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An Upcoming Clinical Study to Measure the Safety and Impact of a Drug Called Macitentan in Teenage and Adult Fontan Patients.

Phase 3
Terminated
Conditions
Congenital Heart Disease With Fontan Circulation
Interventions
Registration Number
NCT03775421
Lead Sponsor
Actelion
Brief Summary

The aim of this open-label (OL) trial is to study the long-term use of macitentan for up to 2 years in Fontan-palliated adult and adolescent patients beyond the 52 weeks of treatment in the parent RUBATO double-blind (DB) study (AC-055H301, NCT03153137). This OL trial studies the long-term effect of macitentan in Fontan-palliated patients as it is not known if the effect of macitentan is sustained beyond 52 weeks (end of the parent RUBATO DB study). In addition, the trial also studies the long-term safety of macitentan as this is also unknown. Furthermore, the opportunity will be given to patients who were on placebo in the parent RUBATO DB study to receive macitentan 10 mg and benefit from a potentially active treatment.

Detailed Description

Not available

Recruitment & Eligibility

Status
TERMINATED
Sex
All
Target Recruitment
112
Inclusion Criteria
  • Written informed consent/assent from the subject and/or a legal representative prior to initiation of any study-mandated procedures.

  • Subjects who have completed Week 52 of the parent AC-055H301/RUBATO DB study (NCT03153137)

  • Women of childbearing potential must:

    1. have a negative serum pregnancy test prior to first intake of OL study drug, and,
    2. agree to perform monthly pregnancy tests up to the end of the safety follow up (S-FU) period, and,
    3. use reliable methods of contraception from enrollment up to at least 30 days after study treatment discontinuation.
Exclusion Criteria
  • Clinical worsening leading to medical interventions including reoperation of Fontan circulation (Fontan take-down) during the enrollment period
  • Systolic blood pressure < 90 mmHg (< 85 mmHg for subjects < 18 years old and < 150 cm of height) at rest
  • Criteria related to macitentan use
  • Any known factor or disease that may interfere with treatment compliance or full participation in the study

Study & Design

Study Type
INTERVENTIONAL
Study Design
SINGLE_GROUP
Arm && Interventions
GroupInterventionDescription
Open-label treatment periodmacitentan 10 mgoral administration of 10 mg macitentan once daily
Primary Outcome Measures
NameTimeMethod
Number of Participants With TEAEs Leading to Premature Discontinuation of Study TreatmentUp to 133 weeks

An adverse event is any untoward medical event that occurs in a participant administered an investigational product, and it does not necessarily indicate only events with clear causal relationship with the relevant investigational product. Any AE occurring at or after the study treatment start up to 30 days after EOT (limits included) within the analysis set was considered to be treatment-emergent.

Change From Baseline in Hemoglobin Over TimeBaseline up to Week 130

Change from baseline in hemoglobin over time was reported in this outcome measure.

Change From Baseline in Prothrombin Time Over TimeBaseline up to Week 130

Change from baseline in prothrombin time over time was reported in this outcome measure.

Number of Participants With Treatment-emergent Adverse Events (TEAEs)Up to 133 weeks

An adverse event is any untoward medical event that occurs in a participant administered an investigational product, and it does not necessarily indicate only events with clear causal relationship with the relevant investigational product. Any AE occurring at or after the study treatment start up to 30 days after end of treatment (EOT) (limits included) within the analysis set was considered to be treatment-emergent.

Number of Participants With Treatment-emergent Serious AEs (TESAEs)Up to 133 weeks

An adverse event is any untoward medical event that occurs in a participant administered an investigational product, and it does not necessarily indicate only events with clear causal relationship with the relevant investigational product. SAE is any AE that results in: death, persistent or significant disability/incapacity, requires inpatient hospitalization or prolongation of existing hospitalization, is life-threatening experience, is a congenital anomaly/birth defect and may jeopardize participant and/or may require medical or surgical intervention to prevent one of the outcomes listed above. Any SAE occurring at or after the study treatment start up to 30 days after EOT (limits included) within the analysis set was considered to be TESAEs.

Number of Participants With TEAEs Leading to DeathUp to 133 weeks

An adverse event is any untoward medical event that occurs in a participant administered an investigational product, and it does not necessarily indicate only events with clear causal relationship with the relevant investigational product. Any AE occurring at or after the study treatment start up to 30 days after EOT (limits included) within the analysis set was considered to be treatment-emergent.

