CClinicalTrials.gg
TerminatedNCT00353574DarusentanUpdated Mar 18, 2014

DORADO-EX: Long-Term Safety Extension Study to the Phase 3 DORADO Study (Protocol DAR-311) of Darusentan in Resistant Hypertension

A Phase 3 interventional study of Darusentan in Hypertension, sponsored by Gilead Sciences. Terminated at 75 sites in 8 countries. Open to participants aged 35 Years to 80 Years. Per ClinicalTrials.gov, last updated 2014-03-18.

Sponsored by Gilead Sciences · Phase 3, Interventional, and Treatment

Why this study was terminated
Study DAR-312 did not meet primary co-endpoints
Phase
Phase 3
Study type
Interventional
Enrollment
282
Allocation
Randomized
Ages
35 Years to 80 Years
Sex
All
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Study summary

This is a research study of a new experimental drug called darusentan. Darusentan is not currently approved by the United States (U.S.) Food and Drug Administration (FDA) for use in the U.S., which means that a doctor cannot prescribe this drug. The purpose of this study is to evaluate the long-term safety of darusentan in subjects with resistant systolic hypertension despite treatment with full doses of three or more antihypertensive medications, including a diuretic.

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Conditions studied

  • Hypertension

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Keywords

  • Resistant Hypertension
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In context

Hypertension

6,689 studies on the registry are indexed under Hypertension; 965 are open to participants now.

This study's enrollment of 282 is above the median of 90 across 4,995 interventional studies indexed under Hypertension.

Browse Hypertension studies →

Lead sponsor

Gilead Sciences is the lead sponsor of 680 studies on the registry; 24 are open to participants now.

Of its 259 completed or terminated interventional studies of FDA-regulated products, 249 (96%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
35 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Subjects who have completed the Treatment Period of clinical trial DAR-311
  • Receiving and adhering to full doses of appropriate guideline-recommended antihypertensive drugs from three different classes of antihypertensive agents, including a diuretic

Exclusion criteria

Exclusion Criteria:

  • Subjects who discontinued treatment with study drug prior to the end of the Treatment Period of DAR-311 due to a study drug-related adverse event (AE)
  • Treatment with another endothelin receptor antagonist within 6 months of study entry
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Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
282 participants (actual)

