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ClinicalTrials.gov public records Last synced Oct 17, 2026, 4:45 AM EDT

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Showing 1–24 of 39 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Macitentan Clear all
Completed Phase 3 Interventional Results available

Clinical Study Assessing the Efficacy and Safety of Macitentan in Fontan-palliated Subjects

NCT03153137
View directory record Official record
Conditions
Congenital Heart Disease
Interventions
Macitentan 10 mg, Placebo
Drug
Lead sponsor
Actelion
Industry
Eligibility
12 Years and older
Enrollment
142 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
6
States / cities
Birmingham, Alabama • Los Angeles, California • Boston, Massachusetts + 3 more
Source: ClinicalTrials.gov public record
Updated Mar 30, 2025 · Synced Oct 17, 2026, 4:45 AM EDT
Completed No phase listed Observational Results available

Study of Incidence of Respiratory Tract AEs in Patients Treated With Tyvaso® Compared to Other FDA Approved PAH Therapies

NCT01266265
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
inhaled prostacyclin, prostacyclin, subcutaneous and intravenous prostacyclin, oral ERA, oral PDE5 inhibitors
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
Not listed
Enrollment
1,333 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
88
States / cities
Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 65 more
Source: ClinicalTrials.gov public record
Updated Feb 17, 2016 · Synced Oct 17, 2026, 4:45 AM EDT
Completed Phase 2 Interventional Results available

Macitentan Use in an Idiopathic Pulmonary Fibrosis Clinical Study

NCT00903331
View directory record Official record
Conditions
Idiopathic Pulmonary Fibrosis
Interventions
ACT-064992 (macitentan), Placebo
Drug
Lead sponsor
Actelion
Industry
Eligibility
18 Years and older
Enrollment
178 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
15
States / cities
Birmingham, Alabama • Phoenix, Arizona • Scottsdale, Arizona + 12 more
Source: ClinicalTrials.gov public record
Updated Feb 17, 2014 · Synced Oct 17, 2026, 4:45 AM EDT
Terminated Phase 3 Interventional Results available

Clinical Study of Macitentan in Patients With PAH to Psychometrically Validate PAH-SYMPACT Instrument

NCT01847014
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Macitentan
Drug
Lead sponsor
Actelion
Industry
Eligibility
18 Years to 80 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
2
States / cities
Louisville, Kentucky • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 22, 2018 · Synced Oct 17, 2026, 4:45 AM EDT
Terminated Phase 3 Interventional Results available

Clinical Study to Assess the Long-term Safety, Tolerability, and Efficacy of Macitentan in Subjects With Eisenmenger Syndrome

NCT01739400
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Macitentan 10 mg tablet, once daily.
Drug
Lead sponsor
Actelion
Industry
Eligibility
12 Years and older
Enrollment
217 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
5
States / cities
Atlanta, Georgia • St Louis, Missouri • Las Vegas, Nevada + 2 more
Source: ClinicalTrials.gov public record
Updated Apr 16, 2019 · Synced Oct 17, 2026, 4:45 AM EDT
Terminated Phase 4 Interventional Results available

Crossover Study From Macitentan or Bosentan Over to Ambrisentan

NCT02885012
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Ambrisentan
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 80 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
2
States / cities
New Orleans, Louisiana • Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Apr 8, 2019 · Synced Oct 17, 2026, 4:45 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study of Macitentan and Tadalafil as a Fixed Dose Combination and the Free Combination in Healthy Adult Participants

NCT04235270
View directory record Official record
Conditions
Healthy
Interventions
FDC of Macitentan and Tadalafil, Macitentan, Tadalafil
Combination Product · Drug
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
18 Years to 55 Years
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Mar 30, 2025 · Synced Oct 17, 2026, 4:45 AM EDT
Active, not recruiting Phase 3 Interventional

Outcome Study Assessing a 75 Milligrams (mg) Dose of Macitentan in Patients With Pulmonary Arterial Hypertension

NCT04273945
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Macitentan 10 mg, Macitentan 37.5 mg, Macitentan 75 mg, Placebo
Drug
Lead sponsor
Actelion
Industry
Eligibility
18 Years and older
Enrollment
935 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2029
U.S. locations
43
States / cities
Phoenix, Arizona • Scottsdale, Arizona • La Jolla, California + 35 more
Source: ClinicalTrials.gov public record
Updated Oct 6, 2026 · Synced Oct 17, 2026, 4:45 AM EDT
Completed No phase listed Observational

