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  • Title: Pharmacokinetics of RP5063 Following Single Doses to Normal Healthy Volunteers and Multiple Doses Over 10 Days to Stable Schizophrenic Patients.
    Author: Cantillon M, Ings R, Bhat L.
    Journal: Clin Transl Sci; 2018 Jul; 11(4):378-386. PubMed ID: 29119704.
    Abstract:
    RP5063, a multimodal dopamine (D)-serotonin (5-HT) stabilizer, possesses high affinity for D2/3/4 and 5-HT1A/2A/2B/2C/6/7 receptors and moderate affinity for the serotonin transporter. Two phase I studies characterized the pharmacokinetics of a single dose (10 and 15 mg fasting, 15 mg fed/fasting) in healthy volunteers and multiple doses (10, 20, 50, and 100 mg fed) over 10 days in patients with stable schizophrenia. RP5063 displayed a dose-dependent Cmax at 4 to 6 h, linear dose proportionality for both Cmax and AUC, and a half-life between 40 and 71 h. In the single-dose study, food slightly increased the extent of drug absorption. In the multiple-dose study, steady-state was approached after 120 h of daily dosing. Pooled data in the single-dose study indicate that the pharmacokinetic profile appears to be comparable between Japanese and Caucasians. RP5063 appears to have a straightforward pharmacokinetic profile that supports for phase II and III evaluation as a once-daily oral administered agent.
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