A Study of ROC-101 in Patients With Pulmonary Arterial Hypertension (PAH) and Pulmonary Hypertension Associated With Interstitial Lung Disease (ILD-PH) (ROCSTAR STUDY)

What this study is about

This study evaluates the effect of ROC-101 in adults with either Pulmonary Arterial Hypertension (PAH) or Pulmonary Hypertension Associated with Interstitial Lung Disease (ILD-PH). Each eligible participant will receive standard of care (SOC) plus ROC-101 for a 24-week treatment period, followed by a long-term extension period of the study through the end of the program or marketing approval/authorization.

Who can join (things the study team will check)

✅ You may be able to join if…

• Must be age 18 or older at the time of signing the informed consent form (ICF). The participant must understand and voluntarily sign an ICF prior to any study-related procedures
• Documented findings on a right heart catheterization (RHC) consistent with a diagnosis World Health Organization (WHO) Group 1 PAH or WHO GROUP 3 PAH
• Symptomatic Pulmonary Hypertension (PH) classified as WHO Functional Class II or III symptoms
• PAH participants: Pulmonary Vascular Resistance (PVR) of ≥ 5 Wood units, Pulmonary Capillary Wedge Pressure (PCWP) ≤ 15 mmHg and Mean Pulmonary Arterial Pressure (mPAP) > 20 mm Hg and ILD-PH participants: PVR of ≥ 3 Wood units, PCWP ≤ 15 mmHg and mPAP > 20 mm Hg
• Participants on stable background therapy for PAH or ILD-PH.
• Females of childbearing potential (as defined in protocol) must agree to use highly effective contraception (as defined in the protocol)
• Male participants must follow protocol-specified contraception guidance.
• Participants must be able to communicate well with Investigators, understand the study procedures in the ICF and are agreeable to complete the study in accordance with the protocol.
• Must be able to swallow tablets.
• Pulmonary function tests (PFT): PAH participants at Screening as follows: ILD-PH participants at Screening as follows: and,
  • Forced Vital Capacity (FVC) > 70% predicted; or if between 60% to 70% predicted, or if not possible to be determined, confirmatory High-Resolution Computed Tomography (HRCT) indicating no more than mild (<10% fibrosis) ILD; and
  • The ratio of FEV1 (first second)/FVC > 0.70 of predicted.
  • PFTs consistent with their ILD diagnosis and showing FEV1/ FVC ratio > 65% and HRCT > 10% fibrosis, based on the proportion of lung parenchyma affected by fibrotic changes.
  • Minimum FVC of 50% and diffusing capacity for carbon monoxide (DLCO) (corrected for Hb g/dl) >25%
• In PAH participants, i.e., Cohorts 1 and 2 only, ventilation-perfusion (VQ) scan (or, if unavailable, a negative CT pulmonary angiogram [CTPA] or pulmonary angiography result), any time prior to Screening or conducted during the Screening Period, with a normal or low probability result that is not clinically significant
• Acceptable Electrocardiogram (ECG) findings as assessed by the Investigator or qualified designee at the Screening Visit and at the Baseline Visit (Day 1), including each criterion as listed below:
  • Normal sinus rhythm (HR) between 40 and 100 beats per minute, inclusive);
  • Corrected QT Interval (QTcF) interval ≤ 450 msec (males) and ≤ 460 msec (females);
  • QRS interval ≤ 120 msec; if > 120 msec, result will be confirmed by a manual over read
• Body weight at the Screening visit and at Baseline (Day 1) is greater than 50.0 kg and the body mass index (BMI) is in the range of 19.00 to 36.00 kg/m2, inclusive
• 6MWD ≥ 100 and ≤ 550 meters repeated twice, once during Screening Period and once at the Baseline Visit (Day 1) and both values within 15% of each other, allowing for a third repeat if > 15% difference, calculated from the higher/highest value

