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Completed Phase 2 Interventional Results available

A Study of the Effectiveness of Sitaxsentan Sodium in Patients With Diastolic Heart Failure

ClinicalTrials.gov ID: NCT00303498

Public ClinicalTrials.gov record NCT00303498. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Oct 20, 2026, 2:26 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A PHASE 2 RANDOMISED, DOUBLE-BLIND, PLACEBO-CONTROLLED EXPLORATORY EFFICACY STUDY OF SITAXSENTAN SODIUM TO IMPROVE IMPAIRED EXERCISE TOLERANCE IN SUBJECTS WITH DIASTOLIC HEART FAILURE

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

The aim of this study was to determine whether long-term (≥ 6 months at the target dose) blockade of ETA receptors using sitaxsentan showed functional benefit in subjects with chronic Heart Failure and an Left Ventricular Ejection Fraction ≥50%.

Study identification

NCT ID
NCT00303498
Recruitment status
Completed
Study type
Interventional
Phase
Phase 2
Lead sponsor
Pfizer
Industry
Enrollment
200 participants

Conditions and interventions

Interventions

Drug

Eligibility (public fields only)

Age range
18 Years and older
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Mar 27, 2006 (Actual)
Primary completion
May 1, 2008 (Actual)
Completion
May 1, 2008 (Actual)
Last update posted
Jan 4, 2023

2006 – 2008

United States locations

U.S. sites
50
U.S. states
30
U.S. cities
42
Facility City State ZIP Site status
University of Alabama at Birmingham Birmingham Alabama 35294 —
Mobile Heart Specialists, PC Mobile Alabama 36608 —
Preventative and Research Cardiloogy Providence Hospital Mobile Alabama 36608 —
Central Arkansas Veterans HCS Little Rock Alaska 72205 —
Arizona Pulmonary Specialists, LTD Phoenix Arizona 85013 —
Parkview Research Center Tucson Arizona 85715 —
Southwest Heart Tucson Arizona 85715 —
University of Arkansas for Medical Services/Cardiology Department Little Rock Arkansas 72205 —
University of Southern California Medical Center Los Angeles California 90033 —
Orange County Heart Institute and Research Center Orange California 92868 —
Sacramento Heart & Vascular Medical Associates Sacramento California 95825 —
University of California San Diego California 92103-8411 —
Yale University School of Medicine, Cardiovascular Medicine New Haven Connecticut 06510 —
Capital City Research, CCRW Washington D.C. District of Columbia 20011 —
Florida Heart Group Pa Orlando Florida 32803 —
The University of Chicago Chicago Illinois 60637 —
Methodist Medical Center Peoria Illinois 61606 —
Cardiovascular Consultants of Maine Auburn Maine 04210 —
Massachusetts General Hospital Pulmonary and Critical Care Unit Boston Massachusetts 02114 —
Brigham and Women's Hospital Boston Massachusetts 02115 —
VA Med Ctr Minneapolis Minneapolis Minnesota 55417-2309 —
St. Louis University Hospital St Louis Missouri 63110 —
Washington Univ. School of Medicine St Louis Missouri 63110 —
Nebraska Heart Institute Lincoln Nebraska 68526 —
Catholic Medical Center d/b/a New England Heart Institute Manchester New Hampshire 03102 —
Newark Beth Israel Medical Center Newark New Jersey 07112 —
Buffalo Cardipul Assoc Buffalo New York 14221-5838 —
Columbia University Medical Center, New York Presbyterian Hospital New York New York 10032 —
Capital Cardiology Associates Troy New York 112180 —
Mid Carolina Cardiology Charlotte North Carolina 28204-3288 —
Mid Carolina Cardiology Huntersville North Carolina 28078 —
Wake Forest University Health Sciences Winston-Salem North Carolina 27157-1045 —
The Ohio State University Columbus Ohio 43210-1252 —
Oklahoma Foundation for Cardiovascular Research Oklahoma City Oklahoma 73120 —
The Oregon Clinic Portland Oregon 97220 —
University of Pennsylvania Philadelphia Pennsylvania 19104 —
Advanced Heart Failure & Transplant Center Philadelphia Pennsylvania 19140 —
Albert Einstein Medical Center Philadelphia Pennsylvania 19141 —
Allegheny General Hospital Pittsburgh Pennsylvania 15212 —
RHJ VA Medical Center Charleston South Carolina 29401 —
Black Hills Clinical Research Center Rapid City South Dakota 57701 —
Stern Cardiovascular Center Germantown Tennessee 38138 —
Baylor College of Medicine Pulmonary Section Houston Texas 77030 —
Kelsey Seybold Clinic Houston Texas 77030 —
Methodist DeBakey Heart Center Houston Texas 77030 —
Intermountain Medical Center (a.k.a. LDS Hospital) Murray Utah 84157 —
University of Utah Salt Lake City Utah 84132 —
Fletcher Allen Health Care Burlington Vermont 05401 —
Medical College of Virginia Richmond Virginia 23298 —
University of Wisconsin Hospital & Clinics Madison Wisconsin 53792 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

Non-U.S. locations

This page focuses on the U.S. directory. The official record also lists 2 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT00303498, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Jan 4, 2023 · Synced Oct 20, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT00303498 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →