PMID- 16280695 OWN - NLM STAT- MEDLINE DCOM- 20060110 LR - 20200930 IS - 1525-4135 (Print) IS - 1525-4135 (Linking) VI - 40 IP - 4 DP - 2005 Dec 1 TI - Safety of enfuvirtide in combination with an optimized background of antiretrovirals in treatment-experienced HIV-1-infected adults over 48 weeks. PG - 413-21 AB - BACKGROUND: Antiretroviral tolerability is a critical factor contributing to treatment outcome. The T-20 Versus Optimized Background Regimen Only (TORO) studies assessed the safety and efficacy of enfuvirtide in treatment-experienced HIV-1-infected patients. METHODS: A total of 997 patients were randomized at a 2:1 ratio to an optimized background antiretroviral regimen plus enfuvirtide (n = 663) or an optimized background regimen alone (control group; n = 334). Control patients could switch to enfuvirtide on virologic failure. RESULTS: In total, 26.5% of patients randomized to enfuvirtide and 36.6% to the control group discontinued study treatment before week 48; the percentage of patients withdrawn for safety reasons (including adverse events [AEs], deaths, and laboratory abnormalities) was 14.0% in the enfuvirtide group and 11.6% in the control group. Injection site reactions (ISRs) occurred in 98% of enfuvirtide patients and led to treatment discontinuation in 4.4%. Treatment-related (defined as possibly, probably, or remotely) AE rates per 100 patient-years were lower with enfuvirtide (96.2) than in the control group (149.9); diarrhea, nausea, and fatigue, the most frequently reported AEs, were significantly less frequent with enfuvirtide than in the control group. Pneumonia was significantly more frequent in patients treated with enfuvirtide (6.7 vs. 0.6 events per 100 patient-years), although the incidence was within expected ranges for this population. Lymphadenopathy was also higher in enfuvirtide-treated patients (7.1 vs. 1.2 events per 100 patient-years) for control patients. CONCLUSION: The addition of enfuvirtide to an optimized background regimen does not exacerbate AEs commonly associated with antiretrovirals. ISRs limited treatment in <5% of patients. FAU - Trottier, Benoit AU - Trottier B AD - Clinique Medicale l'Actuel, Montreal, Quebec, Canada. trottier@lactuel.ca FAU - Walmsley, Sharon AU - Walmsley S FAU - Reynes, Jacques AU - Reynes J FAU - Piliero, Peter AU - Piliero P FAU - O'Hearn, Mary AU - O'Hearn M FAU - Nelson, Mark AU - Nelson M FAU - Montaner, Julio AU - Montaner J FAU - Lazzarin, Adriano AU - Lazzarin A FAU - Lalezari, Jacob AU - Lalezari J FAU - Katlama, Christine AU - Katlama C FAU - Henry, Keith AU - Henry K FAU - Cooper, David AU - Cooper D FAU - Clotet, Bonaventura AU - Clotet B FAU - Arasteh, Keikawus AU - Arasteh K FAU - Delfraissy, Jean-Francois AU - Delfraissy JF FAU - Stellbrink, Hans-Jurgen AU - Stellbrink HJ FAU - Lange, Joep AU - Lange J FAU - Kuritzkes, Daniel AU - Kuritzkes D FAU - Eron, Joseph J Jr AU - Eron JJ Jr FAU - Cohen, Calvin AU - Cohen C FAU - Kinchelow, Tosca AU - Kinchelow T FAU - Bertasso, Anne AU - Bertasso A FAU - Labriola-Tompkins, Emily AU - Labriola-Tompkins E FAU - Shikhman, Anna AU - Shikhman A FAU - Atkins, Belinda AU - Atkins B FAU - Bourdeau, Laurence AU - Bourdeau L FAU - Natale, Christopher AU - Natale C FAU - Hughes, Fiona AU - Hughes F FAU - Chung, Jain AU - Chung J FAU - Guimaraes, Denise AU - Guimaraes D FAU - Drobnes, Claude AU - Drobnes C FAU - Bader-Weder, Silvia AU - Bader-Weder S FAU - Demasi, Ralph AU - Demasi R FAU - Smiley, Lynn AU - Smiley L FAU - Salgo, Miklos P AU - Salgo MP LA - eng PT - Clinical Trial PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't PL - United States TA - J Acquir Immune Defic Syndr JT - Journal of acquired immune deficiency syndromes (1999) JID - 100892005 RN - 0 (Anti-HIV Agents) RN - 0 (HIV Envelope Protein gp41) RN - 0 (HIV Fusion Inhibitors) RN - 0 (Peptide Fragments) RN - 19OWO1T3ZE (Enfuvirtide) SB - IM MH - Adult MH - Anti-HIV Agents/*therapeutic use MH - Diarrhea MH - Drug Therapy, Combination MH - Enfuvirtide MH - Fatigue MH - HIV Envelope Protein gp41/administration & dosage/*adverse effects/therapeutic use MH - HIV Fusion Inhibitors/administration & dosage/*adverse effects/therapeutic use MH - HIV Infections/*drug therapy MH - *HIV-1 MH - Humans MH - Lymphatic Diseases MH - Nausea MH - Peptide Fragments/administration & dosage/*adverse effects/therapeutic use MH - Pneumonia EDAT- 2005/11/11 09:00 MHDA- 2006/01/13 09:00 CRDT- 2005/11/11 09:00 PHST- 2005/11/11 09:00 [pubmed] PHST- 2006/01/13 09:00 [medline] PHST- 2005/11/11 09:00 [entrez] AID - 00126334-200512010-00005 [pii] AID - 10.1097/01.qai.0000185313.48933.2c [doi] PST - ppublish SO - J Acquir Immune Defic Syndr. 2005 Dec 1;40(4):413-21. doi: 10.1097/01.qai.0000185313.48933.2c.