A Study Evaluating the Long-Term Efficacy and Safety of Ralinepag in Subjects With PAH Via an Open-Label Extension
Run by United Therapeutics · NCT03683186 · Data updated 2026-11-12
Enrolling by invitation only. This study is not taking new participants. Its registered completion date is 2026-12.
Study ROR-PH-303, ADVANCE EXTENSION, is an open-label extension (OLE) study for participants with WHO Group 1 PAH who have participated in another Phase 2 or Phase 3 study of ralinepag.
Quick facts
| Phase | Phase 3 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 1000 (estimated) |
| Sponsor | United Therapeutics Industry-sponsored |
| Drugs / interventions | Ralinepag |
| Locations | 190 sites (Argentina, Australia, Austria, Belgium, Brazil, Bulgaria, Canada, Chile and more) |
| Trial ID | NCT03683186 on ClinicalTrials.gov |
What this trial studies
Study ROR-PH-303 is a multicenter, open-label extension (OLE) study for subjects with WHO Group 1 PAH who have participated in another Phase 2 or Phase 3 study of ralinepag and who qualify for entry based upon participation in the prior study. Subjects who discontinue participation in a prior study due to safety issues related to study medication or who fail to complete study procedures will not be eligible to enter Study ROR-PH-303. Subjects who meet all OLE entry criteria will be enrolled and will receive ralinepag in addition to their pre-existing PAH disease-specific background therapy. For subjects who are enrolled from an ongoing double-blind Phase 2 or Phase 3 ralinepag study, a 16-week blinded Dose Titration Period will be completed following enrollment into the OLE. Subjects previously on ralinepag will continue on the same dose during the Dose Titration Period as received in the original study and will also initiate placebo treatment in the OLE. Subjects who are enrolled from a non-blinded study or another OLE will not participate in the blinded Dose Titration Period in Study ROR-PH-303 but will be enrolled directly into the Treatment Period and continue on the dose of ralinepag received in the original study. All subjects will receive ralinepag in the OLE study until premature discontinuation of ralinepag due to an AE/serious adverse event (SAE) or other reason, marketing approval of ralinepag is granted in the region in which the study is conducted, or the stud…
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: 1. Evidence of a personally signed and dated informed consent form indicating that the subject has been informed of all pertinent aspects of the study prior to initiation of any study-related procedures. 2. Subjects who are willing and able to comply with scheduled visits, treatment plan, laboratory tests, and other study procedures. 3. Completed the protocol-defined Study Drug Termination Visit or End of Study Visit procedures in the preceding ralinepag study. 4. Both male and female subjects agree to use a medically acceptable method of contraception throughout the entire study period from informed consent through the 30 day Follow-up Visit, if the possibility of conception exists. Eligible male and female subjects must also agree not to participate in a conception process (i.e., actively attempt to become pregnant or to impregnate, sperm donation, in vitro fertilization) during the study and for 30 days after the last dose of ralinepag. Exclusion Criteria: 1. Subjects who prematurely discontinued investigational medicinal product (IMP) due to a drug-related AE/SAE or tolerability issue in the preceding ralinepag study in which they were enrolled, or subjects who did not complete all protocol defined study procedures at a Study Drug Termination Visit or End of Study Visit in the preceding ralinepag study. 2. Subjects who withdrew consent during participation in another ralinepag study. 3. Female subjects who wish to become pregnant or who have a positive pregnancy test on Day 1 (OLE Entry Visit), or are lactating or breastfeeding. 4. Subjects who have undergone lung or heart/lung transplant or the initiation of long-term parenteral or inhaled therapy with a prostacyclin during the time since participation in their original ralinepag study. 5. Subjects who had an emergency unblinding procedure in a prior Phase 2 or 3 study.
Where it's running
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St. Joseph's Hospital and Medical Center-Norton Thoracic Institute
Phoenix, Arizona, United States -
University of Arizona
Tucson, Arizona, United States -
UCSD Health Sciences
La Jolla, California, United States -
Ronald Reagan UCLA Medical Center
Los Angeles, California, United States -
Keck Hospital of USC
Los Angeles, California, United States -
VA Greater Los Angeles Healthcare System
Los Angeles, California, United States
Show 44 more locations
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University of California, Irvine
Orange, California, United States -
University of California Davis Medical Center
Sacramento, California, United States -
Santa Barbara Cottage Hospital
Santa Barbara, California, United States -
Stanford University Medical Center
Stanford, California, United States -
University of Colorado Hospital
Aurora, Colorado, United States -
National Jewish Health
Denver, Colorado, United States -
University of Florida
Gainesville, Florida, United States -
Central Florida Pulmonary Group
Orlando, Florida, United States -
Cleveland Clinic Florida
Weston, Florida, United States -
Emory University Hospital
Atlanta, Georgia, United States -
Piedmont Healthcare Pulmonary and Critical Care Research
Austell, Georgia, United States -
University of Chicago Medical Center
Chicago, Illinois, United States -
Ascension Alexian Brothers
Elk Grove Village, Illinois, United States -
Community Heart and Vascular Hospital
Indianapolis, Indiana, United States -
St. Vincent Medical Group, Inc.
Indianapolis, Indiana, United States -
University of Iowa Hospitals and Clinics
Iowa City, Iowa, United States -
University of Maryland Medical Center
Baltimore, Maryland, United States -
Tufts Medical Center
Boston, Massachusetts, United States -
Massachusetts General Hospital
Boston, Massachusetts, United States -
Boston University Medical Center
Boston, Massachusetts, United States -
Spectrum Health Medical Group
Grand Rapids, Michigan, United States -
Washington University School of Medicine
St Louis, Missouri, United States -
University of New Mexico
Albuquerque, New Mexico, United States -
NYU Langone Medical Center
New York, New York, United States -
University of Rochester
Rochester, New York, United States -
Duke University Medical Center
Durham, North Carolina, United States -
East Carolina University
Greenville, North Carolina, United States -
University of Cincinnati-Medical Science Building
Cincinnati, Ohio, United States -
The Ohio State University Wexner Medical Center
Columbus, Ohio, United States -
Integris Baptist Medical Center
Oklahoma City, Oklahoma, United States -
Oregon Health & Science University
Portland, Oregon, United States -
University of Pennsylvania
Philadelphia, Pennsylvania, United States -
Thomas Jefferson University Hospital
Philadelphia, Pennsylvania, United States -
Allegheny General Hospital
Pittsburgh, Pennsylvania, United States -
StatCare Pulmonary Consultants
Knoxville, Tennessee, United States -
Ascension Texas Cardiovascular
Austin, Texas, United States -
UT Southwestern Medical Center
Dallas, Texas, United States -
Memorial Hermann Hospital
Houston, Texas, United States -
The Methodist Hospital Research Institute
Houston, Texas, United States -
Vermont Lung Center
Burlington, Vermont, United States -
Carilion Clinic Pulmonary and Sleep Medicine
Roanoke, Virginia, United States -
Medical College of Wisconsin/Froedtert Hospital
Milwaukee, Wisconsin, United States -
Hospital Italiano
Ciudad Autonoma de Buenos Aires, Buenos Aires, Argentina -
Hospital PROVINCIAL "Dr. Jose Maria Cullen"
Santa Fe, Santa Fe de La Vera Cruz, Argentina
+140 more sites. See ClinicalTrials.gov for the full list.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.