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A Study to Evaluate Whether Macitentan is an Effective and Safe Treatment for Patients With Heart Failure With Preserved Ejection Fraction and Pulmonary Vascular Disease

A Multi-center, Double-blind, Placebo-controlled Phase 2b Study to Evaluate the Efficacy and Safety of Macitentan in Subjects With Heart Failure With Preserved Ejection Fraction and Pulmonary Vascular Disease

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03153111
Acronym
SERENADE
Enrollment
143
Registered
2017-05-15
Start date
2017-07-11
Completion date
2021-03-12
Last updated
2025-03-30

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

Conditions

Heart Failure With Preserved Ejection Fraction

Brief summary

This is a study to evaluate whether macitentan is an effective and safe treatment for patients with heart failure with preserved ejection fraction (HFpEF) and pulmonary vascular disease. The primary objective is to evaluate whether macitentan 10 mg reduces N-terminal pro-brain natriuretic peptide (NT-pro-BNP) as compared to placebo in these patients.

Interventions

DRUGMacitentan

macitentan 10 mg; film-coated tablet; oral use

DRUGPlacebo

film-coated tablet (identical to the macitentan tablet); oral use

Sponsors

Actelion
Lead SponsorINDUSTRY

Study design

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

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Signs or symptoms of Heart Failure (HF) (NYHA FC I I and II I ) requiring treatment with at least one oral diuretic (any type) * Left ventricular ejection fraction (LVEF) ≥ 40% (by echocardiography at Screening) * Structural heart disease consistent with heart failure with preserved ejection fraction (HFpEF) established by echocardiography at Screening * Elevated NT-proBNP * Pulmonary vascular disease or right ventricular dysfunction

Exclusion criteria

* Any prior valid measurement of LVEF \< 40%. An echocardiogram is considered valid if its quality is sufficient to allow accurate assessment of LVEF and if it is reflective of the true status of the subject * Cardiovascular co-morbidities (e.g., significant unrepaired structural valvular heart disease; acute coronary syndrome, coronary artery bypass graft (CABG) or percutaneous coronary intervention (PCI) within 3 months of Screening; uncontrolled heart rate from atrial fibrillation or atrial flutter, history of serious life-threatening or hemodynamically significant arrhythmia; history of or anticipated heart transplant or ventricular assist device implantation, etc) * Systolic blood pressure (SBP) ≥ 180 mmHg, or diastolic blood pressure (DBP) ≥ 110 mmHg during Screening * Hemoglobin \< 100g/L (\< 10 g/dl) at Screening * Significant parenchymal lung disease (e.g., severe COPD, moderate or severe restrictive lung disease, diffuse interstitial fibrosis or alveolitis, pulmonary thromboembolism) * Severe renal dysfunction with an estimated Glomerular Filtration Rate (eGFR) \< 30 mL/min per 1.73 m2 * Severe hepatic impairment, e.g., Child Pugh Class C Other protocol-defined inclusion/

Design outcomes

Primary

MeasureTime frameDescription
Percent of Baseline N-terminal Pro-brain Natriuretic Peptide (NT-proBNP) Assessed at Week 24Week 24Percent of baseline NT-proBNP assessed at Week 24 was reported. Percent of baseline is calculated as the ratio of the Week 24 NT-proBNP value over baseline value, expressed in percentage. NT-proBNP is one of the best established cardiovascular response markers among all available surrogates in heart failure (HF).

Secondary

MeasureTime frameDescription
Change From Baseline to Week 24 in the Clinical Summary Score Assessed by Kansas City Cardiomyopathy Questionnaire (KCCQ) ScoreBaseline to Week 24The KCCQ is a validated health related quality of life measure for heart failure. The KCCQ is a 23-item, self-administered instrument that quantifies physical function, symptoms (frequency, severity and recent change), social function, self-efficacy and knowledge, and quality of life. Clinical summary score is one of the quality of life variable of interest derived from KCCQ. Clinical summary score is the mean of domains: physical limitations score (6 items) and total symptom score (2 items \[symptoms frequency and symptom burden\]). The score is calculated by summing domain responses and then transforming scores to a 0-100 unit scale with higher scores indicating better health status.
Change From Baseline to Week 24 in Accelerometer-assessed Proportion of Time Spent in Light to Vigourous Physical ActivityBaseline to Week 24Physical activity is assessed by accelerometer as the proportion of time spent in light to vigorous physical activity based on a threshold of greater than (\>)100 activity counts per minute and expressed as change from baseline to Week 24.
Number of Participants With Worsening of Heart Failure (WHF) Events Over 52 WeeksWeeks 16, 24, 36, 52Number of participants with WHF events were reported. A WHF event includes HF death, hospitalization for WHF or an urgent visit for WHF.