Number of Participants With Treatment-emergent Marked Laboratory Abnormalities up to 30 Days After Study Treatment DiscontinuationUp to 133 weeks

Number of participants with treatment-emergent marked laboratory abnormalities (Hemoglobin \[gram/Liter {g/L}\], Platelets \[giga/L {10\^9 cells/L}\], Leukocytes \[10\^9 cells/L\], Lymphocytes \[10\^9 cells/L\], Neutrophils \[10\^9 cells/L\], Prothrombin International Normalized Ratio \[PINR;Ratio\], Aspartate Aminotransferase \[Units/L {U/L}\], Bilirubin \[micromoles/L {mcmol/L}\], Alkaline Phosphatase \[U/L\], Glomerular Filtration Rate \[milliliter/minute/1.73 meter square\], Glucose \[millimoles/L {mmol/L}\], Potassium \[mmol/L\], Sodium \[mmol/L\], Triglycerides \[mmol/L\] were reported. Abnormalities that occurred after study treatment start and up to 30 days after study treatment discontinuation, that were not present at baseline, were treatment-emergent. Marked laboratory abnormalities reported for at least 1 participant were reported in this outcome measure. \>=:greater than or equal to; \>:greater than; \<:less than; ULN: upper limit of normal; L:Low, H:High, LLL:lower/worse than LL, HHH:higher/worse than HH.

Change From Baseline in Systolic and Diastolic Arterial Blood Pressure (BP) Over TimeBaseline up to Week 130

Change from baseline in systolic and diastolic arterial BP over time was reported in this outcome measure.

Change From Baseline in Alanine Aminotransferase (ALT), Aspartate Aminotransferase (AST), Alkaline Phosphatase (AP), and Gamma Glutamyl Transferase (GGT) Over TimeBaseline up to Week 130

Change from baseline in ALT, AST, AP, and GGT over time were reported in this outcome measure.

Change From Baseline in Glomerular Filtration Rate (GFR) Over TimeBaseline up to Week 130

Change from baseline in GFR over time was reported in this outcome measure.

Change From Baseline in Hematocrit Over TimeBaseline up to Week 130

Change from baseline in hematocrit over time was reported in this outcome measure.

Change From Baseline in Leukocytes, Neutrophils, Lymphocytes, and Platelets Over TimeBaseline up to Week 130

Change from baseline in leukocytes, neutrophils, lymphocytes, and platelets over time were reported in this outcome measure.

Change From Baseline in Pulse Rate Over TimeBaseline up to Week 130

Change from baseline in pulse rate over time was reported in this outcome measure.

Change From Baseline in Peripheral Oxygen Saturation (SpO2) Over TimeBaseline up to Week 130

Change from baseline in SpO2 over time was reported in this outcome measure.

Change From Baseline in Body Weight Over TimeBaseline up to Week 130

Change from baseline in body weight over time was reported in this outcome measure.

Change From Baseline in Bilirubin, Direct Bilirubin, and Creatinine Over TimeBaseline up to Week 130

Change from baseline in bilirubin, direct bilirubin, and creatinine over time were reported in this outcome measure.

Change From Baseline in Prothrombin International Normalized Ratio Over TimeBaseline up to Week 130

Change from baseline in prothrombin international normalized ratio over time was reported in this outcome measure.

Secondary Outcome Measures
NameTimeMethod
Change From Baseline in Peak Oxygen Uptake/Consumption (VO2)Baseline, Week 52, and Week 104

Change from baseline in peak VO2 was reported in this outcome measure.

Change From Baseline in Mean Count Per Minute of Daily Physical Activity Measured by Accelerometer (PA-Ac)Baseline, Week 26, Week 52, Week 78, and Week 104

Change from baseline in mean count per minute of daily PA-Ac was reported in this outcome measure.

Trial Locations

Locations (19)

Massachusetts General Hospital Heart Center

🇺🇸

Boston, Massachusetts, United States

Providence Medical Research Providence Health Care

🇺🇸

Spokane, Washington, United States

The Prince Charles Hospital, Adult Congenital Heart Disease Unit

🇦🇺

Chermside, Australia

Queen Elizabeth Hospital

🇬🇧

Birmingham, United Kingdom

CHU de Québec Université Laval

🇨🇦

Quebec, Canada

Royal Adelaide Hospital

🇦🇺

Adelaide, Australia

Royal Prince Alfred Hospital

🇦🇺

Camperdown, Australia

Shanghai Children's Medical Center

🇨🇳

Shanghai, China

Rigshospitalet Kardiologisk Klinisk

🇩🇰

Copenhagen, Denmark

National Taiwan University Hospital

🇨🇳

Taipei, Taiwan

Royal Children's Hospital

🇦🇺

Parkville, Australia

Hôpital Cardiologique Du Haut-Lévêque

🇫🇷

Pessac, France

Auckland City Hospital

🇳🇿

Auckland, New Zealand

Beijing Anzhen Hospital

🇨🇳

Beijing, China

Fakultni nemocnice v Motole

🇨🇿

Praha 5, Czechia

Uniwersyteckie Centrum Kliniczne

🇵🇱

Gdansk, Poland

Krakowski Szpital Specjalityczny im. Jana Pawla II, Oddzial Kliniczny Chorob Serca i Naczyn

🇵🇱

Krakow, Poland

Hôpital Necker - Enfants Malades

🇫🇷

Paris, France

Wojewodzki Szpital Specjalistyczny We Wroclawiu

🇵🇱

Wrocław, Poland

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