PMID- 29481486 OWN - NLM STAT- MEDLINE DCOM- 20190502 LR - 20211204 IS - 1944-7884 (Electronic) IS - 1525-4135 (Print) IS - 1525-4135 (Linking) VI - 78 IP - 2 DP - 2018 Jun 1 TI - Brief Report: Efficacy and Safety of Switching to Coformulated Elvitegravir, Cobicistat, Emtricitabine, and Tenofovir Alafenamide (E/C/F/TAF) in Virologically Suppressed Women. PG - 209-213 LID - 10.1097/QAI.0000000000001663 [doi] AB - BACKGROUND: The integrase inhibitor regimen [elvitegravir/cobicistat/emtricitabine/tenofovir disoproxil fumarate (TDF)] demonstrated superior efficacy when compared with a protease inhibitor regimen [ritonavir-boosted atazanavir (ATV + RTV) and FTC/TDF] in 575 treatment-naive women at week 48. We investigated the efficacy, safety, and tolerability of switching to a TAF-based, single-tablet regimen containing elvitegravir, cobicistat, FTC, and tenofovir alafenamide (E/C/F/TAF) versus remaining on ATV + RTV plus FTC/TDF. METHODS: After completing the initial randomized, blinded phase, virologically suppressed (HIV-1 RNA <50 copies/mL) women on ATV + RTV plus FTC/TDF were rerandomized (3:1) to receive open-label E/C/F/TAF versus remaining on their current regimen. The primary end point was proportion of participants with plasma HIV-1 RNA <50 copies per milliliter at week 48 (U.S. FDA snapshot algorithm), with a prespecified noninferiority margin of 12%. Safety [adverse events (AEs)] and tolerability were also assessed. RESULTS: Of 575 women originally randomized and treated in the blinded phase, 159 were rerandomized to switch to E/C/F/TAF and 53 to remain on ATV + RTV plus FTC/TDF. At week 48, virologic suppression was maintained in 150 (94%) of women on E/C/F/TAF and 46 (87%) on ATV + RTV plus FTC/TDF [difference 7.5% (95% confidence interval -1.2% to 19.4%)], demonstrating noninferiority of E/C/F/TAF to ATV + RTV and FTC/TDF. Incidence of AEs was similar between groups; study drug-related AEs were more common with E/C/F/TAF (11% versus 4%). CONCLUSIONS: Switching to E/C/F/TAF was noninferior to continuing ATV + RTV plus FTC/TDF in maintaining virologic suppression and was well tolerated at 48 weeks. FAU - Hodder, Sally AU - Hodder S AD - West Virginia University Health Sciences Center, Morgantown, WV. FAU - Squires, Kathleen AU - Squires K AD - Division of Infectious Diseases, Thomas Jefferson University, Philadelphia, PA. FAU - Kityo, Cissy AU - Kityo C AD - Joint Clinical Research Centre, Kampala, Uganda. FAU - Hagins, Debbie AU - Hagins D AD - Georgia Department of Public Health, Coastal Health District, Chatham Care Center, Savannah, GA. FAU - Avihingsanon, Anchalee AU - Avihingsanon A AD - HIV Netherlands Australia Thailand Research Collaboration, The Thai Red Cross AIDS Research Centre. AD - Faculty Of Medicine, Chulalongkorn University, Bangkok, Thailand. FAU - Kido, Anna AU - Kido A AD - Departments of Clinical Research, Biometrics, and Virology, Gilead Sciences, Inc., Foster City, CA. FAU - Jiang, Shuping AU - Jiang S AD - Departments of Clinical Research, Biometrics, and Virology, Gilead Sciences, Inc., Foster City, CA. FAU - Kulkarni, Rima AU - Kulkarni R AD - Departments of Clinical Research, Biometrics, and Virology, Gilead Sciences, Inc., Foster City, CA. FAU - Cheng, Andrew AU - Cheng A AD - Departments of Clinical Research, Biometrics, and Virology, Gilead Sciences, Inc., Foster City, CA. FAU - Cao, Huyen AU - Cao H AD - Departments of Clinical Research, Biometrics, and Virology, Gilead Sciences, Inc., Foster City, CA. LA - eng GR - U54 GM104942/GM/NIGMS NIH HHS/United States PT - Journal Article PT - Randomized Controlled Trial 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 (Drug Combinations) RN - 0 (Integrase Inhibitors) RN - 0 (Protease Inhibitors) RN - 0 (Quinolones) RN - 0 (RNA, Viral) RN - 4GDQ854U53 (elvitegravir) RN - 99YXE507IL (Tenofovir) RN - EL9943AG5J (tenofovir alafenamide) RN - G70B4ETF4S (Emtricitabine) RN - JAC85A2161 (Adenine) RN - LW2E03M5PG (Cobicistat) RN - OF5P57N2ZX (Alanine) SB - IM MH - Adenine/administration & dosage/*analogs & derivatives/pharmacology MH - Adult MH - Alanine MH - Anti-HIV Agents/administration & dosage/*pharmacology MH - Antiretroviral Therapy, Highly Active/methods MH - Cobicistat/administration & dosage/*pharmacology MH - Double-Blind Method MH - Drug Combinations MH - Drug Resistance, Viral MH - Drug-Related Side Effects and Adverse Reactions MH - Emtricitabine/administration & dosage/*pharmacology MH - Female MH - HIV Infections/*drug therapy MH - HIV-1 MH - Humans MH - Integrase Inhibitors/pharmacology MH - Protease Inhibitors/pharmacology MH - Quinolones/administration & dosage/*pharmacology MH - RNA, Viral/blood MH - Tenofovir/analogs & derivatives PMC - PMC6425939 MID - NIHMS960887 EDAT- 2018/02/27 06:00 MHDA- 2019/05/03 06:00 PMCR- 2019/06/01 CRDT- 2018/02/27 06:00 PHST- 2018/02/27 06:00 [pubmed] PHST- 2019/05/03 06:00 [medline] PHST- 2018/02/27 06:00 [entrez] PHST- 2019/06/01 00:00 [pmc-release] AID - 10.1097/QAI.0000000000001663 [doi] PST - ppublish SO - J Acquir Immune Defic Syndr. 2018 Jun 1;78(2):209-213. doi: 10.1097/QAI.0000000000001663.