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A drug-drug interaction trial of OPC-61815 and rifampicin in healthy male subject

A single-center, open-label, add-on drug-drug interaction trial to investigate the effects of single oral administration of rifampicin on the pharmacokinetics of OPC-61815 as a single intravenous administration in healthy male subjects

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT2080224955
Enrollment
14
Registered
2019-11-20
Start date
2019-11-16
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Congestive heart failure

Interventions

investigational material(s) Generic name etc : Tolvaptan Sodium Phosphate INN of investigational material : - Therapeutic category code : 213 Diuretics Dosage and Administration for Investigational ma

Sponsors

Otsuka Pharmaceutical Co., LTD.
Lead Sponsor

Eligibility

Sex/Gender
Male

Inclusion criteria

Inclusion criteria: 1) Japanese male subjects age 20 to 45 years, inclusive 2) Body Mass Index (BMI): at least 18.5 kg/m2 and less than 25.0 kg/m2 3) Subjects determined to have a genotype SLCO1B1 521T/T as a result of genetic testing for OATP1B1

Exclusion criteria

Exclusion criteria: Subjects with a history of clinically significant abnormality, or for whom a clinically significant abnormality is observed in the results of the screening examination, for which the investigator, subinvestigator, or sponsor judges that the abnormality could place the subject at risk or affect evaluation of drug absorption, distribution, metabolism, or excretion. Such abnormalities include, but are not limited to, a history or current symptoms of cardiac, hepatic, renal, nervous, endocrine, gastrointestinal, respiratory, hematologic, and immune diseases/disorders.

Design outcomes

Primary

MeasureTime frame
pharmacokinetics Assessments for Pharmacokinetics

Secondary

MeasureTime frame
safety Assessments for Safety: adverse events (AEs), clinical laboratory tests, physical examination findings, vital signs (temperature, blood pressure, and pulse rate), body weight, and 12-lead electrocardiogram (ECG)

Countries

Japan

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026