TY - JOUR AU - Harrer, E. AU - Bäuerle, M. AU - Ferstl, B. AU - Chaplin, I. T. AU - Petzold, B. AU - Mateo, L. AU - Handley, A. AU - Tzatzaris, M. AU - Vollmar, J. AU - Bermann, S. AU - Rittmaier, M. AU - Eismann, K. AU - Miller, S. AU - Kalden, J. R. AU - Spriewald, B. AU - Willbold, D. AU - Harrer, T. TI - Therapeutic vaccination of HIV-1-infected patients on HAART with a recombinant HIV-1 nef-expressing MVA: safety, immunogenicity and influence on viral load during treatment interruption JO - Antiviral therapy VL - 10 SN - 1359-6535 CY - London PB - International Medical Press M1 - PreJuSER-45558 SP - 285 - 300 PY - 2005 N1 - Record converted from VDB: 12.11.2012 AB - The safety and immunogenicity of an HIV-1 nef-expressing modified vaccinia virus Ankara (MVA) was investigated in 14 HIV-1-positive patients (CD4 > 400/mu l) on highly active antiretroviral therapy (HAART). Patients were vaccinated at weeks 0, 4 and 16, followed by interruption of HAART at week 18. MVA-nef was well tolerated except for local reactions, with only mild systemic side effects reported in a few patients. Vaccination with MVA-nef was associated with recognition of new HIV-1 T-cell epitopes (cytotoxic T-lymphocyte epitopes in 9/14 patients, CD4 epitope/recombinant Nef protein in 2/14) and an increase in CD4+ and CD8+ T cells. All patients had been vaccinated against smallpox and a strong T-cell and antibody response to MVA was induced in all patients. After interruption of HAART, viral load rebounded in all patients, but after a median time of 36 (4-76) weeks in 9/14 patients, viraemia remained below the pre-HAART viral load and CD4 counts stayed above the pre-HAART levels. While six patients have remained off therapy for a median time of 64 (57-76) weeks, HAART was resumed in 8/14 patients after a median treatment interruption time of 15 (4-38) weeks. This study has demonstrated that MVA-nef is safe and immunogenic in HIV-1-infected subjects and has provided encouraging data on the potential of therapeutic vaccinations. KW - J (WoSType) LB - PUB:(DE-HGF)16 UR - <Go to ISI:>//WOS:000231962300011 UR - https://juser.fz-juelich.de/record/45558 ER -