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Trial · NCT03738150

Registered outcomes26

Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.

ListOutcomeTime frameDescription
PrimaryChange From Baseline in Peak Oxygen Uptake (VO2 Max) at 24 WeeksBaseline and 24 weeksEach participant's VO2 max was measured by an invasive cardiopulmonary exercise test (iCPET) at baseline and at 24 weeks.
SecondaryChange From Baseline in Right Ventricular Stroke Volume (RV SV) at 24 WeeksBaseline and 24 weeksEach participant's RV SV was measured by cardiac MRI at baseline and at 24 weeks.
SecondaryChange From Baseline in Right Ventricular End-Systolic Volume (RV ESV) at 24 WeeksBaseline and 24 weeksEach participant's RV ESV was measured by cardiac MR imaging at baseline and at 24 weeks.
SecondaryChange From Baseline in Right Ventricular End-Diastolic Volume (RV EDV) at 24 WeeksBaseline and 24 weeksEach participant's RV EDV was measured by cardiac MR imaging at baseline and at 24 weeks.
SecondaryPercent Change From Baseline in Right Ventricular Ejection Fraction (RV EF) at 24 WeeksBaseline and 24 WeeksEach participant's RV EF was measured by cardiac MR imaging at baseline and at 24 weeks.
SecondaryChange From Baseline in Right Ventricular Stroke Volume Index (RV SVI) at 24 WeeksBaseline and 24 weeksEach participant's RV SVI was measured by cardiac MR imaging at baseline and at 24 weeks.
SecondaryChange From Baseline in Right Ventricular (RV) Mass at 24 WeeksBaseline and 24 weeksEach participant's RV mass was measured by cardiac MR imaging at baseline and at 24 weeks.
SecondaryChange From Baseline in Ventilatory Efficiency (VE/VCO2 Slope) at 24 WeeksBaseline and 24 weeks
VE/VCO2 slope refers to the slope of the regression line of Minute Ventilation (VE) in liters/minute in the Y-axis and corresponding carbon dioxide production per minute (VCO2) in liters/minute in the X-axis plotted with multiple measurements taken during exercise. Each participant's VE/VCO2 slope at peak exercise was measured by an iCPET at baseline and at 24 weeks.
SecondaryChange From Baseline in Cardiac Index at 24 WeeksBaseline and 24 weeksEach participant's cardiac index at peak exercise was measured by iCPET at baseline and at 24 weeks.
SecondaryChange From Baseline in Mean Pulmonary Arterial Pressure at 24 WeeksBaseline and 24 weeksEach participant's pulmonary arterial pressure at peak exercise was measured by iCPET at baseline and at 24 weeks.
SecondaryChange From Baseline in Arteriovenous O2 Content Difference (Ca-vO2) at 24 WeeksBaseline and 24 weeksEach participant's Ca-vO2 at peak exercise was measured by iCPET at baseline and at 24 weeks.
SecondaryChange From Baseline in Pulmonary Vascular Resistance (PVR) at 24 WeeksBaseline and 24 weeksEach participant's PVR, at resting supine, was measured by right heart catheterization (RHC) at baseline and at 24 weeks.
SecondaryChange From Baseline in 6-Minute Walk Distance (6MWD) at 24 WeeksBaseline and 24 weeks
6MWD is measured by an exercise test known as 6MWT that assesses aerobic capacity and endurance. It measures the distance covered over a time of 6 minutes and is used as an outcome measure by which to compare changes in performance capacity. Each participant's 6MWD was measured at baseline and at 24 weeks. An increase in the distance walked during the 6MWT indicates improvement in basic mobility.
SecondaryChange From Baseline in Concentration of Amino-Terminal Brain Natriuretic Propeptide (NT-proBNP) at 24 WeeksBaseline and 24 WeeksEach participant's laboratory biomarkers N-terminal prohormone brain-type natriuretic peptide (NT-proBNP) or brain-type natriuretic peptide (BNP) were measured at baseline and at 24 weeks.
SecondaryChange From Baseline in WHO (World Health Organization) Functional Class at 24 WeeksBaseline and 24 Weeks
The World Health Organization (WHO) functional class describes how severe a person's pulmonary hypertension symptoms are. There are four different classes - I is the mildest and IV the most severe form of pulmonary hypertension.
SecondaryNumber of Participants With One or More Adverse Events (AEs)Up to 24 weeks
An AE is any untoward medical occurrence in a study participant administered a pharmaceutical product that does not necessarily have to have a causal relationship with this treatment. An AE can therefore be any unfavorable and unintended sign, symptom, or disease temporally associated with the use of a medicinal product, whether or not related to the medicinal product.
SecondaryNumber of Participants Who Experienced One or More Events Indicative of Clinical Worsening of Pulmonary Arterial Hypertension (PAH)Up to 102 weeks
Events that indicate clinical worsening of PAH include death, need for and/or worsening-related listing for lung and/or heart transplant, need to initiate an approved PAH SOC rescue therapy, PAH-specific hospitalization, or functional deterioration (worsened WHO Functional Class AND 15% decrease in 6MWD).
SecondaryObserved Trough Concentration (Ctrough) of Sotatercept at Cycle 9Day 1 of Cycle 9 (Each cycle was 21 days.)Ctrough is the plasma concentration of a drug prior to administration.
SecondaryMaximum Plasma Concentration (Cmax) of Sotatercept at Cycle 9Day 1 of each 21-day cycle: Cycles 1-9
Cmax is a measure of the maximum amount of drug in the plasma after the dose is given. PopPK modeling approach was used to build a population PK model that captures the totality of the observed data from Cycles 1 to 9. The Cmax parameter is derived from this preliminary popPK modeling.
SecondaryMinimum Plasma Concentration (Cmin) of Sotatercept at Cycle 9Day 1 of each 21-day cycle: Cycles 1-9
Cmin is a measure of the minimum amount of drug in the plasma after the dose is given. PopPK modeling approach was used to build a population PK model that captures the totality of the observed data from Cycles 1 to 9. The Cmin parameter is derived from this preliminary popPK modeling.

Source ClinicalTrials.govtrials-2026-11-12-0.5.0

Sources 3

  • ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
  • ClinicalTrials.govNo license stated
  • NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
  • ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
  • ClinicalTrials.govnone stated
  • NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)

ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.

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