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. 2019 Apr 25;63(5):e02016-18.
doi: 10.1128/AAC.02016-18. Print 2019 May.

Doravirine and the Potential for CYP3A-Mediated Drug-Drug Interactions

Sauzanne G Khalilieh  1 , Ka Lai Yee  2 , Rosa I Sanchez  2 , Li Fan  2 , Matt S Anderson  2 , Monali Sura  2 , Tine Laethem  2 , Scott Rasmussen  3 , Luc van Bortel  4 , Griet van Lancker  4 , Marian Iwamoto  2
Affiliations

Doravirine and the Potential for CYP3A-Mediated Drug-Drug Interactions

Sauzanne G Khalilieh et al. Antimicrob Agents Chemother. .

Abstract

Identifying and understanding potential drug-drug interactions (DDIs) are vital for the treatment of human immunodeficiency virus type 1 (HIV-1) infection. This article discusses DDIs between doravirine, a nonnucleoside reverse transcriptase inhibitor (NNRTI), and cytochrome P450 3A (CYP3A) substrates and drugs that modulate CYP3A activity. Consistent with previously published in vitro data and DDI trials with the CYP3A substrates midazolam and atorvastatin, doravirine did not have any meaningful impact on the pharmacokinetics of the CYP3A substrates ethinyl estradiol and levonorgestrel. Coadministration of doravirine with CYP3A inhibitors (ritonavir or ketoconazole) increased doravirine exposure approximately 3-fold. However, these increases were not considered clinically meaningful. Conversely, previously published trials showed that coadministered CYP3A inducers (rifampin and rifabutin) decreased doravirine exposure by 88% and 50%, respectively (K. L. Yee, S. G. Khalilieh, R. I. Sanchez, R. Liu, et al., Clin Drug Investig 37:659-667, 2017 [https://doi.org/10.1007/s40261-017-0513-4]; S. G. Khalilieh, K. L. Yee, R. I. Sanchez, R. Liu, et al., J Clin Pharmacol 58:1044-1052, 2018 [https://doi.org/10.1002/jcph.1103]), while doravirine exposure following prior efavirenz administration led to an initial reduction in doravirine exposure of 62%, but the reduction became less pronounced with time (K. L. Yee, R. I. Sanchez, P. Auger, R. Liu, et al., Antimicrob Agents Chemother 61:e01757-16, 2017 [https://doi.org/10.1128/AAC.01757-16]). Overall, the coadministration of doravirine with CYP3A inhibitors and substrates is, therefore, supported by these data together with efficacy and safety data from clinical trials, while coadministration with strong CYP3A inducers, such as rifampin, cannot be recommended. Concomitant dosing with rifabutin (a CYP3A inducer less potent than rifampin) is acceptable if doravirine dosing is adjusted from once to twice daily; however, the effect of other moderate inducers on doravirine pharmacokinetics is unknown.

Keywords: HIV; doravirine; drug-drug interactions; nonnucleoside reverse transcriptase inhibitor (NNRTI).

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Figures

FIG 1
FIG 1
Elimination pathways of doravirine in humans.
See this image and copyright information in PMC

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