Countries

Argentina, Austria, Brazil, Bulgaria, Czechia, Denmark, France, Germany, Hungary, Israel, Poland, Romania, Russia, Spain, Sweden, United Kingdom, United States

Participant flow

Pre-assignment details

Out of 143 enrolled participants, 1 participant was randomized by mistake and did not receive any dose of study drug. 142 participants received the study drug and were analyzed.

Participants by arm

ArmCount
Macitentan
Participants received macitentan 10 milligrams (mg) tablet orally once a day starting from Day 1 up to Week 52.
71
Placebo
Participants received placebo tablet orally once a day starting from Day 1 up to Week 52.
71
Total142

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyDeath25
Overall StudyLost to Follow-up10
Overall StudyPhysician Decision51
Overall StudyWithdrawal by Subject33

Baseline characteristics

CharacteristicMacitentanTotalPlacebo
Age, Continuous72.9 years
STANDARD_DEVIATION 10.11
73.6 years
STANDARD_DEVIATION 9.22
74.2 years
STANDARD_DEVIATION 8.25
Ethnicity (NIH/OMB)
Hispanic or Latino
2 Participants4 Participants2 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
69 Participants136 Participants67 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants2 Participants2 Participants
Race/Ethnicity, Customized
American Indian or Alaska Native
0 Participants1 Participants1 Participants
Race/Ethnicity, Customized
Black or African American
3 Participants4 Participants1 Participants
Race/Ethnicity, Customized
Other
0 Participants2 Participants2 Participants
Race/Ethnicity, Customized
White
68 Participants135 Participants67 Participants
Region of Enrollment
ARGENTINA
0 Participants1 Participants1 Participants
Region of Enrollment
AUSTRIA
1 Participants2 Participants1 Participants
Region of Enrollment
BRAZIL
2 Participants2 Participants0 Participants
Region of Enrollment
BULGARIA
4 Participants10 Participants6 Participants
Region of Enrollment
CZECH REPUBLIC
2 Participants3 Participants1 Participants
Region of Enrollment
DENMARK
0 Participants2 Participants2 Participants
Region of Enrollment
FRANCE
2 Participants6 Participants4 Participants
Region of Enrollment
GERMANY
9 Participants13 Participants4 Participants
Region of Enrollment
HUNGARY
3 Participants9 Participants6 Participants
Region of Enrollment
ISRAEL
13 Participants27 Participants14 Participants
Region of Enrollment
POLAND
3 Participants8 Participants5 Participants
Region of Enrollment
ROMANIA
5 Participants7 Participants2 Participants
Region of Enrollment
RUSSIAN FEDERATION
9 Participants20 Participants11 Participants
Region of Enrollment
SPAIN
0 Participants1 Participants1 Participants
Region of Enrollment
SWEDEN
1 Participants2 Participants1 Participants
Region of Enrollment
UNITED KINGDOM
4 Participants5 Participants1 Participants
Region of Enrollment
UNITED STATES
13 Participants24 Participants11 Participants
Sex: Female, Male
Female
46 Participants87 Participants41 Participants
Sex: Female, Male
Male
25 Participants55 Participants30 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
2 / 715 / 71
other
Total, other adverse events
57 / 7154 / 71
serious
Total, serious adverse events
29 / 7123 / 71

Outcome results

Primary

Percent of Baseline N-terminal Pro-brain Natriuretic Peptide (NT-proBNP) Assessed at Week 24

Percent of baseline NT-proBNP assessed at Week 24 was reported. Percent of baseline is calculated as the ratio of the Week 24 NT-proBNP value over baseline value, expressed in percentage. NT-proBNP is one of the best established cardiovascular response markers among all available surrogates in heart failure (HF).