Pulmonary Arterial Hypertension Quality Enhancement Research Initiative Extension Program

NCT01389206
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
observational study with patients treated with Tracleer, Ventavis, Veletri, Opsumit and/or Uptravi
Drug
Lead sponsor
Actelion
Industry
Eligibility
18 Years and older
Enrollment
797 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2018
U.S. locations
75
States / cities
Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 63 more
Source: ClinicalTrials.gov public record
Updated Aug 15, 2018 · Synced Oct 17, 2026, 4:45 AM EDT
Completed No phase listed Observational Results available

Data Analysis for Drug Repurposing for Effective Alzheimer's Medicines (DREAM) - PDE5

NCT05039086
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
PDE5 inhibitor, Endothelin Receptor Antagonists
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
65 Years and older
Enrollment
13,021 participants
Timeline
2021 – 2022
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 6, 2025 · Synced Oct 17, 2026, 4:45 AM EDT
Terminated Phase 3 Interventional Results available

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

NCT03775421
View directory record Official record
Conditions
Congenital Heart Disease With Fontan Circulation
Interventions
macitentan 10 mg
Drug
Lead sponsor
Actelion
Industry
Eligibility
12 Years and older
Enrollment
112 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
2
States / cities
Boston, Massachusetts • Spokane, Washington
Source: ClinicalTrials.gov public record
Updated Mar 7, 2023 · Synced Oct 17, 2026, 4:45 AM EDT
Completed No phase listed Observational

Retrospective Chart Review of First-time Opsumit® (Macitentan) Users in the United States

NCT03197688
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Notapplicable
Other
Lead sponsor
Actelion
Industry
Eligibility
Not listed
Enrollment
2,200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
105
States / cities
Phoenix, Arizona • La Jolla, California • Loma Linda, California + 89 more
Source: ClinicalTrials.gov public record
Updated Mar 30, 2025 · Synced Oct 17, 2026, 4:45 AM EDT
Completed Phase 3 Interventional Results available

Study of Macitentan (ACT-064992) on Morbidity and Mortality in Patients With Symptomatic Pulmonary Arterial Hypertension

NCT00660179
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
macitentan (ACT-064992), placebo
Drug
Lead sponsor
Actelion
Industry
Eligibility
12 Years and older
Enrollment
742 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
33
States / cities
Birmingham, Alabama • Pheonix, Arizona • Los Angeles, California + 28 more
Source: ClinicalTrials.gov public record
Updated Sep 28, 2015 · Synced Oct 17, 2026, 4:45 AM EDT
Completed Phase 3 Interventional Results available

A Study to Assess Whether Macitentan Delays Disease Progression in Children With Pulmonary Arterial Hypertension (PAH)

NCT02932410
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Macitentan, Standard-of-care
Drug · Other
Lead sponsor
Actelion
Industry
Eligibility
1 Month to 17 Years
Enrollment
165 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2025
U.S. locations
20
States / cities
Phoenix, Arizona • Los Angeles, California • San Francisco, California + 17 more
Source: ClinicalTrials.gov public record
Updated Mar 13, 2026 · Synced Oct 17, 2026, 4:45 AM EDT
Completed Phase 3 Interventional Results available

Clinical Study to Evaluate the Effects of Macitentan on Exercise Capacity in Subjects With Eisenmenger Syndrome

NCT01743001
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Macitentan 10 mg, Placebo
Drug
Lead sponsor
Actelion
Industry
Eligibility
12 Years and older
Enrollment
226 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
7
States / cities
Los Angeles, California • Palo Alto, California • Atlanta, Georgia + 4 more
Source: ClinicalTrials.gov public record
Updated Feb 23, 2018 · Synced Oct 17, 2026, 4:45 AM EDT
Withdrawn Phase 3 Interventional

Macitentan to Prevent PRVO

NCT05946811
View directory record Official record
Conditions
Pulmonary Embolism
Interventions
Macitentan 10mg
Drug
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 8, 2024 · Synced Oct 17, 2026, 4:45 AM EDT
Completed Phase 4 Interventional Results available

Endothelin-1 and Cardiac Allograft Vasculopathy (CAV)

NCT05373108
View directory record Official record
Conditions
Cardiac Allograft Vasculopathy
Interventions
Macitentan
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 12, 2024 · Synced Oct 17, 2026, 4:45 AM EDT
Completed Phase 2 Interventional Results available

