Glenmark Pharmaceuticals today announced that its Novel Chemical Entity "Revamilast" (GRC 4039) has initiated Phase IIb human dose range finding trials globally. Revamilast is an orally active, potent and selective inhibitor of phosphodiesterase 4 (PDE 4) that is currently being developed by Glenmark for the treatment of chronic inflammatory disorders such as Asthma, Rheumatoid Arthritis (RA) and other inflammatory diseases. The Phase IIb studies that will be carried out will help establish the efficacy and safety of the molecule and will also provide dose range finding data for Revamilast.
Dr. Steffen Stuerzebecher, President & Chief Medical Officer, Glenmark Pharmaceuticals Ltd said "The clinical trials and the animal studies data for Revamilast are promising for both indications i.e. Asthma and Rheumatoid Arthritis. There is a huge unmet need for both these chronic medical conditions globally. For Glenmark, this is a significant development as we have built on more than a decade of experience in the PDE 4 space to progress an exciting molecule to Phase II human trials."
In Phase I studies carried out mainly in the United Kingdom, nearly 150 healthy volunteers have been dosed and no Serious Adverse Events have been noted. The pharmacodynamic evaluation in healthy human volunteers treated with Revamilast suggests a good ex-vivo inhibition of the inflammatory marker TNF-α with maximum inhibition upto 93%. Based on these results and animal model data, it is expected that Revamilast would be beneficial in a variety of inflammatory disorders. Additionally, Revamilast does not appear to be metabolized to carcinogenic metabolites (ADCP N-oxide and ADCP N-oxide epoxide); and plasma samples from a Phase 1 study analyzed for such metabolites of Revamilast, showed no levels were detected in human plasma.
With the completion of several Phase I studies, Glenmark has initiated a global Phase IIb trial for Revamilast in patients with Asthma. Glenmark has already received approval from respective authorities in the UK, Poland, India and Czech Republic to conduct Phase IIb studies. Regulatory submissions have also been completed in Russia. The primary objective of this 12-week, double blind, placebo controlled, dose range finding study is to evaluate the effects of Revamilast at three doses on lung function (FEV1) in nearly 450 patients with chronic persistent Asthma.
Glenmark has also initiated another global Phase IIb trial with Revamilast in patients with Rheumatoid Arthritis. Glenmark has already received approval from the MHRA, UK, India, Poland and the Philippines to conduct Phase IIb studies for Rheumatoid Arthritis. Regulatory submissions have also been completed in Sri Lanka. The objective is to determine the efficacy of three doses of Revamilast compared to placebo in the treatment of more than 400 patients with active Rheumatoid Arthritis who showed an inadequate response to methotrexate.
In parallel to these two clinical studies, Glenmark is also conducting various other clinical and non-clinical studies to ensure timely entry into Phase III trials. Glenmark intends to initiate Phase III trials for at least one indication in the second half of FY 2012-13
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