PMID- 24964392 OWN - NLM STAT- MEDLINE DCOM- 20150805 LR - 20220331 IS - 2040-2058 (Electronic) IS - 1359-6535 (Linking) VI - 19 IP - 6 DP - 2014 TI - Bioequivalence of a darunavir/cobicistat fixed-dose combination tablet versus single agents and food effect in healthy volunteers. PG - 597-606 LID - 10.3851/IMP2814 [doi] AB - BACKGROUND: Darunavir requires pharmacokinetic enhancement to increase its bioavailability. Cobicistat is potentially an alternative pharmacokinetic booster to ritonavir. Bioequivalence of a darunavir/cobicistat fixed-dose combination (FDC) versus darunavir and cobicistat co-administered as single agents and the effect of a high-fat meal on the pharmacokinetics of the FDC were evaluated. METHODS: In this Phase I, open-label, randomized, three-panel, crossover study (NCT01619527), healthy volunteers received a single dose of darunavir (800 mg) with cobicistat (150 mg) as either an FDC or as single agents co-administered under fasted (panel 1, n=74) or fed (breakfast, panel 2, n=40) conditions, or as the FDC under fasted versus fed (high-fat breakfast) conditions (panel 3, n=19), with a >/=7 day washout period between treatments. Pharmacokinetic profiles, safety and tolerability were assessed. RESULTS: 90% confidence intervals of the least square mean ratios for darunavir and cobicistat maximum plasma concentration and area under the plasma concentration-time curve (AUC) were all within 80.00% and 125.00% in panels 1 and 2. Administration of the FDC with a high-fat breakfast significantly increased darunavir maximum plasma concentration 2.27-fold and AUC 1.63-1.70-fold, whereas cobicistat pharmacokinetics were unaffected. No volunteers discontinued due to adverse events (AEs). All AEs were grade 1 or 2. Overall, 27 (20%) and 26 (20%) volunteers had >/=1 AE at least possibly related to darunavir and cobicistat, respectively. CONCLUSIONS: Bioequivalence of the darunavir/cobicistat 800/150-mg FDC was demonstrated versus darunavir and cobicistat co-administered as single agents under fasted or fed conditions. Food increased darunavir exposure, therefore, darunavir/cobicistat should be administered with food. FAU - Kakuda, Thomas N AU - Kakuda TN AD - Janssen Research & Development, LLC, Titusville, NJ, USA. tkakuda@its.jnj.com. FAU - Van De Casteele, Tom AU - Van De Casteele T FAU - Petrovic, Romana AU - Petrovic R FAU - Neujens, Mark AU - Neujens M FAU - Salih, Hiba AU - Salih H FAU - Opsomer, Magda AU - Opsomer M FAU - Hoetelmans, Richard Mw AU - Hoetelmans RM LA - eng PT - Clinical Trial, Phase I PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20140625 PL - England TA - Antivir Ther JT - Antiviral therapy JID - 9815705 RN - 0 (Carbamates) RN - 0 (Drug Combinations) RN - 0 (Sulfonamides) RN - 0 (Thiazoles) RN - LW2E03M5PG (Cobicistat) RN - YO603Y8113 (Darunavir) SB - IM MH - Administration, Oral MH - Adolescent MH - Adult MH - Carbamates/administration & dosage/adverse effects/pharmacokinetics/*pharmacology MH - Cobicistat MH - Darunavir MH - *Drug Combinations MH - Drug Monitoring MH - Female MH - *Food/adverse effects MH - *Healthy Volunteers MH - Humans MH - Male MH - Middle Aged MH - Sulfonamides/administration & dosage/adverse effects/pharmacokinetics/*pharmacology MH - Therapeutic Equivalency MH - Thiazoles/administration & dosage/adverse effects/pharmacokinetics/*pharmacology MH - Young Adult EDAT- 2014/06/26 06:00 MHDA- 2015/08/06 06:00 CRDT- 2014/06/26 06:00 PHST- 2014/05/06 00:00 [accepted] PHST- 2014/06/26 06:00 [entrez] PHST- 2014/06/26 06:00 [pubmed] PHST- 2015/08/06 06:00 [medline] AID - 10.3851/IMP2814 [doi] PST - ppublish SO - Antivir Ther. 2014;19(6):597-606. doi: 10.3851/IMP2814. Epub 2014 Jun 25.