Clinical Study to Assess the Efficacy and Safety of Macitentan in Patients With Pulmonary Hypertension After Left Ventricular Assist Device Implantation

NCT02554903
View directory record Official record
Conditions
Pulmonary Hypertension
Interventions
Macitentan 10mg, Placebo sugar pill
Drug
Lead sponsor
Actelion
Industry
Eligibility
18 Years and older
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
50
States / cities
Phoenix, Arizona • Tucson, Arizona • Beverly Hills, California + 42 more
Source: ClinicalTrials.gov public record
Updated Mar 30, 2025 · Synced Oct 17, 2026, 4:45 AM EDT
Terminated Phase 4 Interventional

A Study of Real-world Cohort of Pulmonary Arterial Hypertension (PAH) Participants

NCT04955990
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
PAH Therapies
Other
Lead sponsor
Actelion
Industry
Eligibility
18 Years and older
Enrollment
232 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
15
States / cities
Brandon, Florida • Tampa, Florida • Chicago, Illinois + 12 more
Source: ClinicalTrials.gov public record
Updated Feb 3, 2025 · Synced Oct 17, 2026, 4:45 AM EDT
Completed Phase 3 Interventional Results available

Clinical Study to Compare the Efficacy and Safety of Macitentan and Tadalafil Monotherapies With the Corresponding Fixed-dose Combination Therapy in Subjects With Pulmonary Arterial Hypertension (PAH)

NCT03904693
View directory record Official record
Conditions
Pulmonary Arterial Hypertension (PAH) (WHO Group 1 PH)
Interventions
FDC macitentan/tadalafil, Macitentan 10 mg, Tadalafil 40 mg, Placebo FDC, Placebo macitentan, Placebo tadalafil
Drug
Lead sponsor
Actelion
Industry
Eligibility
18 Years and older
Enrollment
187 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
26
States / cities
Fullerton, California • Los Angeles, California • Atlanta, Georgia + 22 more
Source: ClinicalTrials.gov public record
Updated Dec 19, 2025 · Synced Oct 17, 2026, 4:45 AM EDT
Completed No phase listed Observational

OPsumit USers Registry

NCT02126943
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Opsumit (macitentan)
Drug
Lead sponsor
Actelion
Industry
Eligibility
Not listed
Enrollment
2,686 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
144
States / cities
Mobile, Alabama • Phoenix, Arizona • Fullerton, California + 117 more
Source: ClinicalTrials.gov public record
Updated Mar 30, 2025 · Synced Oct 17, 2026, 4:45 AM EDT
Completed Phase 3 Interventional Results available

Clinical Study of Macitentan in Patients With Pulmonary Arterial Hypertension to Psychometrically Validate the PAH-SYMPACT Instrument

NCT01841762
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Macitentan
Drug
Lead sponsor
Actelion
Industry
Eligibility
18 Years and older
Enrollment
284 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
81
States / cities
Birmingham, Alabama • Phoenix, Arizona • Beverly Hills, California + 57 more
Source: ClinicalTrials.gov public record
Updated Feb 26, 2019 · Synced Oct 17, 2026, 4:45 AM EDT
Completed Phase 4 Interventional Results available

PORtopulmonary Hypertension Treatment wIth maCitentan - a randOmized Clinical Trial

NCT02382016
View directory record Official record
Conditions
Portopulmonary Hypertension
Interventions
Macitentan, Placebo
Drug · Other
Lead sponsor
Actelion
Industry
Eligibility
18 Years and older
Enrollment
85 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
29
States / cities
Phoenix, Arizona • La Jolla, California • Los Angeles, California + 23 more
Source: ClinicalTrials.gov public record
Updated Mar 30, 2025 · Synced Oct 17, 2026, 4:45 AM EDT
Completed Phase 3 Interventional Results available

Macitentan for the Treatment of Digital Ulcers in Systemic Sclerosis Patients

NCT01474109
View directory record Official record
Conditions
Systemic Sclerosis, Ulcers
Interventions
macitentan 3mg, macitentan 10mg, placebo
Drug
Lead sponsor
Actelion
Industry
Eligibility
18 Years and older
Enrollment
289 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
15
States / cities
Tucson, Arizona • Los Angeles, California • Aventura, Florida + 12 more
Source: ClinicalTrials.gov public record
Updated Jan 6, 2015 · Synced Oct 17, 2026, 4:45 AM EDT