Replicor announces publication of the REP 401 study achieving high rates of virologic control and functional cure in patients with chronic hepatitis B infection
MONTREAL, March 9, 2020 – Replicor Inc., a privately held biopharmaceutical company targeting functional cure for patients with chronic hepatitis B and D infection, announced the publication of the final results of its latest REP 401 study in the prestigious journal Gastroenterology.
The article, entitled “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”, presents the analysis of the safety and efficacy of NAP therapy when added to a backbone of TDF and pegIFN in patients with treatment naïve chronic HBV infection.
The culmination of more than a decade of clinical investigation of NAPs, transitioning from REP 2055 to REP 2139-Mg, the REP 401 study achieved dramatic increases in the incidence of HBsAg loss and seroconversion during therapy (60%) and therapeutic transaminase flares (95%) compared to that observed with TDF + pegIFN alone. Importantly 78% of participants achieved virologic control of HBV of whom 39% further achieved functional cure. These outcomes dramatically improve those achieved by TDF + pegIFN alone and far exceed those observed with any other therapy currently in development in mono or combination therapy.
Dr. Andrew Vaillant, CSO of Replicor commented, “Our substantial body of published data clearly demonstrates that all NAPs using Replicor’s proprietary poly AC technology have very similar activity with similar doses required in humans. However, only NAPs formulated as magnesium chelate complexes such as REP 2139-Mg and REP 2165-Mg have the excellent tolerability and safety required for use with immunotherapy. This combination approach is essential to awaken an effective immune response capable of driving high rates of therapeutic transaminase flares essential for restoring virologic control and functional cure. The successful completion of the REP 401 study paves the way for the long-planned transition of REP 2139-Mg to subcutaneous administration and assessment in combination with other immunotherapies capable of driving HBsAg specific T-cell activation, an activity we believe is a critical component of achieving functional cure.”
The article can be accessed directly at the following link:
Replicor is a privately held biopharmaceutical company with the most advanced animal and human clinical data in the development of the cure for HBV and HDV. The company is dedicated to accelerating the development of an effective treatment for patients with HBV and HBV/HDV co-infection. For further information about Replicor please visit our website at www.replicor.com.作者: StephenW 时间: 2020-3-9 21:15
Hepatitis B Surface Antigen Loss with Tenofovir Disoproxil Fumarate Plus Peginterferon Alfa-2a: Week 120 Analysis.
Ahn SH1, Marcellin P2, Ma X3, Caruntu FA4, Tak WY5, Elkhashab M6, Chuang WL7, Tabak F8, Mehta R9, Petersen J10, Guyer W1, Jump B11, Chan A11, Subramanian M11, Crans G11, Fung S12, Buti M13, Gaeta GB14, Hui AJ15,16, Papatheodoridis G17, Flisiak R18, Chan HLY19.
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Erratum in
Correction to: Hepatitis B Surface Antigen Loss with Tenofovir Disoproxil Fumarate Plus Peginterferon Alfa-2a: Week 120 Analysis. [Dig Dis Sci. 2019]
Abstract
BACKGROUND AND AIMS:
Hepatitis B surface antigen (HBsAg) loss is the ideal clinical endpoint but is achieved rarely during oral antiviral treatment. A current unmet need in CHB management is achievement of HBsAg loss with a finite course of oral antiviral therapy, thereby allowing discontinuation of treatment. Significantly higher rates of HBsAg loss at 72 weeks post-treatment have been demonstrated when tenofovir disoproxil fumarate (TDF) was combined with pegylated interferon (PEG-IFN) for 48 weeks compared with either monotherapy. This analysis provides follow-up data at week 120.
METHODS:
In an open-label, active-controlled study, 740 patients with chronic hepatitis B were randomly assigned to receive TDF plus PEG-IFN for 48 weeks (group A), TDF plus PEG-IFN for 16 weeks followed by TDF for 32 weeks (group B), TDF for 120 weeks (group C), or PEG-IFN for 48 weeks (group D). Efficacy and safety at week 120 were assessed.
RESULTS:
Rates of HBsAg loss at week 120 were significantly higher in group A (10.4%) than in group B (3.5%), group C (0%), and group D (3.5%). Rates of HBsAg loss and HBsAg seroconversion in group A were significantly higher than rates in group C (P < 0.001 for both) or group D (HBsAg loss: P = 0.002; HBsAg seroconversion: P < 0.001).
CONCLUSIONS:
The results of this analysis confirm the results from earlier time points which demonstrate the increased rate of HBsAg loss in patients treated with a finite course of PEG-IFN plus TDF compared with the rates in patients receiving either monotherapy.
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