🚫 You may not be able to join if…

• Diagnosis of PH WHO Groups 2, 4, or 5
• Diagnosis of the following PAH Group 1 subtypes: human immunodeficiency virus (HIV)-associated PAH, PAH associated with portal hypertension, schistosomiasis-associated PAH and pulmonary veno-occlusive disease and/or pulmonary capillary hemangiomatosis
• Positive blood test for hepatitis B virus surface antigen (HBsAg), hepatitis C virus (HCV) antibody (HCVAb) (unless participants have had treatment for HCV and have a negative HCV ribonucleic acid [RNA] polymerase chain reaction [PCR]) or HIV antibody
• Participants with known hypersensitivity to ROC-101 or any components of its formulations
• History of malignancy within the last 5 years, with the exception of fully excised or treated basal cell carcinoma, cervical carcinoma in-situ, or ≤ 2 squamous cell carcinomas of the skin
• History of clinically significant (as determined by the Investigator) non-PAH related cardiac, endocrine, hematologic, hepatic, immune, metabolic, urologic, pulmonary, neurologic, neuromuscular, dermatologic, psychiatric, renal, and/or other diseases that may limit participation in the study
• Participation in another clinical trial involving intervention with another investigational drug, approved therapy for investigational use, or investigational device within 4 weeks prior to Baseline Visit (unless it is in the follow-up period of an interventional study), or if the half-life of the previous product is known, within 5× the half-life prior to Baseline Visit (Day 1), whichever is longer
• Major surgery within 8 weeks prior to Baseline Visit (Day 1) or major surgery scheduled or planned in the main study. Participants must have completely recovered from any previous surgery prior to the Screening Visit
• Prior heart or heart-lung transplants, or a participant listed for heart and/or lung transplantation or prior pneumonectomy
• Pregnant or breastfeeding females
• Males who do not agree to protocol contraception guidelines
• Uncontrolled systemic hypertension as evidenced by sitting SBP > 160 mm Hg or sitting diastolic BP > 100 mm Hg during Screening Visit and Baseline Visit (Day 1) after a period of rest
• Systolic BP < 90 mm Hg during Screening Visit or at Baseline Visit (Day 1)
• History of known pericardial constriction or a clinically significant (more than trace or trivial [i.e., ≥10 mm]) pericardial effusion seen in diastole or in both systole and diastole on echocardiogram (ECHO) historically and confirmed on screening ECHO
• RHC contraindicated during the study per Investigator
• Cerebrovascular accident within 3 months (120 days) of start of Screening
• History of restrictive or constrictive or congestive cardiomyopathy
• Left ventricular ejection fraction (LVEF) < 50% on historical echocardiogram (ECHO) performed within 6 months prior to start of Screening period (and confirmed during the Screening ECHO) or grade 2 or higher diastolic dysfunction
• Any current symptomatic coronary disease (myocardial infarction, percutaneous coronary intervention, coronary artery bypass graft surgery, or cardiac anginal chest pain in the past 6 months (180 days) prior to start of Screening)
• History of acutely decompensated left heart failure or right heart failure within 90 days prior to Baseline, as per Investigator assessment

+ 16 more criteria — see the full checklist in the app.

✅ You may be able to join if…

• Participants must complete the main study period (defined as completion of assessments through the Week 24 visit)
• Women of child-bearing potential (WOCBP) must have negative pregnancy test
• All participants must comply with contraceptive guidance until 28 days after last dose of study drug for WOCBP and 90 days after the last dose of study drug for males

🚫 You may not be able to join if…

• Participant withdrew from main study period due to an AE related to study drug
• Female participant who is pregnant, breastfeeding, or intends to conceive during the long-term extension period
• Males who do not agree to follow protocol contraception guidelines
• Any condition that in the opinion of the investigator may pose a risk to the participant, interferes with the participant's participation or confounds assessments of the participant

Where this trial is running

• Arizona Pulmonary Specialists, Phoenix, Arizona, United States
• University of California Davis Health, Rancho Cordova, California, United States
• University of Colorado, Aurora, Colorado, United States
• George Washington University Medical, Washington D.C., District of Columbia, United States
• Mayo Clinic of Florida, Jacksonville, Florida, United States
• The University of Kansas Medical Center Research Institute, Kansas City, Kansas, United States
• University of Michigan, Ann Arbor, Michigan, United States
• Ohio State University, Columbus, Ohio, United States
• Bend Memorial Clinic, Bend, Oregon, United States
• Temple University, Philadelphia, Pennsylvania, United States
• Royal Prince Alfred Hospital, Camperdown, New South Wales, Australia
• Pulmonary Hypertension Research Queensland, Auchenflower, Queensland, Australia

+ 7 more sites.