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Thoueille, Paul; Saldanha, Susana Alves; Schaller, Fabian; Choong, Eva; Veuve, François; Munting, Aline; Cavassini, Matthias; Braun, Dominique; Günthard, Huldrych F.; Duran Ramirez, Jessy J.; Surial, Bernard; Furrer, Hansjakob; Rauch, Andri; Ustero, Pilar; Calmy, Alexandra; Stöckle, Marcel; Di Benedetto, Caroline; Bernasconi, Enos; Schmid, Patrick; Marzolini, Catia; Girardin, François R.; Buclin, Thierry; Decosterd, Laurent A.; Guidi, Monia; Abela, I; Aebi‐Popp, K; Anagnostopoulos, A; Battegay, M; Bernasconi, E; Braun, DL; Bucher, HC; Calmy, A; Cavassini, M; Ciuffi, A; Dollenmaier, G; Egger, M; Elzi, L; Fehr, J; Fellay, J; Furrer, H; Fux, CA; Günthard, HF; Hachfeld, A; Haerry, D; Hasse, B; Hirsch, HH; Hoffmann, M; Hösli, I; Huber, M; Jackson‐Perry, D; Kahlert, CR; Kaiser, L; Keiser, O; Klimkait, T; Kouyos, RD; Kovari, H; Kusejko, K; Labhardt, N; Leuzinger, K; Martinez de Tejada, B; Marzolini, C; Metzner, KJ; Müller, N; Nemeth, J; Nicca, D; Notter, J; Paioni, P; Pantaleo, G; Perreau, M; Rauch, A; Salazar‐Vizcaya, L; Schmid, P; Speck, R; Stöckle, M; Tarr, P; Trkola, A; Wandeler, G; Weisser, M; Yerly, S.
Clinical pharmacology and therapeutics, June 2024, 2024-Jun, 2024-06-00, 20240601, Letnik: 115, Številka: 6Journal Article
Long‐acting cabotegravir has been studied mainly in the stringent framework of clinical trials, which does not necessarily reflect the situation of people with HIV (PWH) in routine clinical settings. The present population pharmacokinetic analysis aims to build real‐world reference percentile curves of cabotegravir concentrations, accounting for patient‐related factors that may affect cabotegravir exposure. The second objective is to simulate whether dosing interval adjustments of cabotegravir could be considered in specific subpopulations. Overall, 238 PWH contributed to 1,038 cabotegravir levels (186 during the initial oral administration phase and 852 after intramuscular injection). Cabotegravir pharmacokinetics was best described using a one‐compartment model with distinct first order‐absorption for oral and intramuscular administrations, and identical volume and clearance. Our model showed almost 40% faster absorption and 30% higher clearance than previously reported, resulting in a time to steady‐state of 8 months and an elimination half‐life of 4.6 weeks for long‐acting cabotegravir. Sex and body mass index significantly influenced absorption, and bodyweight affected clearance. Model‐based simulations showed that cabotegravir trough concentrations in females were 25% lower 4 weeks after the intramuscular loading dose, but 42% higher during the late maintenance phase. Finally, simulations indicated that in females, despite significantly higher cabotegravir concentrations, longer intervals between injections may not consistently ensure levels above the 4‐fold protein‐adjusted 90% inhibitory target concentration.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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