A Study to Compare the Macitentan-tadalafil Fixed Dose Combination Tablet Relative to the Concomitant Administration of the Reference Tablets of Macitentan and Tadalafil in Healthy Subjects

NCT03215966 | Completed Phase 1

• 1 other identifier: AC-077-103
• Study Type: interventional
• Target: 38
• Locations: 1 country
• Sites: 1

Brief Summary

The primary objective of this study is to demonstrate that macitentan and tadalafil administered as a fixed combination is bioequivalent to both compounds given as separate tablets given at the same doses as in the fixed combination (i.e. whether the amounts of macitentan and tadalfil which reach the blood are comparable).

Conditions

Healthy Subjects

Keywords

bioequivalence

Outcome Measures

Primary Outcomes (3)

• Maximum plasma concentration (Cmax) of macitentan and tadalafil

  The measured individual plasma concentrations of macitentan and tadalafil are used to directly obtain Cmax

  Blood samples for pharmacokinetic evaluations are collected at selected time points from Baseline (pre-dose) to 216 hours post-dose of each study period

• Area under the plasma concentration-time curve from 0 to time t [AUC(0-t)] of macitentan and tadalafil

  AUC(0-t) is the area calculated from the concentration-time profile of macitentan and tadalafil, from time 0 to to time t of the last measured concentration above the limit of quantification

  Blood samples for pharmacokinetic evaluations are collected at selected time points from Baseline (pre-dose) to 216 hours post-dose of each study period

• Area under the plasma concentration-time curve to infinitiy [AUC(0-inf)] of macitentan and tadalafil

  AUC(0-inf) is the area calculated from the concentration-time profile of macitentan and tadalafil, from time 0 to extrapolated infinite time

  Blood samples for pharmacokinetic evaluations are collected at selected time points from Baseline (pre-dose) to 216 hours post-dose of each study period

Secondary Outcomes (3)

• maximal plasma concentration (Cmax) of ACT-132577

  Blood samples for pharmacokinetic evaluations are collected at selected time points from Baseline (pre-dose) to 216 hours post-dose of each study period

• Area under the plasma concentration-time curve from 0 to time t [AUC(0-t)] of ACT-132577

  Blood samples for pharmacokinetic evaluations are collected at selected time points from Baseline (pre-dose) to 216 hours post-dose of each study period

• Area under the plasma concentration-time curve to infinity [AUC(0-inf)] of ACT-132577

  Blood samples for pharmacokinetic evaluations are collected at selected time points from Baseline (pre-dose) to 216 hours post-dose of each study period

Study Arms (2)

Sequence A/B

EXPERIMENTAL

Subjects receive one tablet of macitentan / tadalafil FDC (fixed dose combination) during Period 1, then after a washout period of at least 7 days they receive one tablet of macitentan (Opsumit®) and two tablets of tadalafil (Adcirca®) during Period 2

Combination Product: Macitentan / tadalafil FDC; Drug: Macitentan (Opsumit®); Drug: Tadalafil (Adcirca®)

Sequence B/A

EXPERIMENTAL

Subjects receive one tablet of macitentan (Opsumit®) and two tablets of tadalafil (Adcirca®) during Period 1, then after a washout period of at least 7 days, they receive one tablet of macitentan / tadalafil FDC (fixed dose combination) during Period 2

Combination Product: Macitentan / tadalafil FDC; Drug: Macitentan (Opsumit®); Drug: Tadalafil (Adcirca®)

Interventions

Macitentan / tadalafil FDC COMBINATION_PRODUCT

Tablets for oral administration containing 10 mg of macitentan and 40 mg of tadalafil

Sequence A/B; Sequence B/A

Macitentan (Opsumit®) DRUG

Film-coated tablets for oral administration formulated at a strength of 10 mg

Also known as: ACT-064992

Sequence A/B; Sequence B/A

Tadalafil (Adcirca®) DRUG

Film-coated tablets for oral administration formulated at a strength of 20 mg

Sequence A/B; Sequence B/A

Eligibility Criteria

• Age: 18 Years - 55 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Signed informed consent
• Male and female subjects aged between 18 and 55 years (inclusive) at screening
• Healthy on the basis of the physical examination, vital signs, 12-lead ECG, and laboratory tests performed at screening
• Women must have a negative serum pregnancy test at screening and a negative urine pregnancy test on Day-1 or must be of non-childbearing potential.
• Body mass index (BMI) 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)

You may not qualify if:

• Known hypersensitivity to any active substance or drugs of the same class, or any excipients of the drug formulation(s)
• History or clinical evidence of any disease and/or existence of any surgical or medical condition, which might interfere with the absorption, distribution, metabolism or excretion of the study treatment(s)
• Values of hepatic aminotransferase (alanine aminotransferase \[ALT\] and/or aspartate aminotransferase \[AST\]) \> 3 X upper limit of normal at screening
• Loss of vision in one eye because of non-arteritic anterior ischemic optic neuropathy
• Known hereditary degenerative retinal disorders, including retinitis pigmentosa
• Priapism and anatomical deformation of the penis
• Previous history of fainting, collapse, syncope, orthostatic hypotension, or vasovagal reactions
• Treatment with another investigational drug within 3 months prior to screening or participation in more than 4 investigational drug studies within 1 year prior to screening
• Excessive caffeine consumption, defined as \> or = 800 mg per day at screening.
• Nicotine intake (e.g., smoking, nicotine patch, nicotine chewing gum, or electronic cigarettes) within 3 months prior to screening and inability to refrain from nicotine intake from screening until end-of-study (EOS; washout period included)
• Previous treatment with any prescribed medications (including vaccines) or over the counter (OTC) medications within 3 weeks prior to first study treatment administration.
• Any circumstances or conditions, which, in the opinion of the investigator, may affect full participation in the study or compliance with the protocol.

Sponsors & Collaborators

• Actelion: lead

Study Sites (1)

CRS Clinical Research Services Mannheim

Mannheim, 68167, Germany

Location

MeSH Terms

Interventions

macitentan; Tadalafil

Intervention Hierarchy (Ancestors)

Carbolines; Pyridines; Heterocyclic Compounds, 1-Ring; Heterocyclic Compounds; Indole Alkaloids; Indoles; Heterocyclic Compounds, 2-Ring; Heterocyclic Compounds, Fused-Ring; Heterocyclic Compounds, 3-Ring

Study Officials

• JP Jones

  Actelion

  STUDY DIRECTOR

Study Design

• Study Type: interventional
• Phase: phase 1
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: OTHER
• Intervention Model: CROSSOVER
• Sponsor Type: INDUSTRY
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: July 11, 2017
• First Posted: July 12, 2017
• Study Start: August 7, 2017
• Primary Completion: September 24, 2017
• Study Completion: September 24, 2017
• Last Updated: June 22, 2025

Record last verified: 2025-06

Locations

DE (1)