PMID- 27717999 OWN - NLM STAT- MEDLINE DCOM- 20170227 LR - 20181202 IS - 1432-1041 (Electronic) IS - 0031-6970 (Linking) VI - 73 IP - 1 DP - 2017 Jan TI - Effect of bosutinib on the absorption of dabigatran etexilate mesylate, a P-glycoprotein substrate, in healthy subjects. PG - 57-63 LID - 10.1007/s00228-016-2115-0 [doi] AB - PURPOSE: Bosutinib, a dual Src and Abl tyrosine kinase inhibitor for the treatment of chronic myeloid leukemia, demonstrated concentration-dependent inhibitory effects on P-glycoprotein (P-gp)-mediated digoxin efflux in vitro, suggesting that bosutinib may inhibit P-gp substrates. The effect of bosutinib on dabigatran etexilate mesylate (EM) absorption, a P-gp substrate, was evaluated. METHODS: In this open-label, randomized, single-dose, one-cohort, two-sequence, two-period crossover study, healthy, fed subjects received dabigatran EM (150 mg x 1 orally) alone or 1 h after receiving bosutinib tablets (100 mg x 5 orally). RESULTS: Dabigatran EM monotherapy and concurrent administration of dabigatran EM with bosutinib resulted in similar values for concentration time curves from time zero extrapolated to infinity (AUC(inf)), but slightly lower maximum plasma concentration (C (max)) values (AUC(inf), 1182 and 1186 ng.h/mL, respectively; C (max), 129.8 and 114.1 ng/mL). The time to maximum concentration for dabigatran was 2.99 and 3.99 h for combination therapy. The ratio of the adjusted geometric means (test/reference) of dabigatran AUC(inf) and C (max) (90 % confidence interval) were 101.4 % (89.6-114.9 %) and 89.7 % (77.8-103.4 %), respectively, following administration of dabigatran EM with bosutinib (test) relative to dabigatran EM administered alone (reference). Six subjects receiving combination treatment reported a total of seven adverse events (AEs) versus none for subjects receiving monotherapy alone. All AEs were mild to moderate and considered treatment related. CONCLUSION: These data demonstrate that single doses of bosutinib do not affect dabigatran exposure, suggesting that bosutinib is not a clinical inhibitor of P-gp. TRIAL REGISTRATION: ClinicalTrials.gov NCT02102633. https://clinicaltrials.gov/ct2/show/NCT02102633?term=NCT02102633&rank=1. FAU - Hsyu, Poe-Hirr AU - Hsyu PH AD - Pfizer Inc, 10646 Science Center Drive, La Jolla, CA, 92121, USA. Poe-Hirr.Hysu@pfizer.com. FAU - Pignataro, Daniela Soriano AU - Pignataro DS AD - Pfizer Inc, Walton Oaks, Dorking Road, Surrey, KT20 7NS, UK. FAU - Matschke, Kyle AU - Matschke K AD - Pfizer Inc, 500 Arcola Road, Collegeville, PA, 19426, USA. LA - eng SI - ClinicalTrials.gov/NCT02102633 PT - Clinical Trial, Phase I PT - Journal Article PT - Randomized Controlled Trial DEP - 20161007 PL - Germany TA - Eur J Clin Pharmacol JT - European journal of clinical pharmacology JID - 1256165 RN - 0 (ATP Binding Cassette Transporter, Subfamily B, Member 1) RN - 0 (Aniline Compounds) RN - 0 (Antineoplastic Agents) RN - 0 (Antithrombins) RN - 0 (Nitriles) RN - 0 (Protein Kinase Inhibitors) RN - 0 (Quinolines) RN - 5018V4AEZ0 (bosutinib) RN - I0VM4M70GC (Dabigatran) SB - IM MH - ATP Binding Cassette Transporter, Subfamily B, Member 1/metabolism MH - Adult MH - Aniline Compounds/*pharmacology MH - Antineoplastic Agents/*pharmacology MH - Antithrombins/adverse effects/blood/*pharmacokinetics MH - Area Under Curve MH - Cross-Over Studies MH - Dabigatran/adverse effects/blood/*pharmacokinetics MH - Drug Interactions MH - Female MH - Healthy Volunteers MH - Humans MH - Intestinal Absorption/drug effects MH - Male MH - Middle Aged MH - Nitriles/*pharmacology MH - Protein Kinase Inhibitors/*pharmacology MH - Quinolines/*pharmacology OTO - NOTNLM OT - Aprepitant OT - Bosutinib OT - Dabigatran OT - Drug-drug interactions OT - Pharmacokinetics OT - Tyrosine kinase inhibitor EDAT- 2016/10/09 06:00 MHDA- 2017/02/28 06:00 CRDT- 2016/10/09 06:00 PHST- 2016/05/19 00:00 [received] PHST- 2016/08/05 00:00 [accepted] PHST- 2016/10/09 06:00 [pubmed] PHST- 2017/02/28 06:00 [medline] PHST- 2016/10/09 06:00 [entrez] AID - 10.1007/s00228-016-2115-0 [pii] AID - 10.1007/s00228-016-2115-0 [doi] PST - ppublish SO - Eur J Clin Pharmacol. 2017 Jan;73(1):57-63. doi: 10.1007/s00228-016-2115-0. Epub 2016 Oct 7.