Peg-interferon lambda treatment induces robust innate and adaptive immunity in chronic hepatitis B patients

Sandra Phillips, Sameer Mistry, Antonio Riva, Helen Cooksley, Tanya Hadzhiolova-Lebeau, Slava Plavova, Krum Katzarov, Marieta Simonova, Stephan Zeuzem, Clive Woffendin, Pei Jer Chen, Cheng Yuan Peng, Ting Tsung Chang, Stefan Lueth, Robert De Knegt, Moon Seok Choi, Heiner Wedemeyer, Michael Dao, Chang Wook Kim, Heng Chen ChuMegan Wind-Rotolo, Roger Williams, Elizabeth Cooney, Shilpa Chokshi

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25 Citations (Scopus)


IFN-lambda (IFNλ) is a member of the type III IFN family and is reported to possess anti-pathogen, anti-cancer, and immunomodulatory properties; however, there are limited data regarding its impact on host immune responses in vivo. We performed longitudinal and comprehensive immunosurveillance to assess the ability of pegylated (peg)-IFNλ to augment antiviral host immunity as part of a clinical trial assessing the efficacy of peg-IFNλ in chronic hepatitis B (CHB) patients. These patients were pretreated with directly acting antiviral therapy (entecavir) for 12 weeks with subsequent addition of peg-IFNλ for up to 32 weeks. In a subgroup of patients, the addition of peg-IFNλ provoked high serum levels of antiviral cytokine IL-18. We also observed the enhancement of natural killer cell polyfunctionality and the recovery of a pan-genotypic HBV-specific CD4+ T cells producing IFN-γ with maintenance of HBV-specific CD8+ T cell antiviral and cytotoxic activities. It was only in these patients that we observed strong virological control with reductions in both viral replication and HBV antigen levels. Here, we show for the first time that in vivo peg-IFNλ displays significant immunostimulatory properties with improvements in the main effectors mediating anti-HBV immunity. Interestingly, the maintenance in HBV-specific CD8+ T cells in the presence of peg-IFNλ is in contrast to previous studies showing that peg-IFNa treatment for CHB results in a detrimental effect on the functionality of this important antiviral T cell compartment.

Original languageEnglish
Article number621
JournalFrontiers in Immunology
Issue numberMAY
Publication statusPublished - 2017 May 29

All Science Journal Classification (ASJC) codes

  • Immunology and Allergy
  • Immunology

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