Sivasubramanian, Rama, Chakraborty, Abhijit, Rouzade-Dominguez, Marie-Laure, Neelakantham, Srikanth Raju, Jakab, Annamaria, Mensinga, Tjeert, Legangneux, Eric, Woessner, Ralph and Ufer, Mike (2015) Effect of mavoglurant (AFQ056) on the pharmacokinetics of a combined oral contraceptive containing ethinyl estradiol and levonorgestrel in healthy women. International Journal of Clinical Pharmacology and Therapeutics .

Abstract

Objective: To compare the pharmacokinetics (PKs) of a combination oral contraceptive (OC) when given alone or concomitantly with the selective metabotropic glutamate receptor 5 antagonist mavoglurant (AFQ056).
Methods: This open-label, fixed-sequence, two-period study included 30 healthy female subjects aged 18–40 years. In Period 1, a single oral dose of an OC containing 30 μg ethinyl estradiol (EE)/150 μg levonorgestrel (LNG) was administered alone. In Period 2, OC was administered with a clinically relevant multiple-dose of 100 mg b.i.d. mavoglurant
under-steady conditions. Plasma concentrations of EE and LNG were measured up to 72 hours post administration and PK parameters Cmax and AUClast were estimated using noncompartmental methods.
Results: The geometric mean ratios of EE PK parameters Cmax and AUClast obtained with and without mavoglurant were 0.97 (90% confidence interval [CI]: 0.90-1.06) and 0.94
(90% CI: 0.86-1.03), respectively. The corresponding Cmax and AUClast for LNG were 0.81 (90% CI: 0.75-0.87) and 0.68 (90% CI: 0.63 0.73), respectively.
Conclusions: In conclusion, the EE PK was unchanged, whereas Cmax and AUClast of LNG was approximately 19% and 32% lower, respectively, when given with mavoglurant. Further investigation regarding the impact on contraceptive efficacy is warranted.

Item Type:	Article
Keywords:	drug-drug interaction, mavoglurant, mGluR5, oral contraceptive, pharmacokinetics
Date Deposited:	29 Apr 2016 23:45
Last Modified:	29 Apr 2016 23:45
URI:	https://oak.novartis.com/id/eprint/24193