PMID- 28196003 OWN - NLM STAT- MEDLINE DCOM- 20170616 LR - 20211204 IS - 1944-7884 (Electronic) IS - 1525-4135 (Print) IS - 1525-4135 (Linking) VI - 75 IP - 1 DP - 2017 May 1 TI - Antiviral Activity, Safety, and Pharmacokinetics of Bictegravir as 10-Day Monotherapy in HIV-1-Infected Adults. PG - 61-66 LID - 10.1097/QAI.0000000000001306 [doi] AB - OBJECTIVE: To evaluate antiviral activity, safety, and pharmacokinetics of short-term monotherapy with bictegravir (BIC), a novel, potent HIV integrase strand transfer inhibitor (INSTI). DESIGN: Phase 1b, randomized, double-blinded, adaptive, sequential cohort, placebo-controlled study. METHODS: HIV-infected adults not taking antiretroviral therapy were randomized to receive BIC (5, 25, 50, or 100 mg) or placebo once daily for 10 days. Primary endpoint was time-weighted average change from baseline to day 11 (DAVG11) for plasma HIV-1 RNA. HIV-1 RNA, adverse events (AEs), and laboratory assessments were evaluated through day 17. RESULTS: Twenty participants were enrolled (n = 4/group). Mean DAVG11 ranged from -0.92 to -1.61 across BIC doses versus -0.01 for placebo. Significant reductions in plasma HIV-1 RNA from baseline at day 11 were observed for all BIC doses compared with placebo (P < 0.001); mean decreases were 1.45-2.43 log10 copies/mL. Increased BIC exposures correlated with increased reduction in plasma HIV-1 RNA from baseline on day 11. Three participants on BIC (50 or 100 mg) achieved plasma HIV-1 RNA <50 copies/mL by end of study. Median Tmax ranged from 1.0 to 1.8 hours (day 1, postdose) and 1.3-2.7 hours (day 10), with median t1/2 ranging from 15.9 to 20.9 hours. No participant developed primary INSTI-R substitution through day 17. BIC was well tolerated, with no discontinuations because of adverse events. CONCLUSIONS: BIC is a novel, potent, unboosted INSTI that demonstrated rapid, dose-dependent declines in HIV-1 RNA after 10 days of monotherapy. BIC was well tolerated, and displayed rapid absorption and a half-life supportive of once-daily therapy in HIV-infected subjects. FAU - Gallant, Joel E AU - Gallant JE AD - *Southwest CARE Center, Santa Fe, NM; daggerAIDS Research Consortium of Atlanta, Atlanta, GA; double daggerOrlando Immunology Center, Orlando, FL; section signAIDS Arms, Inc., Dallas, TX; and ||Gilead Sciences, Inc., Foster City, CA. FAU - Thompson, Melanie AU - Thompson M FAU - DeJesus, Edwin AU - DeJesus E FAU - Voskuhl, Gene W AU - Voskuhl GW FAU - Wei, Xuelian AU - Wei X FAU - Zhang, Heather AU - Zhang H FAU - White, Kirsten AU - White K FAU - Cheng, Andrew AU - Cheng A FAU - Quirk, Erin AU - Quirk E FAU - Martin, Hal AU - Martin H LA - eng PT - Clinical Trial, Phase I PT - Journal Article PT - Multicenter Study 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 (Amides) RN - 0 (HIV Integrase Inhibitors) RN - 0 (Heterocyclic Compounds, 3-Ring) RN - 0 (Heterocyclic Compounds, 4 or More Rings) RN - 0 (Piperazines) RN - 0 (Placebos) RN - 0 (Pyridones) RN - 0 (RNA, Viral) RN - 8GB79LOJ07 (bictegravir) SB - IM MH - Adolescent MH - Adult MH - Aged MH - Amides MH - Double-Blind Method MH - Drug-Related Side Effects and Adverse Reactions/epidemiology/pathology MH - Female MH - HIV Infections/*drug therapy/virology MH - HIV Integrase Inhibitors/*administration & dosage/*adverse effects/pharmacokinetics/pharmacology MH - HIV-1/*drug effects MH - Heterocyclic Compounds, 3-Ring MH - Heterocyclic Compounds, 4 or More Rings/*administration & dosage/*adverse effects/pharmacokinetics/pharmacology MH - Humans MH - Male MH - Middle Aged MH - Piperazines MH - Placebos/administration & dosage MH - Plasma/chemistry MH - Pyridones MH - RNA, Viral/blood MH - Treatment Outcome MH - Viral Load MH - Young Adult PMC - PMC5389589 COIS- X.W., H.Z., K.W., A.C., E.Q., and H.M., are employees of Gilead and hold stock interest in the company. The remaining authors have no conflicts of interest to disclose. EDAT- 2017/02/15 06:00 MHDA- 2017/06/18 06:00 PMCR- 2017/04/12 CRDT- 2017/02/15 06:00 PHST- 2017/02/15 06:00 [pubmed] PHST- 2017/06/18 06:00 [medline] PHST- 2017/02/15 06:00 [entrez] PHST- 2017/04/12 00:00 [pmc-release] AID - QAIV17457 [pii] AID - 10.1097/QAI.0000000000001306 [doi] PST - ppublish SO - J Acquir Immune Defic Syndr. 2017 May 1;75(1):61-66. doi: 10.1097/QAI.0000000000001306.