Safety and Efficacy of 48 Weeks REP 2139 or REP 2165, Tenofovir Disoproxil, and Pegylated Interferon Alfa-2a in Patients With Chronic HBV Infection Naïve to Nucleos(t)ide Therapy.

Gastroenterology
Michel BazinetAndrew Vaillant

Abstract

Nucleic acid polymers (NAPs) inhibit assembly and secretion of hepatitis B virus (HBV) subviral particles. We performed an open-label, phase 2 study of the safety and efficacy of the NAPs REP 2139 or REP 2165 combined with tenofovir disoproxil fumarate (TDF) and pegylated interferon alfa-2a (pegIFN) in patients with chronic HBV infection who were negative for hepatitis B e antigen. Following 24 weeks TDF therapy, 40 patients were randomly assigned to groups that received 48 weeks of experimental therapy (TDF + pegIFN + REP 2139-Mg or REP 2165-Mg) or 24 weeks of control therapy (TDF + pegIFN) followed by 48 weeks of experimental therapy. Patients were then followed for a treatment-free period of 48 weeks. Primary outcomes were the safety and tolerability of REP 2139-Mg or REP 2165-Mg in combination with TDF + pegIFN compared with TDF + pegIFN alone through the first 48 weeks of therapy and subsequently throughout 48 weeks of NAP-based combination therapy (treatment weeks 24-72 in the experimental group and weeks 48-96 in the control group). Secondary outcomes were reductions in hepatitis B surface antigen (HBsAg) in control and experimental groups over the first 48 weeks of the study and throughout 48 weeks of combination therap...Continue Reading

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Citations

Aug 8, 2020·The Journal of Experimental Medicine·Valeria FumagalliMatteo Iannacone
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