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Glenmark to Commence Another New Phase 3 Clinical Trial India testing on Combination of Favipiravir, Umifenovir Moderate COVID-19 hospitalised patients
The new combination clinical trial will be called FAITH - (Favipiravir plus Umifenovir (efficacy & safety) Trial in an Indian Hospital setting)
Mumbai: Glenmark Pharmaceuticals has announced a new randomized, open-label study to test the combined efficacy of two antiviral drugs Favipiravir and Umifenovir as a potential COVID-19 treatment strategy. The two antiviral drugs have a different mechanism of action, and their combination may demonstrate improved treatment efficacy by effectively tackling high viral loads in patients during the early stage of the disease.
Early administration of a combination of antiviral medications acting by different mechanisms is desirable for the treatment of COVID-19 since the viral load of SARS-CoV-2 peaks around the time of symptom onset. Thus combining antiviral drugs could result in greater clinical effectiveness and could also prevent, or delay, the emergence of resistance.
Favipiravir is an oral antiviral drug approved in Japan since 2014 for the treatment of novel or re-emerging influenza virus infections. It has a unique mechanism of action by which it inhibits viral replication: it is converted into an active phosphoribosylated form (favipiravir-RTP) in cells and recognized as a substrate by viral RNA polymerase, thereby inhibiting RNA polymerase activity that is required for viral replication.
Umifenovir is another oral antiviral drug licensed for the treatment and prophylaxis of influenza A and B infections in Russia and China. Umifenovir impedes the viral attachment to cells and acts as a viral entry inhibitor.
Additionally, it exhibits modulatory effects on the immune system and induces interferon-production. Hence a combined use of Favipiravir and Umifenovir acting on different mechanisms offers a comprehensive antiviral cover on pre-entry and post-entry life-cycle of the SARS-CoV-2 virus.
Both Favipiravir and Umifenovir inhibited virus infection in vitro and have shown efficacy in COVID-19 clinical trials. The current Glenmark study will examine whether early administration of a combination of Favipiravir and Umifenovir, both acting by different mechanisms, enhances antiviral efficacy on COVID-19 patients.
Commenting on this development, Dr Monika Tandon, Vice President & Head, Clinical Development Global Specialty/Branded Portfolio, Glenmark Pharmaceuticals Ltd., said, "Combining antiviral agents that have a good safety profile and act on different stages of viral life-cycle is an effective treatment approach to rapidly suppress initial high viral load and lead to an overall improvement in clinical parameters. We consider Glenmark's study will be pivotal in leading to the identification of highly effective and safe treatments against COVID-19 in India. Beyond its many potential patient treatment benefits, we also hope the combination therapy will reduce infection risk amongst medical professionals and healthcare workers by reducing the duration of virus shedding from treated patients."
Further, Mr Sujesh Vasudevan, President, India Formulations, Middle East and Africa business, Glenmark Pharmaceuticals Ltd., mentioned, "This is another step in our effort is to launch a treatment for COVID-19 patients and we are looking at every possibility. We will do all it takes to ensure the accessibility of the product across the country if the clinical trials are successful."
The new combination clinical trial will be called FAITH - (Favipiravir plus Umifenovir (efficacy & safety) Trial in an Indian Hospital setting). 158 hospitalized patients of moderate COVID-19 infection will be enrolled in the combination study and randomized in two groups: one group receiving Favipiravir and Umifenovir (with standard supportive care); and one group receiving Favipiravir along with standard supportive care. Patients in the arm receiving the drug will receive Faviprivir 1800mg bid and Umifenovir 800 mg bid on Day 1. Thereafter patients would receive Faviprivir 800mg bid and Unifenovir 800mg bid for the remaining course of the treatment. Duration of treatment will be 14 days and patients will be discharged after clinical cure and two consecutive negative tests for COVID-19 based on RT-PCR.
Simultaneously, Glenmark is also conducting phase 3 clinical trials of Favipiravir as a COVID-19 monotherapy option with 150 patients, enrolled from 9 leading government and private hospitals across the country. So far 30 patients have been randomised.
"The monotherapy phase 3 clinical trial results are expected by July/August 2020", Glenmark stated in its release
Read also: Glenmark begins Phase 3 Clinical Trials on Antiviral Favipiravir for coronavirus in India
Ruchika Sharma joined Medical Dialogue as an Correspondent for the Business Section in 2019. She covers all the updates in the Pharmaceutical field, Policy, Insurance, Business Healthcare, Medical News, Health News, Pharma News, Healthcare and Investment. She has completed her B.Com from Delhi University and then pursued postgraduation in M.Com. She can be contacted at editorial@medicaldialogues.in Contact no. 011-43720751