment with peginterferon α-2a + ribavirin in patients who failed previous peginterferon α-2b + ribavirin combination therapy.
    Author: Ueda T, Tsuchiya K, Hashimoto S, Inoue T, Enomoto N, Inao M, Tanaka A, Kaito M, Imazeki F, Nishiguchi S, Mochida S, Yokosuka O, Yatsuhashi H, Izumi N, Kudo M, RETRY Study Group.
    Journal: Dig Dis; 2012; 30(6):554-60. PubMed ID: 23258094.
    Abstract:
    BACKGROUND/AIMS: Peginterferon (PEG-IFN) + ribavirin (RBV) combination therapy is the current standard of care for chronic hepatitis C. However, more than half of the patients cannot achieve sustained viral response (SVR). In Japan, the clinical benefit of retreatment with PEG-IFN + RBV combination retreatment is still unknown. METHODS: We collected clinical data in 106 chronic hepatitis C patients who failed to achieve SVR with PEG-IFNα-2b + RBV combination therapy and were retreated with PEG-IFNα-2a + RBV. This retrospective study examined the efficacy of retreatment with PEG-IFNα-2a + RBV by evaluating the time to eradication of hepatitis C virus RNA, early virological response (EVR), and SVR. We compared the results of the previous therapy and retreatment in terms of efficacy and analyzed the factors influencing SVR. RESULTS: The SVR rates in the non-responders and relapsers were 11 and 53%, respectively. EVR and prolonged treatment duration were associated with SVR. We also found that a prior response to PEG-IFN + RBV therapy was more important than the Interleukin-28B genotype for predicting the response to retreatment. CONCLUSIONS: Retreatment with PEG-IFNα-2a + RBV should be considered for relapsers and partial responders. Our results suggest that prolonged administration is also favorable for EVR cases to attain a higher SVR.
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