Novel mutations in the reverse transcriptase of HIV-1 reduce susceptibility to phosphonoformate in laboratory and clinical isolates: J. Mellors1, H. Bazmi1, R. Schinazi2, B. Roy3, Y. Hsiov3, E. Arnold3, J. Weir4, D. Mayers4. 1University of Pittsburgh/VAMC, Pittsburgh, PA, 2Emory University/VAMC, Decatur, GA, 3Rutgers University/CAMB, Piscataway, NJ, 4Military Medicine Consortium for Applied Retroviral Research, Rockville, MD, USA