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Tobira Therapeutics Inc. Announces Phase I Data Demonstrating Pharmacokinetic Properties of TAK-652 for the Treatment of HIV

PRINCETON, N.J. and SAN DIEGO, July 22 /PRNewswire/ -- Tobira Therapeutics Inc., a clinical stage biotechnology company committed to research and product discovery for the treatment of life-threatening and life-altering infectious diseases, today announced pharmacokinetic data and results from two Phase I pharmacokinetic studies for TAK-652, an investigational compound being developed for the treatment of HIV. These data suggest that TAK-652 is rapidly absorbed and demonstrate relatively good oral bioavailability (as shown by the plasma TBR-652 concentration data) and has a long plasma half-life of TBR-652 (approximate mean of 35 hours) supporting once-daily dosing. Mean TBR-652 plasma concentrations were well above the predicted target plasma concentration (2ng/mL) with or without food. In both studies TBR-652 was safe and well tolerated in this healthy subject population when administered over a dose range of 10 mg to 800 mg in 2 tablet formulations. "These two Phase I studies provide encouraging support for TAK-652 as a therapeutic option for the treatment of HIV. We look forward to results from our on-going proof-of-concept study," said James Sapirstein, CEO.

These data were presented at the 5th International Conference on HIV Pathogenesis, Treatment and Prevention, held July 19-23, 2009 in Cape Town, South Africa. Both poster presentations can be viewed at

About Tobira Therapeutics Inc.

Tobira Therapeutics is a private biopharmaceutical company which is focused on developing and commercializing innovative antiviral compounds to treat HIV disease. The company was founded in 2006 by Eckard Weber, MD, a partner at the venture capital firm Domain Associates, to develop novel treatments for HIV disease. Tobira has assembled a highly experienced management team with decades of clinical and commercial development experience specifically in HIV/AIDS drug development.

    Antoinette Bobbitt, Tobira Therapeutics Inc.
    Tel: 609-897-1102

SOURCE Tobira Therapeutics Inc.
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