Clinical trial NCT02206204: Study of Selexipag and Its Metabolite ACT-333679 on Cardiac Repolarization in Healthy Male and Female Subjects
Official title: Single-center, Double-blind, Randomized, Placebo- and Positive-controlled, Parallel-group With Nested Cross-over, Multiple-dose, Up-titration Study of the Effects of Selexipag and Its Metabolite ACT-333679 on Cardiac Repolarization in Healthy Male and Female Subjects
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE1
Conditions: Cardiodynamics
Safety
Tolerability
Pharmacokinetics
Keywords: Selexipag
ACT-333679
Lead sponsor: Actelion
Sponsor class: INDUSTRY
First posted: 2014-08-01
Enrollment: 159
Sex: ALL
Minimum age (years): 18
Maximum age (years): 45
Standard ages: ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL

Brief summary: This is a single-center, double-blind, randomized, placebo- and positive-controlled, double-dummy, parallel-group, multiple-dose, up-titration study with a nested cross-over comparison between moxifloxacin and placebo in healthy male and female subjects. The primary objective is to demonstrate that selexipag and its metabolite ACT-333679 do not have an effect on cardiac repolarization exceeding the threshold of regulatory concern, at two orally administered dose levels (800 and 1600 μg twice daily) in healthy male and female subjects. Moxifloxacin is included as a positive control.


Eligibility criteria: Inclusion Criteria:

* Signed, dated written informed consent prior to any study procedure.
* Ability to communicate well with the investigator in local language, and to understand and comply with the requirements of the study.
* Women of childbearing potential must have had a negative serum pregnancy test at screening and a negative serum pregnancy test on Day -1. Women of childbearing potential must have consistently and correctly used a reliable method of contraception with a failure rate of \< 1% per year, been sexually inactive, or have vasectomized partner.
* Healthy based on medical history and assessments performed at screening and on Day -1.
* Body mass index ≥ 18.5 and ≤ 32 kg/m\^2 at screening. Body weight at least 50 kg.
* Negative results from urine drug screen at screening and on Day -1 and negative urine alcohol test on Day -1.
* Willing to refrain from alcohol consumption from at least 48 hours prior to clinic admission to the end of study.
* Systolic blood pressure 90-145 mmHg, diastolic blood pressure 50-90 mmHg, and pulse rate 45-90 beats per minute, at screening and Day -1.
* Hematology, blood chemistry, and urinalysis results not deviating from the normal range to a clinically relevant extent at screening and Day -1.

Exclusion Criteria:

* Known hypersensitivity to selexipag, moxifloxacin, or excipients of the drug formulations used in this study.
* Treatment with selexipag or an investigational drug prior to screening within 30 days or 6 half-lives, whichever was longer.
* History or clinical evidence of any disease and/or the existence of any surgical or medical condition, which might interfere with the absorption, distribution, metabolism, or excretion of selexipag and moxifloxacin.
* Caffeine consumption of equal to or greater than 800 mg per day at screening.
* History of fainting, collapse, syncope, blackouts, orthostatic hypotension, or vasovagal reactions.
* Chronic or relevant acute infections.
* History of relevant allergy / hypersensitivity.
* History of clinical evidence of psychiatric disease, alcoholism, or drug abuse within the 3-year period prior to screening.
* Smoking within the 3 months prior to screening and inability to refrain from smoking during the study.
* Loss of 500 mL or more of blood within 56 days prior to screening.
* Positive results from the hepatitis serology, except for vaccinated subjects at screening.
* Positive results from human immunodeficiency virus serology at screening.
* Previous treatment with any prescribed or over-the-counter medications, with the exception of contraceptives and hormone replacement therapy, within the 2 weeks prior to first study drug administration or 5 half-lives, whichever longer.
* Excessive physical activities within 1 week prior to administration of study drug.
* Any cardiac condition (including ECG abnormalities) or illness with a potential to increase the cardiac risk of the subject or that may affect QTc analysis.
* QTc \> 450 ms or \> 470 ms for male or female subjects, respectively, at screening and Day -1.
* Clinically relevant abnormalities on ECG, at screening and Day -1.
* Personal or family history of long QT syndrome or hypokalemia.
* Legal incapacity or limited legal capacity.
* Veins unsuitable for intravenous puncture on either arm.
* Any circumstances or conditions, which, in the opinion of the investigator, may affected the subject's participation in the study or compliance with the protocol.
* Pregnant or nursing women.
* Women who plan to become pregnant within 1 month of the end of study.

Primary outcomes:
measure: Baseline adjusted placebo corrected change in corrected QTc interval (time interval from beginning of the Q wave until end of the T wave) (ΔΔQTcI) at various time points
timeFrame: 24 days
Secondary outcomes:
measure: Baseline adjusted placebo corrected change in heart rate at various time points
timeFrame: 24 days
measure: Baseline adjusted placebo corrected change in RR interval (interval from the peak of one QRS complex to the peak of the next) at various time points
timeFrame: 24 days
measure: Baseline adjusted placebo corrected change in PR interval (time interval from the beginning of the P wave to the beginning of the QRS complex) at various time points
timeFrame: 24 days
measure: Baseline adjusted placebo corrected change in QRS interval (time interval from the beginning of the Q wave to the end of the S wave) at various time points
timeFrame: 24 days
measure: Number of time points at which T-wave morphology changes were observed
timeFrame: 24 days
measure: Maximum plasma concentration (Cmax) for selexipag
timeFrame: 24 days
measure: Time to reach maximum plasma concentration (tmax) for selexipag
timeFrame: 24 days
measure: Area under the plasma concentration-time curve (AUCt) for selexipag
timeFrame: 24 days
measure: Trough plasma concentration (Ctrough) for selexipag
timeFrame: 24 days
measure: Maximum plasma concentration (Cmax) for ACT-333679
timeFrame: 24 days
measure: Time to reach maximum plasma concentration (tmax) for ACT-333679
timeFrame: 24 days
measure: Area under the plasma concentration-time curve (AUCt) for ACT-333679
timeFrame: 24 days
measure: Trough plasma concentration (Ctrough) for ACT-333679
timeFrame: 24 days
measure: Change in systolic blood pressure from baseline up to end of study
timeFrame: up to 29 days
measure: Change in diastolic blood pressure from baseline up to end of study
timeFrame: up to 29 days
measure: Change in pulse rate from baseline up to end of study
timeFrame: up to 29 days
measure: Change in body weight from baseline up to end of study
timeFrame: up to 29 days
measure: Number of participants with treatment-related electrocardiogram abnormalities up to the end of study
timeFrame: up to 29 days
Other outcomes:
Locations:
city: Evansville
country: United States
facility: Covance Clinical Research Unit
state: Indiana
Study officials:
affiliation: Actelion
name: Matthias Hoch, PhD
role: STUDY_DIRECTOR
References: