A Study to Assess the Efficacy and Safety of 20, 40, and 80mg of Sildenafil Three Times a Day in the Treatment of Pulmonary Arterial Hypertension
Completed · Phase 3 · Has a placebo group
Conditions studied: Hypertension, Pulmonary
In brief
To evaluate the effect of three doses of oral sildenafil (20, 40 and 80 mg three times a day \[TID\]) on exercise capacity, as measured by the 6-Minute Walk test, as well as the safety and tolerability, after 12 weeks of treatment in subjects with pulmonary arterial hypertension who are aged 18 years and over. To investigate the plasma concentration-effect relationship and to determine the population pharmacokinetic (PK) parameters.
Key facts
- Study ID
- NCT00644605
- Run by
- Pfizer's Upjohn has merged with Mylan to form Viatris Inc.
- People needed
- 275
- Starts
- 2002-10-01
- Expected to finish
- 2003-11-01
- Last updated by the study team
- 2021-02-01
Who can join
Age: 18 and older. Sex: any. Healthy volunteers: not accepted.
You may qualify if…
- Included patients had primary pulmonary arterial hypertension, pulmonary hypertension secondary to connective tissue disease, or pulmonary hypertension with surgical repair at least 5 years previously; a mean pulmonary artery pressure greater than or equal to 25 mmHg and a pulmonary artery wedge pressure of less than or equal to 15 mmHg at rest, via right heart catheterisation within 21 days prior to randomisation; and a baseline 6-Minute Walk test distance of 100 m to 450 m.
You may not qualify if…
- Subjects with congenital heart disease, pulmonary hypertension due to thromboembolism, HIV, chronic obstructive airway disease, congestive heart failure or schistosomiasis; subjects with significant (ie > 2+) valvular disease other than tricuspid regurgitation or pulmonary regurgitation; and acutely decompensated heart failure within the previous 30 days; subjects with pulmonary hypertension secondary to any other etiology other than those specified in the inclusion criteria.
Where it is running
- Pfizer Investigational Site — Birmingham, Alabama, United States
- Pfizer Investigational Site — Birmingham, Alabama, United States
- Pfizer Investigational Site — La Jolla, California, United States
- Pfizer Investigational Site — La Jolla, California, United States
- Pfizer Investigational Site — Los Angeles, California, United States
- Pfizer Investigational Site — Los Angeles, California, United States
- Pfizer Investigational Site — Los Angeles, California, United States
- Pfizer Investigational Site — San Diego, California, United States
- Pfizer Investigational Site — Torrance, California, United States
- Pfizer Investigational Site — Torrance, California, United States
- Pfizer Investigational Site — Aurora, Colorado, United States
- Pfizer Investigational Site — Denver, Colorado, United States
- Pfizer Investigational Site — Chicago, Illinois, United States
- Pfizer Investigational Site — Shreveport, Louisiana, United States
- Pfizer Investigational Site — Baltimore, Maryland, United States
- Pfizer Investigational Site — Boston, Massachusetts, United States
- Pfizer Investigational Site — Ann Arbor, Michigan, United States
- Pfizer Investigational Site — Rochester, Minnesota, United States
- Pfizer Investigational Site — New York, New York, United States
- Pfizer Investigational Site — Durham, North Carolina, United States
- Pfizer Investigational Site — Nashville, Tennessee, United States
- Pfizer Investigational Site — Houston, Texas, United States
- Pfizer Investigational Site — Milwaukee, Wisconsin, United States
- Pfizer Investigational Site — Darlinghurst, New South Wales, Australia
- Pfizer Investigational Site — Birmingham, Alabama, United States
Full record on ClinicalTrials.gov
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