Dataset Information

Evaluating the Safety, Tolerability, and Disposition of Trazpiroben, a D₂ /D₃ Receptor Antagonist: Phase I Single- and Multiple-Ascending Dose Studies in Healthy Japanese Participants.

ABSTRACT: Trazpiroben (TAK-906) is a peripherally selective dopamine D₂ /D₃ receptor antagonist being developed to treat chronic gastroparesis. This phase I, randomized, double-blind, placebo-controlled, single- and multiple-ascending dose, parallel-group study evaluated the safety, tolerability, pharmacokinetics, and pharmacodynamics of trazpiroben in healthy Japanese men. Findings were compared with those from a prior US trial in healthy individuals. Overall, 24 participants were enrolled into 3 cohorts (each n = 8). Per cohort, 6 participants received trazpiroben (cohort 1, 50 mg; 2, 100 mg; 3, 10 mg) once on day 1 and twice daily on days 3 through 7, and two received placebo. Trazpiroben was well tolerated, with no clinically meaningful adverse events observed. Following single- and multiple-dose administration, trazpiroben was rapidly absorbed and eliminated (mean elimination half-life, 1.89-6.45 hours; median time to maximum serum concentration [steady state], 1.00-1.25 hours). Serum prolactin increased with trazpiroben treatment (mean maximum serum concentration 93.32 ng/mL [10 mg] vs. 10.83 ng/mL [placebo]), illustrating receptor target engagement. Results reflected those from healthy US participants, indicating a lack of differences between these ethnic populations in trazpiroben disposition and safety profile. Trazpiroben may represent a promising therapy for chronic gastroparesis across different populations, with further evaluation ongoing in a phase IIb study (NCT03544229).

SUBMITTER: Yamaguchi T

PROVIDER: S-EPMC9303893 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Evaluating the Safety, Tolerability, and Disposition of Trazpiroben, a D2 /D3 Receptor Antagonist: Phase I Single- and Multiple-Ascending Dose Studies in Healthy Japanese Participants.

Yamaguchi Takayoshi T Kudou Kentarou K Okamoto Hiroyuki H Chen Chunlin C Whiting Roger R Sekino Hisakuni H

Clinical pharmacology in drug development 20211229 6

Trazpiroben (TAK-906) is a peripherally selective dopamine D2 /D3 receptor antagonist being developed to treat chronic gastroparesis. This phase I, randomized, double-blind, placebo-controlled, single- and multiple-ascending dose, parallel-group study evaluated the safety, tolerability, pharmacokinetics, and pharmacodynamics of trazpiroben in healthy Japanese men. Findings were compared with those from a prior US trial in healthy individuals. Overall, 24 participants were e ...[more]

PMID: 34967147

Similar Datasets

Project description:BackgroundGastroparesis is characterized by delayed gastric emptying in the absence of mechanical obstruction. Owing to the potential for serious side effects, current treatments have restrictions on their use and there is a need for novel compounds with favorable safety profiles. Trazpiroben (previously TAK-906) is a peripherally selective dopamine D2/D3 receptor antagonist being developed to treat chronic gastroparesis. Effects of trazpiroben on the central nervous system and pulmonary system in rats and on the cardiovascular system in dogs were assessed.MethodsFunctional observational battery and locomotion assessments were conducted in groups of eight female rats receiving 0 (control), 100, 300, or 1000 mg/kg/day oral trazpiroben for 2 days. Assessments were performed at baseline (pre-dosing) and 0.5 hours post-dose on day 2 of dosing. Pulmonary safety: following administration of the same trazpiroben doses, groups of eight male rats underwent heads-out plethysmography at baseline, through 6 hours post-dose, and approximately 24 hours post-dose on day 1. Four telemetry-instrumented male beagle dogs received 0 (control), 1, 10, or 30 mg/kg of oral trazpiroben in a Latin square crossover design on days 1, 4, 8, and 11. Relevant parameters were continuously measured for approximately 18 hours post-dose.ResultsNo clinically meaningful effects on central nervous system, pulmonary, or cardiovascular assessments were observed at any trazpiroben dose. Significantly decreased locomotion occurred with increasing dose, including reduced horizontal/vertical ambulation at ≥ 300 mg/kg/day. Small transient decreases in systolic and pulse pressure at ≥10 mg/kg/day were observed, with compensatory increases in heart rate at 30 mg/kg/day. No trazpiroben-related effects on cardiovascular parameters (including QT interval corrected for heart rate) or body temperature were noted. No trazpiroben-related qualitative electrocardiogram abnormalities were observed.DiscussionOur results suggest that trazpiroben has limited central nervous system effects and a favorable cardiac safety profile.

Dataset Information

Evaluating the Safety, Tolerability, and Disposition of Trazpiroben, a D₂ /D₃ Receptor Antagonist: Phase I Single- and Multiple-Ascending Dose Studies in Healthy Japanese Participants.

Publications

Evaluating the Safety, Tolerability, and Disposition of Trazpiroben, a D<sub>2</sub> /D<sub>3</sub> Receptor Antagonist: Phase I Single- and Multiple-Ascending Dose Studies in Healthy Japanese Participants.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets