E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
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E.1.1.1 | Medical condition in easily understood language |
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E.1.1.2 | Therapeutic area | Analytical, Diagnostic and Therapeutic Techniques and Equipment [E] - Surgical Procedures, Operative [E04] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.0 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10045545 |
E.1.2 | Term | Univentricular heart |
E.1.2 | System Organ Class | 10010331 - Congenital, familial and genetic disorders |
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E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 21.1 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10065950 |
E.1.2 | Term | Cavopulmonary anastomosis |
E.1.2 | System Organ Class | 10042613 - Surgical and medical procedures |
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E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
To assess the effect of macitentan on exercise capacity (measured by peak oxygen uptake [VO2]) in comparison with placebo in Fontan-palliated subjects. |
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E.2.2 | Secondary objectives of the trial |
To assess the effect of macitentan on long-term exercise capacity (measured by peak VO2 over 52 weeks). To assess the effect of macitentan on daily Physical Activity measured by Accelometer (PA-Ac). To evaluate the safety and tolerability of macitentan. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
- Written informed consent/assent from the subject and/or a legal representative prior to initiation of any study-mandated procedures - Fontan-palliated subjects with either intra-atrial lateral tunnel total cavopulmonary connection (LT-TCPC), or extra cardiac tunnel TCPC (EC-TCPC) surgery > 1 year before Screening. Either LT- or EC-TCPC can be primary or secondary to atrio-pulmonary connection - New York Heart Association (NYHA) functional class (FC) II or III (assessed by the investigator using the Specific Activity Scale - Age range: >= 12 years old - Women of childbearing potential must have a negative serum pregnancy test at the Randomization visit, perform monthly pregnancy tests, and use reliable contraception |
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E.4 | Principal exclusion criteria |
- Pattern of Fontan circulation severity - Deterioration of the Fontan-palliated condition - Systolic BP < 90 mmHg (< 85 mmHg for < 18 years old and < 150 cm of height) at rest or during Cardiopulmonary exercise testing at screening or baseline - Criteria related to macitentan use - Limitations to Cardiopulmonary exercise testing (CPET) - Peak VO2 < 15 mL/kg/min. - Any known factor or disease that may interfere with treatment compliance or full participation in the study |
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E.5 End points |
E.5.1 | Primary end point(s) |
- Change in peak VO2 (oxygen uptake) |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
At Baseline (Randomization/Visit 2) and Week 16 (Visit 4) |
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E.5.2 | Secondary end point(s) |
Efficacy - Change in peak VO2 - Change in mean count per minute of daily PA-Ac
Safety - Treatment-emergent AEs and SAEs - AEs leading to premature discontinuation of study treatment
Pharmacokinetics (PK) - Trough (pre dose) plasma concentrations |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
Efficacy - from Baseline (Visit 2) over 52 weeks - from Baseline (Visit 2) to Week 16 (Visit 4)
Safety - up to 30 days after study treatment discontinuation.
PK - at Week 4 (Visit 3) and Week 16 (Visit 4), or at EOT in the case of premature study drug discontinuation. |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | No |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Yes |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | Yes |
E.6.13 | Others | Yes |
E.6.13.1 | Other scope of the trial description |
Quality of life assessment |
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E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
E.8.1.5 | Parallel group | Yes |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | Yes |
E.8.1.7.1 | Other trial design description |
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E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | Yes |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 2 |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 4 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 11 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
Australia |
China |
New Zealand |
Taiwan |
United States |
Denmark |
France |
Germany |
Poland |
United Kingdom |
Czechia |
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E.8.7 | Trial has a data monitoring committee | Yes |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 2 |
E.8.9.1 | In the Member State concerned months | 10 |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial years | 2 |
E.8.9.2 | In all countries concerned by the trial months | 10 |