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A Study to Investigate the Effect of Rifampicin on the Uptake and Breakdown of ACT-246475 in Healthy Subjects

A Single-center, Randomized, Double-blind, Two-period Cross-over Study to Investigate the Effect of a Single Intravenous Dose of Rifampicin on the Pharmacokinetics of ACT-246475 in Healthy Subjects

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03814200
Enrollment
14
Registered
2019-01-23
Start date
2019-01-03
Completion date
2019-02-19
Last updated
2025-07-03

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

Conditions

Healthy Subject

Brief summary

The study will investigate the effect of rifampicin on the uptake and breakdown of ACT-246475 in healthy subjects

Interventions

DRUGSaline

Single i.v. infusion of 100 mL saline 0.9% for 30 min

Single s.c. dose of 4 mg ACT-246475 in the thigh under fasting conditions

DRUGRifampicin

Single i.v. infusion of 600 mg rifampicin (100 mL) for 30 min

Sponsors

Viatris Innovation GmbH
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
OTHER
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
Yes

Inclusion criteria

* Signed informed consent in a language understandable to the subject prior to any study-mandated procedure * Healthy male and female subjects aged between 18 and 65 years (inclusive) at Screening * Body mass index of 18.0 to 30.0 kg/m2 (inclusive) at Screening * Systolic blood pressure 100-145 mmHg, diastolic blood pressure 50-90 mmHg, and pulse rate 45-90 bpm (inclusive), measured on the same arm, after 5 min in the supine position at screening and on Day -1 of the first period * Hematology and coagulation test results not deviating from the normal range to a clinically relevant extent at Screening and on Day -1 of the first period * Women of childbearing potential must have a negative serum pregnancy test at Screening and a negative urine pregnancy test on Day- 1 of the first treatment period and must agree to consistently and correctly use a highly effective method of contraception

Exclusion criteria

* Previous exposure to ACT-246475. * Previous exposure to rifampicin within 3 months prior to Screening. * Known hypersensitivity to P2Y12 receptor antagonists or rifampicin, or to any of the rifamycins, or any of their excipients * Loss of 250 mL or more of blood within 3 months prior to Screening * Any circumstances or conditions, which, in the opinion of the investigator, may affect full participation in the study or compliance with the protocol * Family or personal history of prolonged bleeding (e.g., after surgical intervention) or bleeding disorders (e.g., thrombocytopenia, clotting disturbances), intracranial vascular diseases, stroke, reasonable suspicion of vascular malformations, or peptic ulcers * Known platelet disorders (e.g., Glanzmann thromboasthenia, von Willebrand disease, platelet release defect)

Design outcomes

Primary

MeasureTime frameDescription
Area under the plasma concentration-time curve (AUC) from time zero to time t of the last measured concentration above the limit of quantification (AUC0-t)Up to 36 hours after treatment administrationThe plasma PK parameters of ACT-246475 will be derived by non-compartmental analysis of the plasma concentration-time profiles
AUC from zero to infinity (AUC0-inf)Up to 36 hours after treatment administrationThe plasma PK parameters of ACT-246475 will be derived by non-compartmental analysis of the plasma concentration-time profiles
The maximum plasma concentration (Cmax)Up to 36 hours after treatment administrationThe plasma PK parameters of ACT-246475 will be derived by non-compartmental analysis of the plasma concentration-time profiles
The time to reach Cmax (tmax)Up to 36 hours after treatment administrationThe plasma PK parameters of ACT-246475 will be derived by non-compartmental analysis of the plasma concentration-time profiles
Terminal half-life (t½)Up to 36 hours after treatment administrationThe plasma PK parameters of ACT-246475 will be derived by non-compartmental analysis of the plasma concentration-time profiles

Countries

Netherlands

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026