Study ROR-PH-301, ADVANCE OUTCOMES, is designed to assess the efficacy and safety of ralinepag when added to pulmonary arterial hypertension (PAH) standard of care or PAH-specific background therapy in subjects with World Health Organization (WHO) Group 1 PAH.



Eligible Ages
Between 18 Years and 75 Years
Eligible Genders
Accepts Healthy Volunteers

Inclusion Criteria

  1. At least 18 years of age. 2. 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. 3. Subjects who are willing and able to comply with scheduled visits, treatment plan, laboratory tests, and other study procedures 4. Primary diagnosis of symptomatic PAH 5. Has had a right heart catheterization (RHC) performed at or within 3 years of Screening (RHC will be performed during Screening if not available) that is consistent with the diagnosis of PAH 6. Has WHO/ NYHA functional class II to IV symptoms. 7. If on PAH-specific background oral therapy, subject is on stable therapy with either an endothelin receptor antagonist (ERA) and/or a phosphodiesterase type 5 inhibitor (PDE5-I) or a soluble guanylate cyclase (sGC) stimulator. Subjects may be naïve to PAH-specific treatment. 8. Has a 6MWD of ≥150 meters.

Exclusion Criteria

  1. For subjects with known HIV-associated PAH, a cluster designation 4 (CD4+) T-cell count <200/mm3 within 90 days of Baseline. 2. Must not have 3 or more left ventricular dysfunction risk factors as defined in the study protocol. 3. Has evidence of more than mild lung disease on PFTs performed within 180 days prior to, or during Screening. 4. Has evidence of thromboembolic disease as determined by a V/Q lung scan or local standard of care diagnostic evaluation at or after diagnosis of PAH. 5. Current diagnosis of uncontrolled sleep apnea as defined by the Investigator. 6. Male subjects with a corrected QT interval using Fridericia's formula (QTcF) >450 msec and female subjects with a QTcF >470 msec on ECG measured at Screening or Baseline in subjects without evidence of intraventricular conduction delay (IVCD). In the presence of IVCD, subjects will be excluded if the QTcF >500 msec for both males and females. 7. Severe chronic liver disease (ie, Child-Pugh C), portal hypertension, cirrhosis or complications of cirrhosis/portal hypertension (eg, history of variceal hemorrhage, encephalopathy). 8. Confirmed active infection with hepatitis B virus (HBV) or hepatitis C virus (HCV). 9. Subjects with alanine aminotransferase (ALT) or aspartate aminotransferase (AST) ≥3 times the upper limit of normal (ULN) or total bilirubin ≥2 × ULN at Screening. 10. Chronic renal insufficiency as defined by serum creatinine >2.5 mg/dL or requiring dialysis at Screening. 11. Hemoglobin concentration <9 g/dL at Screening. 12. Subjects treated with an IV or SC prostacyclin pathway agent (eg, epoprostenol, treprostinil, or iloprost) at any time prior to Baseline (use in vasoreactive testing is permitted). 13. Subjects treated with an inhaled or oral prostacyclin pathway agent (iloprost, treprostinil, beraprost, or selexipag) that was stopped for a safety or tolerability issue. 14. Subject has pulmonary veno-occlusive disease. 15. Malignancy diagnosed and/or treated within 5 years prior to Screening, with the exception of localized non-metastatic basal cell or squamous cell carcinoma of the skin or in-situ carcinoma of the cervix excised with curative intent. 16. Subject tests positive for amphetamine, cocaine, methamphetamine, methylenedioxymethamphetamine or phencyclidine in urine drug screen performed at Screening, or has a recent history (6 months) of alcohol or drug abuse.

Study Design

Phase 3
Study Type
Intervention Model
Parallel Assignment
Primary Purpose
Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)

Arm Groups

ArmDescriptionAssigned Intervention
Ralinepag once daily extended-release tablets (oral) 50, 250, and 400 mcg titrated to the highest tolerated dose (maximum dose of 1450 mcg)
  • Drug: Ralinepag
    Other names:
    • APD811
Placebo Comparator
Matching placebo tablets (oral)
  • Drug: Placebo

Recruiting Locations

Boston University Medical Center
Boston, Massachusetts 02118
Kimberly Finch

More Details

United Therapeutics

Study Contact

United Therapeutics Global Medical Information

Detailed Description

Study ROR-PH-301 is a multicenter, randomized, double-blind, placebo-controlled study. Subjects who meet entry criteria will be randomly allocated 1:1 to receive ralinepag or placebo, in addition to their standard of care or PAH-specific background therapy, as applicable. The primary endpoint is the time (in days) from randomization to the first adjudicated protocol-defined clinical worsening event. All primary endpoint events will be adjudicated by an independent Clinical Event Committee (CEC) in a blinded fashion. Subjects who have a confirmed primary endpoint event adjudicated by the CEC at any time during the study and all subjects on treatment at the conclusion of the study (after the target number of events is achieved) will have the option to enroll in an open-label extension (OLE) study.


Study information shown on this site is derived from ClinicalTrials.gov (a public registry operated by the National Institutes of Health). The listing of studies provided is not certain to be all studies for which you might be eligible. Furthermore, study eligibility requirements can be difficult to understand and may change over time, so it is wise to speak with your medical care provider and individual research study teams when making decisions related to participation.