CI

At a glance

ClinicalIndex Comparison Record
Phase 1Completed· 24 enrolled / 24 target
Drug / intervention
OPC-167832 +2 moredrug
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT07542847
NCT07542847Phase 1CompletedOn Track (0.5/mo)Completion was 43mo ago

A Phase 1, Single-center, Two-part, Open-label, Pharmacokinetic Trial to Assess the Potential for Cytochrome P450 3A Mediated Drug-drug Interactions With Orally Administered OPC-167832 Tablets in Healthy Adult Subjects

Otsuka Pharmaceutical Development & Commercialization, Inc.·interventional·Posted Apr 21, 2026·Updated Jun 5, 2026

In Brief

A Phase 1 clinical trial evaluating OPC-167832, Itraconazole, and 1 other intervention for Healthy Volunteers. Completed, enrolled 24 participants across 1 site.

Detailed Summary

The purpose of this trial is to assess the potential for cytochrome P450 (CYP)-mediated drug-drug interactions (DDIs) with OPC-167832. The study is conducted in 2 parts: Part 1 assesses the potential effect of the CYP3A inhibitor itraconazole on the metabolism of OPC-167832 and Part 2 assesses the potential effect of the CYP3A inducer carbamazepine on the metabolism of OPC-167832 in healthy adult participants.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesUnited States
Collaborators--

Timeline

Phase 1CompletedFinished
2023202420252026
First PostedApr 21, 2026
Enrollment StartSep 19, 2022
Primary CompletionNov 18, 2022
Study CompletionDec 11, 2022
TodayJul 2, 2026
Enrollment to primary: 2 monthsPosted 2 months ago

Arms & Interventions

Part 1: OPC-167832 and Itraconazoleexperimental

Participants receive single OPC-167832 dose, orally on Days 1 and 15, and itraconazole, orally, twice daily (BID), on Day 8 followed by itraconazole, once daily (QD) from Day 9 to Day 25 of Part 1.

Drug: OPC-167832Drug: Itraconazole
Part 2: OPC-167832 and Carbamazepineexperimental

Participants receive single OPC-167832 dose, orally on Days 1 and 25, and carbamazepine Dose 1, orally, BID from Day 8 to Day 10, followed by Dose 2, BID from Day 11 to Day 13, and Dose 3, BID from Day 14 to Day 31 of Part 2.

Drug: OPC-167832Drug: Carbamazepine

Interventions

OPC-167832drug

Oral tablets.

Itraconazoledrug

Oral solution.

Carbamazepinedrug

Oral tablets.