Time frame: Week 24

Population: Full analysis set (FAS) included participants which were randomized to double-blind study treatment.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
MacitentanPercent of Baseline N-terminal Pro-brain Natriuretic Peptide (NT-proBNP) Assessed at Week 24108.39 percentage of baseline NT-proBNPGeometric Coefficient of Variation 0.65
PlaceboPercent of Baseline N-terminal Pro-brain Natriuretic Peptide (NT-proBNP) Assessed at Week 24106.27 percentage of baseline NT-proBNPGeometric Coefficient of Variation 0.55
p-value: 0.792390% CI: [0.88, 1.19]ANCOVA
Secondary

Change From Baseline to Week 24 in Accelerometer-assessed Proportion of Time Spent in Light to Vigourous Physical Activity

Physical activity is assessed by accelerometer as the proportion of time spent in light to vigorous physical activity based on a threshold of greater than (\>)100 activity counts per minute and expressed as change from baseline to Week 24.

Time frame: Baseline to Week 24

Population: FAS included participants which were randomized to double-blind study treatment. Here, 'N' (number of participants analyzed) specifies all participants who were evaluated for this OM.

ArmMeasureValue (MEAN)Dispersion
MacitentanChange From Baseline to Week 24 in Accelerometer-assessed Proportion of Time Spent in Light to Vigourous Physical Activity-0.024 proportion of time spentStandard Deviation 0.084
PlaceboChange From Baseline to Week 24 in Accelerometer-assessed Proportion of Time Spent in Light to Vigourous Physical Activity-0.005 proportion of time spentStandard Deviation 0.098
p-value: 0.366590% CI: [-0.05, 0.02]ANCOVA
Secondary

Change From Baseline to Week 24 in the Clinical Summary Score Assessed by Kansas City Cardiomyopathy Questionnaire (KCCQ) Score

The KCCQ is a validated health related quality of life measure for heart failure. The KCCQ is a 23-item, self-administered instrument that quantifies physical function, symptoms (frequency, severity and recent change), social function, self-efficacy and knowledge, and quality of life. Clinical summary score is one of the quality of life variable of interest derived from KCCQ. Clinical summary score is the mean of domains: physical limitations score (6 items) and total symptom score (2 items \[symptoms frequency and symptom burden\]). The score is calculated by summing domain responses and then transforming scores to a 0-100 unit scale with higher scores indicating better health status.

Time frame: Baseline to Week 24

Population: FAS included participants which were randomized to double-blind study treatment. Here, 'N' (number of participants analyzed) specifies all participants who were evaluated for this outcome measure (OM).

ArmMeasureValue (MEAN)Dispersion
MacitentanChange From Baseline to Week 24 in the Clinical Summary Score Assessed by Kansas City Cardiomyopathy Questionnaire (KCCQ) Score-2.37 score on a scaleStandard Deviation 16.12
PlaceboChange From Baseline to Week 24 in the Clinical Summary Score Assessed by Kansas City Cardiomyopathy Questionnaire (KCCQ) Score0.89 score on a scaleStandard Deviation 17.72
p-value: 0.217290% CI: [-8.17, 1.17]ANCOVA
Secondary

Number of Participants With Worsening of Heart Failure (WHF) Events Over 52 Weeks

Number of participants with WHF events were reported. A WHF event includes HF death, hospitalization for WHF or an urgent visit for WHF.

Time frame: Weeks 16, 24, 36, 52

Population: FAS included participants which were randomized to double-blind study treatment.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
MacitentanNumber of Participants With Worsening of Heart Failure (WHF) Events Over 52 WeeksWeek 1612 Participants
MacitentanNumber of Participants With Worsening of Heart Failure (WHF) Events Over 52 WeeksWeek 2414 Participants
MacitentanNumber of Participants With Worsening of Heart Failure (WHF) Events Over 52 WeeksWeek 3617 Participants
MacitentanNumber of Participants With Worsening of Heart Failure (WHF) Events Over 52 WeeksWeek 5218 Participants
PlaceboNumber of Participants With Worsening of Heart Failure (WHF) Events Over 52 WeeksWeek 5213 Participants
PlaceboNumber of Participants With Worsening of Heart Failure (WHF) Events Over 52 WeeksWeek 165 Participants
PlaceboNumber of Participants With Worsening of Heart Failure (WHF) Events Over 52 WeeksWeek 369 Participants
PlaceboNumber of Participants With Worsening of Heart Failure (WHF) Events Over 52 WeeksWeek 246 Participants

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