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Not listed Phase 2Phase 3 Interventional

Comparison of ATI-5923, a Novel Vitamin K Antagonist, With Warfarin in Patients Requiring Chronic Anticoagulation

ClinicalTrials.gov ID: NCT00691470

Public ClinicalTrials.gov record NCT00691470. 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 18, 2026, 9:27 AM 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 Randomized, Double Blind Comparison of ATI-5923, a Novel Vitamin K Antagonist, With Warfarin in Patients Requiring Chronic Anticoagulation

Brief summary

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

The purpose of this research study is to test an experimental drug ATI-5923 vs Coumadin. The study is intended to demonstrate ATI-5923 is superior to Coumadin for keeping INR values in the desired therapeutic range. Patients who require chronic anticoagulation with one or more of the following conditions are eligible for the study: atrial fibrillation or atrial flutter, prosthetic heart valve, venous thromboembolic disease, or history of myocardial infarction or cardiomyopathy will be enrolled.

Study identification

NCT ID
NCT00691470
Recruitment status
Not listed
Study type
Interventional
Phase
Phase 2, Phase 3
Lead sponsor
ARYx Therapeutics
Industry
Enrollment
600 participants

Conditions and interventions

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
May 2008 (Type not available)
Primary completion
Jun 2009 (Estimated)
Completion
Jun 2009 (Estimated)
Last update posted
Feb 2, 2010

2008 – 2009

United States locations

U.S. sites
41
U.S. states
23
U.S. cities
37
Facility City State ZIP Site status
Birmingham Heart Clinic, PC Birmingham Alabama 35235 —
Cardiology PC Birmingham Alabama 36693 —
The Heart Center, PC Huntsville Alabama 35801 —
Mobile Heart Specialists, PC Mobile Alabama 36693 —
Southwest Heart Tucson Arizona 85717 —
Escondido Cardiology Associates Escondido California 92025 —
University of California San Diego Medical Center San Diego California 92103 —
Progressive Clinical Research Vista California 92083 —
New West Physicians Clinical Research Golden Colorado 80401 —
Cardiology Associates of Fairfield County, PC Norwalk Connecticut 06851 —
Stamford Therapeutics Consortium Stamford Connecticut 06905 —
Cardiology Associates of Fairfield County, PC Trumbull Connecticut 06611 —
Florida Research Network, LLC Gainesville Florida 32605 —
Nature Coast Clinical Research Inverness Florida 34452 —
Jacksonville Heart Center - Pavillon Jacksonville Florida 32207 —
Jacksonville Center for Clinical Research Jacksonville Florida 32216 —
Jacksonville Heart Center - South Jacksonville Florida 32216 —
St. Luke's Cardiology Associates Jacksonville Florida 32216 —
Jacksonville Heart Center Jacksonville Beach Florida 32250 —
Orlando Heart Center Orlando Florida 32806 —
The Heart and Vascular Institute of Florida Safety Harbor Florida 34695 —
Georgia Heart Specialists Covington Georgia 30014 —
Northeast Georgia Heart Center, PC Gainesville Georgia 30501 —
Fox Valley Clinical Research Center, LLC Aurora Illinois 60504 —
Illinois Heart and Lung Research Center Normal Illinois 61761 —
DuPage Medical Group Winfield Illinois 60190 —
Community Clinical Research Center Anderson Indiana 46011 —
McFarland Clinic PC Ames Iowa 50010 —
Heart and Vascular Clinic Lacombe Louisiana 70445 —
Androscoggin Cardiology Associates Auburn Maine 04210 —
Endeavor Medical Research, PLC Alpena Michigan 49707 —
Steljes Cardiology, PC Henderson Nevada 89704 —
Cardiovascular Research Institute, LLC Canton Ohio 44710 —
Plaza Medical Group, PC Oklahoma City Oklahoma 73112 —
Bend Memorial Clinic Bend Oregon 97701 —
Lankenau Institute for Medical Research Wynnewood Pennsylvania 19096 —
Internal Medicine of Greer Greer South Carolina 29651 —
Medical Associates Clinic, LLP Pierre South Dakota 57501 —
Cardiovascular Research Institute of Dallas Dallas Texas 75231 —
York Clinical Research Norfolk Virginia 23510 —
Daniel Gottlieb, MD Burien Washington 98166 —

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

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT00691470, 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 Feb 2, 2010 · Synced Oct 18, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT00691470 live on ClinicalTrials.gov.

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