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Prednisone Has No Effect on the Pharmacokinetics of CYP3A4 Metabolized Drugs - Midazolam and Odanacatib.

Authors :
Marcantonio, Eugene E.
Ballard, Jeanine
Gibson, Christopher R.
Kassahun, Kelem
Palamanda, Jairam
Tang, Cuyue
Evers, Raymond
Liu, Chengcheng
Zajic, Stefan
Mahon, Chantal
Mostoller, Kate
Hreniuk, David
Mehta, Anish
Morris, Denise
Wagner, John A.
Stoch, S. Aubrey
Source :
Journal of Clinical Pharmacology. Nov2014, Vol. 54 Issue 11, p1280-1289. 10p.
Publication Year :
2014

Abstract

We evaluated the effect of prednisone on midazolam and odanacatib pharmacokinetics. In this open-label, 2-period crossover study in healthy male subjects, midazolam 2mg was administered (Day 1) followed by odanacatib 50 mg (Day 1) during Part 1. In Period 2, prednisone 10 mg once daily (qd) was administered on Days 1-28; odanacatib was co-administered on Day 14 and midazolam 2mg was co-administered on Days 1 and 28. Subjects were administered midazolam 2mg on Days 42 and 56. Safety and tolerability were assessed throughout the study. A physiologically-based pharmacokinetic (PBPK) model was also built. There were 15 subjects enrolled; mean age was 31 years. The odanacatib AUC0-∞ GMR (90% CI) [odanacatibþprednisone (Day 14, Period 2)/odanacatib alone (Day 1, Period 1] was 1.06 (0.96, 1.17). AUC0-∞ GMR (90%CI) [midazolamþ prednisone (Day 28, Period 2)/midazolam alone (Day 1, Period 1] was 1.08 (0.93,1.26). There were no serious AEs or AEs leading to discontinuation. PBPK modeling showed that prednisone does not cause significant effects on the exposure of sensitive CYP3A4 substrates in vivo at therapeutic doses. Co-administration of prednisone 10 mg qd had no effect on pharmacokinetics of either odanacatib 10 mg or midazolam 2 mg. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00912700
Volume :
54
Issue :
11
Database :
Academic Search Index
Journal :
Journal of Clinical Pharmacology
Publication Type :
Academic Journal
Accession number :
103412375
Full Text :
https://doi.org/10.1002/jcph.338