Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Sep 4, 2026, 10:57 PM EDT

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Showing 1–11 of 11 matching trials from the live ClinicalTrials.gov search.
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Conditions
Pulmonary Arterial Hypertension, Pulmonary Hypertension, PAH WHO Group I
Interventions
Sitaxsentan, Bosentan, Ambrisentan
Drug
Lead sponsor
West Penn Allegheny Health System
Other
Eligibility
Not listed
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2012
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Conditions
Heart Disease
Interventions
1mg/kg sitaxsentan sodium, 2mg/kg sitaxsentan sodium, Vehicle
Drug · Other
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
60 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2013
U.S. locations
1
States / cities
Charleston, South Carolina
Conditions
Cardiac Surgery Subjects, Subjects Undergoing CABG and/or Cardiac Valve Replacement
Interventions
sitaxsentan (Thelin), Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
48 Years to 82 Years
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
3
States / cities
Philadelphia, Pennsylvania • Charleston, South Carolina • Chattanooga, Tennessee
Conditions
Pulmonary Arterial Hypertension, Pulmonary Hypertension
Interventions
Sitaxsentan, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
16 Years to 80 Years
Enrollment
183 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
32
States / cities
Fountain Valley, California • Mather, California • Sacramento, California + 28 more
Conditions
Pulmonary Arterial Hypertension, Pulmonary Hypertension
Interventions
Sitaxsentan, Sitaxsentan and Sildenafil
Drug
Lead sponsor
Pfizer
Industry
Eligibility
16 Years to 80 Years
Enrollment
131 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
12
States / cities
Fountain Valley, California • Gainesville, Florida • Weston, Florida + 9 more
Conditions
Diastolic Heart Failure
Interventions
Sitexsentin sodium, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
50
States / cities
Birmingham, Alabama • Mobile, Alabama • Little Rock, Alaska + 39 more
Conditions
Pulmonary Arterial Hypertension, Pulmonary Hypertension
Interventions
Sitaxsentan, Sitaxsentan and Sildenafil
Drug
Lead sponsor
Pfizer
Industry
Eligibility
16 Years to 80 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Fountain Valley, California
Conditions
Pulmonary Hypertension
Interventions
sitaxsentan sodium
Drug
Lead sponsor
ICOS-Texas Biotechnology
Industry
Eligibility
16 Years to 75 Years
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
25
States / cities
Los Angeles, California • San Francisco, California • Torrance, California + 21 more
Conditions
Pulmonary Hypertension
Interventions
sitaxsentan sodium
Drug
Lead sponsor
Encysive Pharmaceuticals
Industry
Eligibility
12 Years to 75 Years
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
1
States / cities
Houston, Texas
Conditions
Pulmonary Arterial Hypertension
Interventions
Sitaxsentan
Drug
Lead sponsor
Pfizer
Industry
Eligibility
12 Years to 75 Years
Enrollment
1,192 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2011
U.S. locations
45
States / cities
Birmingham, Alabama • Phoenix, Arizona • Los Angeles, California + 31 more
Conditions
Healthy
Interventions
Sitaxentan sodium/Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 55 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Glendale, California