This study is an international, multi-center, randomized, double-blind, placebo-controlled study in subjects with PAH who are currently receiving approved therapy for their PAH (i.e., endothelin receptor antagonist and/or phosphodiesterase-5 inhibitor)or as a monotherapy treatment. Study visits will occur at 4 week intervals for 12 weeks with the key measure of efficacy being the 6-minute walk test. Study procedures include routine blood tests, medical history, physical exams, disease evaluation, and exercise tests. At the end of the first 12-weeks, the patient will be un-blinded. Patients will continue with another 12-Week open label portion with visits occuring at 4-week intervals. Patients who complete all assessments for 24-weeks will also be eligible to enter a 36 month open-label, extension phase study (FREEDOM - EXT).
This study is an international, multi-center, randomized, double-blind, placebo-controlled study in subjects with PAH who are currently receiving approved therapy for their PAH (i.e., endothelin receptor antagonist and/or phosphodiesterase-5 inhibitor)or as a monotherapy treatment. Study visits will occur at 4 week intervals for 12 weeks with the key measure of efficacy being the 6-minute walk test. Study procedures include routine blood tests, medical history, physical exams, disease evaluation, and exercise tests. At the end of the first 12-weeks, the patient will be un-blinded. Patients will continue with another 12-Week open label portion with visits occuring at 4-week intervals. Patients who complete all assessments for 24-weeks will also be eligible to enter a 36 month open-label, extension phase study (FREEDOM - EXT).
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
UT-15C 1 mg
UT-15C 0.25 mg
UT-15C 5 mg
Placebo
University of Alabama Birmingham
Birmingham, Alabama, United States
West Los Angeles VA Healthcare Center
Los Angeles, California, United States
UC Davis Medical Center
Sacramento, California, United States
Stanford University
Stanford, California, United States
Pulmonary Hypertension Clinic
Aurora, Colorado, United States
Change in six-minute walk distance from Baseline to Week 12
Time frame: 12 weeks
Borg Dyspnea Score
Time frame: 12 weeks
Clinical Worsening Assessment
Time frame: 12 weeks
Dyspnea Fatigue Index
Time frame: 12 weeks
Symptoms of PAH
Time frame: 12 weeks
World Health Organization (WHO) Functional Class
Time frame: 12 weeks
Trough 6-Minute Walk Distance
Time frame: 12 weeks
Trough Borg Dyspnea Score
Time frame: 12 weeks
Pro-B-type natriuretic peptide (Pro-BNP)
Time frame: 12 weeks
Optional hemodynamic parameters
Time frame: 12 weeks
Adverse events
Time frame: 12 weeks
Clinical Laboratory parameters
Time frame: 12 weeks
Electrocardiogram findings
Time frame: 12 weeks
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University of Iowa Health Care
Iowa City, Iowa, United States
Kansas University Medical Center
Kansas City, Kansas, United States
Maine Medical Center
Portland, Maine, United States
Tufts Medical Center
Boston, Massachusetts, United States
Massachusetts General Hospital
Boston, Massachusetts, United States
...and 21 more locations