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- W2807609672 abstract "Abstract Purpose/Background The antipsychotic agent lurasidone (Latuda®) is metabolized by Cytochrome P450-3A (CYP3A) enzymes. Coadministration with strong CYP3A inhibitors (such as ketoconazole, posaconazole, and ritonavir) is contraindicated due to the risk of sedation and movement disorders from high levels of lurasidone. This study evaluated the time-course of recovery from the posaconazole drug interaction, and the effect of obesity on the recovery process. Methods/Procedures Healthy normal-weight volunteers (n = 11, mean body mass index, BMI, = 23.1 kg/m 2 ) and otherwise healthy obese subjects (n = 13, mean BMI = 49.3 kg/m 2 ) received single doses of lurasidone in the baseline control condition, again during coadministration of posaconazole, and at 4 additional time points during the 2 weeks after posaconazole discontinuation. Findings/Results With posaconazole coadministration, lurasidone area under the concentration curve (AUC) increased by an arithmetic mean factor of 6.2 in normals, and by 4.9 in obese subjects. Post-treatment washout of posaconazole was slow in normals (mean half-life 31 hours), and further prolonged in obese subjects (53 hours). Recovery of lurasidone AUC toward baseline was correspondingly slow, and was incomplete. AUC remained significantly elevated above baseline both in normals (factor of 2.1) and obese subjects (factor of 3.4) even at 2 weeks after stopping posaconazole. Implications/Conclusions Product labeling does not address the necessary delay after discontinuation of a strong CYP3A inhibitor before lurasidone can be safely administered. We recommend requiring normal-weight and obese patients to limit the dosage of lurasidone, or undergo a washout period, for two and three weeks, respectively, after discontinuation of posaconazole." @default.
- W2807609672 created "2018-06-13" @default.
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- W2807609672 date "2018-08-01" @default.
- W2807609672 modified "2023-09-29" @default.
- W2807609672 title "Sustained Impairment of Lurasidone Clearance After Discontinuation of Posaconazole" @default.
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- W2807609672 doi "https://doi.org/10.1097/jcp.0000000000000892" @default.
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