PMID- 37269076 OWN - NLM STAT- MEDLINE DCOM- 20230605 LR - 20230613 IS - 2052-1707 (Electronic) IS - 2052-1707 (Linking) VI - 11 IP - 3 DP - 2023 Jun TI - A phase I, first-in-human study investigating the safety, tolerability, and pharmacokinetics of the maturation inhibitor GSK3739937. PG - e01093 LID - 10.1002/prp2.1093 [doi] LID - e01093 AB - We report the safety and pharmacokinetic properties of the HIV-1 maturation inhibitor GSK3739937 (GSK'937) in healthy participants. This was a phase I, first-in-human, double-blind, randomized, placebo-controlled, single- (part 1) and multiple- (part 2) dose escalation study with an additional open-label relative bioavailability and food effect study (part 3). Participants received oral ascending single doses (10-800 mg) in part 1, up to 18 once-daily 25- to 100-mg or 3 once-weekly 500-mg doses in part 2, and single 100-mg doses as powder-in-bottle or tablet (in fed and fasted states) formulations in part 3. Primary and secondary objectives were safety and pharmacokinetic assessments, respectively. Ninety-one participants were enrolled; 38 reported 81 total adverse events (AEs). All AEs in participants receiving GSK'937 were grade 1 or 2 and resolved during the study. Most drug-related AEs were gastrointestinal (14/17, 82%). The terminal phase half-life of GSK'937 was ~3 days for all doses following single and repeat dosing. Geometric mean maximum concentration and total drug exposures exhibited dose-proportional increases during part 1. Accumulation in exposure following repeat dosing was 6- to 7-fold with daily dosing and ~1.7-fold after weekly treatment, as expected due to the long half-life. Bioavailability of GSK'937 after a meal was 1.35- to 1.40-fold greater as a tablet versus powder-in-bottle and >2-fold higher in fed versus fasted states when provided as a tablet. No unexpected or dose-limiting safety events occurred. Pharmacokinetic parameters of long half-life and accumulation of exposure following repeat dosing suggest the potential for weekly oral dosing. ClinicalTrials.gov identifier: NCT04493684. CI - (c) 2023 ViiV Healthcare. Pharmacology Research & Perspectives published by John Wiley & Sons Ltd on behalf of British Pharmacological Society and American Society for Pharmacology and Experimental Therapeutics. FAU - Benn, Paul D AU - Benn PD AUID- ORCID: 0009-0007-1117-6385 AD - ViiV Healthcare, Brentford, UK. FAU - Zhang, Ying AU - Zhang Y AD - GSK, Collegeville, Pennsylvania, USA. FAU - Kahl, Lesley AU - Kahl L AD - ViiV Healthcare, Brentford, UK. FAU - Greene, Thomas J AU - Greene TJ AD - GSK, Collegeville, Pennsylvania, USA. FAU - Bainbridge, Veronica AU - Bainbridge V AD - GSK, Brentford, UK. FAU - Fishman, Cindy AU - Fishman C AUID- ORCID: 0000-0003-2842-9063 AD - GSK, Collegeville, Pennsylvania, USA. FAU - Wen, Bo AU - Wen B AD - GSK, Collegeville, Pennsylvania, USA. FAU - Gartland, Martin AU - Gartland M AD - ViiV Healthcare, Durham, North Carolina, USA. LA - eng SI - ClinicalTrials.gov/NCT04493684 PT - Clinical Trial, Phase I PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't PL - United States TA - Pharmacol Res Perspect JT - Pharmacology research & perspectives JID - 101626369 RN - 0 (Powders) RN - 0 (Tablets) SB - IM MH - Humans MH - *Powders MH - Administration, Oral MH - Biological Availability MH - Area Under Curve MH - Tablets PMC - PMC10238757 OTO - NOTNLM OT - HIV-1 maturation inhibitor OT - bioavailability OT - dose escalation OT - first-in-human OT - food effect EDAT- 2023/06/03 11:42 MHDA- 2023/06/05 06:42 PMCR- 2023/06/02 CRDT- 2023/06/03 01:02 PHST- 2023/02/28 00:00 [received] PHST- 2023/03/15 00:00 [accepted] PHST- 2023/06/05 06:42 [medline] PHST- 2023/06/03 11:42 [pubmed] PHST- 2023/06/03 01:02 [entrez] PHST- 2023/06/02 00:00 [pmc-release] AID - PRP21093 [pii] AID - 10.1002/prp2.1093 [doi] PST - ppublish SO - Pharmacol Res Perspect. 2023 Jun;11(3):e01093. doi: 10.1002/prp2.1093.