Elvucitabine is a novel nucleoside analog that is being studied as a treatment for patients infected with HIV-1. This Phase II study will enroll 60 HIV-1 naive subjects to assess the efficacy and safety of elvucitabine compared to lamivudine in combination with tenofovir and efavirenz measured by changes in the patient's HIV-RNA level and CD4 cell count. The study treatment will be 12 weeks of blinded study medication followed by an additional 84 weeks of open label treatment if the patient's response to treatment meets certain endpoints. Also there will be assessment of the pharmacokinetics of elvucitabine during the study.

NCT00350272

Conditions

1. HIV Infections

Interventions

1. Drug: elvucitabine
2. Drug: Lamivudine
3. Drug: Tenofovir
4. Drug: Efavirenz

MeSH:HIV Infections

2. Are 18 through 65 years old 3. Have documented HIV-1 infection by written prior history and clinically stable with no AIDS-defining events in the 3 months prior to Screening 4. Have plasma HIV-1 RNA levels greater than or equal to 5000 copies/mL at Screening 5. Are HIV-1 strain sensitive to elvucitabine, lamivudine, emtricitabine as demonstrated by the absence of the M184V, M184I, and D237E mutations by TRUGENE HIV-1 Genotyping Kit 6. Are HIV-1 strain genotypically sensitive to efavirenz (negative for K103 and Y188L mutations) and tenofovir (negative for K65R mutation) by TRUGENE HIV-1 Genotyping Kit 7. Have a CD4 count greater than or equal to 200 cells/mL and less than 500 cells/mL 8. Have acceptable hematologic and chemistry parameters, including the following: - Hemoglobin (Hgb) greater than or equal to 11g/dL - Absolute neutrophil count greater than or equal to 2000 cells/mm3 - Platelets greater than or equal to 125 000/mm3 - Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) less than or equal to 1.5 times the upper limit of normal - Total bilirubin less than or equal to 1.5 times the upper limit of normal - Creatinine within normal range 9. Are capable of understanding and has signed the informed consent document 10. --- M184V --- --- M184I --- --- D237E ---

Subjects must be sensitive to elvucitabine, lamivudine, and emtricitabine as demonstrated by the absence of the M184V, M184I, and D237E mutations by TRUGENE HIV-1 Genotyping Kit. --- M184V --- --- M184I --- --- D237E ---