Comparison of Pharmacokinetics of Aprepitant in Healthy Chinese and Caucasian Subjects.

Drug Des Devel Ther

Department of Clinical Pharmacology, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China.

Published: February 2021

AI Article Synopsis

  • Aprepitant (EMEND) is a drug used to prevent nausea and vomiting from chemotherapy, and a study assessed its safety and pharmacokinetics (how the drug moves in the body) in healthy Chinese and Caucasian individuals.
  • The study involved 24 subjects (12 from each ethnicity) who received a single dose of aprepitant, and after a washout period, only Chinese subjects took it again for three days, with blood samples collected for analysis.
  • Results showed no serious side effects in either group, with similar drug absorption and concentration levels between the ethnicities, confirming that aprepitant is safe and well-tolerated for both groups.

Article Abstract

Purpose: Aprepitant is used to prevent nausea and vomiting associated with moderately and highly emetogenic chemotherapy. In this open-label, 2-period study, the safety, tolerability, and pharmacokinetics (PK) of aprepitant (EMEND) were evaluated in healthy Chinese and Caucasian subjects.

Patients And Methods: Twelve Chinese and 12 Caucasian subjects were to receive a 125 mg single-dose of aprepitant during period 1; subsequently, after 15 days washout, only Chinese subjects were to receive the 3-day regimen in period 2. In each period, serial blood samples were collected and analyzed by a validated liquid chromatographic and mass spectrometric method to characterize aprepitant PK across both groups.

Results: In both Chinese and Caucasian subjects, there were no serious adverse events. AUC, C, T and t were largely comparable between the two ethnicities. Comparing the result of period 1 in Chinese and Caucasian subjects, the geometric least-squares mean maximum plasma concentrations (C) were 1482 ng/mL and 1435 ng/mL, and the area under the concentration-time curve (AUC) 34,035 hr·ng/mL and 34,188 hr·ng/mL. In period 2, the geometric mean AUC on Day 1 and Day 3 were 19,446 hr·ng/mL and 27,843 hr·ng/mL, and the geometric mean C on Day 1 and Day 3 were 1423 ng/mL and 1757 ng/mL, respectively.

Conclusion: Aprepitant is generally safe and well tolerated in healthy Chinese and Caucasian subjects. Aprepitant PK is comparable between Chinese and Caucasian subjects following single-dose administration. The PK following a clinical 3-day regimen on healthy Chinese subjects has been characterized.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7102878PMC
http://dx.doi.org/10.2147/DDDT.S243924DOI Listing

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