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Tenofovir Alafenamide Kidney Toxicity Profile

Andrew Zolopa talks about the Kidney Toxicity Provile of Tenofovir Alafenamide during the Retrovirus Conference in Atlanta, 2013. Tenofovir alafenamide fumarate (TAF), or GS 7340, is a nucleotide reverse transcriptase inhibitor and a novel prodrug of tenofovir. It is under development by Gilead Sciences for use in the treatment of HIV infection. Closely related to the commonly used reverse-transcriptase inhibitor tenofovir disoproxil fumarate (Viread), TAF has greater antiviral activity and better distribution into lymphoid tissues than that agent.[1][2] Gilead has announced a phase 3 clinical trial evaluating a single-tablet regimen combining GS-7340 with cobicistat, emtricitabine and elvitegravir[3] and plans to coformulate the drug with cobicistat, emtricitabine and the protease inhibitor darunavir.[4][5][6] In a 48 week study comparing Elvitegravir/cobicistat/emtricitabine/tenofovir disoproxil fumarate to elvitegravir/cobicistat/emtricitabine/GS 7340, the results showed the prodrug to be non inferior to the established agent, but at much lower dosages and with lower incidence of adverse side effects such as impaired kidney function.