Study arms

  • Experimental
    Darusentan 50 mg

    Darusentan 50 mg administered orally once daily

    Drug: Darusentan

  • Experimental
    Darusentan 100 mg

    Darusentan 100 mg administered orally once daily

    Drug: Darusentan

  • Experimental
    Darusentan 300 mg

    Darusentan 300 mg administered orally once daily

    Drug: Darusentan

Interventions

  • DrugDarusentan

    Darusentan capsules administered orally once daily

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What researchers measure

Primary outcomes

  1. Change in trough sitting systolic and diastolic blood pressure

    Time frame: Baseline to Week 14

Secondary outcomes

  1. Change in mean 24-hour systolic and diastolic ambulatory blood pressures.

    Time frame: Baseline to Week 14

  2. Percentage of subjects who reach systolic blood pressure goal

    Time frame: Week 14

  3. Change in estimated glomerular filtration rate (eGFR)

    Time frame: Baseline to Week 14

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Study locations

75 sites
  • Comprehensive Heart Failure Center
    Mobile, Alabama 36608, United States
  • Canyon Clinical Research
    Tucson, Arizona 85712, United States
  • Chrishard Medical Group
    Inglewood, California 90301, United States
  • VA Medical Center - WLA
    Los Angeles, California 90073, United States
  • Sacramento Heart and Vascular
    Sacramento, California 95825, United States
  • Apex Research Institute
    Santa Ana, California 92705, United States
  • Complete Renal Care
    Denver, Colorado 80220, United States
  • Connecticut Clinical Research, LLC
    Bridgeport, Connecticut 06606, United States
  • MedStar Diabetes Institute at Washington Hospital Center
    Washington, District of Columbia 20010, United States
  • White-Wilson Medical Center
    Fort Walton Beach, Florida 32569, United States
  • A.G.A. Clinical Trials
    Hialeah, Florida 33012, United States
  • Jacksonville Center for Clinical
    Jacksonville, Florida 32216, United States
  • Ricardo A. Bedoya, Cardiology
    Jupiter, Florida 33458, United States
  • International Research Association
    Miami, Florida 33156, United States
  • Cardiovascular Center of Sarasota
    Sarasota, Florida 34231, United States
  • Tampa Bay Nephrology Associates, PL
    Tampa, Florida 33603, United States
  • Metabolic Research Institute, Inc.
    West Palm Beach, Florida 33401, United States
  • Global Research Partners
    Calhoun, Georgia 30701, United States
  • Kula Research
    Honolulu, Hawaii 96816, United States
  • Chicago Heart & Vein Clinic
    Elk Grove Village, Illinois 60007, United States
  • Evanston Northwestern Healthcare
    Evanston, Illinois 60201, United States
  • Clinical Investigation Specialists, Inc.
    Gurnee, Illinois 60031, United States
  • Midwest Heart Foundation
    Lombard, Illinois 60148, United States
  • Medical Research Institute
    Slidell, Louisiana 70458, United States
  • Androscoggin Cardiology Associates
    Auburn, Maine 04210, United States
  • Maine Research Associate
    Auburn, Maine 04210, United States
  • Cardiovascular Consultants of Maine
    Scarborough, Maine 04074, United States
  • Clinical Associates
    Reisterstown, Maryland 21136, United States
  • Rockville Internal Medicine Group
    Rockville, Maryland 20854, United States
  • Professional Clinical Research
    Benzonia, Michigan 49616, United States
  • Hurley Medical Center
    Flint, Michigan 48503, United States
  • Professional Clinical Research
    Interlochen, Michigan 49643, United States
  • Specialty Medical Center
    Pahrump, Nevada 89048, United States
  • Physicians East, PA
    Greenville, North Carolina 27834, United States
  • The Lindner Clinical Trial Center
    Cincinnati, Ohio 45219, United States
  • COR Clinical Research
    Oklahoma City, Oklahoma 73003, United States
  • Southwest Cardiology Associates
    Oklahoma City, Oklahoma 73109, United States
  • Castlerock Clinical Research Consultants
    Tulsa, Oklahoma 74136, United States
  • Hillsboro Cardiology, PC
    Hillsboro, Oregon 97123, United States
  • Northeast Clinical Research Centers, Inc.
    Allentown, Pennsylvania 18103, United States
  • Heritage Cardiology Associates
    Camp Hill, Pennsylvania 17011, United States
  • Brandywine Clinical Research
    Downingtown, Pennsylvania 19335, United States
  • Green and Seidner Family Practice Associates
    Lansdale, Pennsylvania 19446, United States
  • Temple University Hospital
    Philadelphia, Pennsylvania 19140, United States
  • RI Hospital
    Providence, Rhode Island 02903, United States
  • Neem Research Group, Inc.
    Columbia, South Carolina 29201, United States
  • Internal Medicine & Industrial Medicine
    Desoto, Texas 75115, United States
  • T&R Clinical, P.A.
    Ft Worth, Texas 76117, United States
  • Pri-Med Care
    Lewisville, Texas 75067, United States
  • Innovative Clinical Trials
    San Antonio, Texas 78229, United States
  • Burke Internal Medicine, Inc.
    Burke, Virginia 22015, United States
  • Manassas Clinical Research Center
    Manassas, Virginia 20110, United States
  • Liberty Research Center
    Tacoma, Washington 98405, United States
  • CIMEL
    Buenos Aires, Argentina
  • DIM (Clinica Privada)
    Buenos Aires, Argentina
  • Fundapres
    Buenos Aires, Argentina
  • Hospital Britanico de Buenos Aires
    Buenos Aires, Argentina
  • Hospital Jose Maria Ramos Meijia
    Buenos Aires, Argentina
  • Hospital Municipal Bernardo Houssay
    Buenos Aires, Argentina
  • Medeos
    Buenos Aires, Argentina
  • Sanatorio Municipal
    Buenos Aires, Argentina
  • Centro Integrado Hospital do Rim e Hipertensao
    Sao Paulo, Brazil
  • Centro Integrado Hospital
    Sao Paulo, Brazil
  • Cambridge Cardiac Care Center
    Cambridge, Ontario N3H 3R8, Canada
  • Clinical Research Solutions
    Kitchener, Ontario N2G 1G5, Canada
  • Hvidovre Hospital
    Hvidovre, Denmark
  • Bispebjerg Hospital
    København, Denmark
  • CIC Hopital Jeanne D'Arc
    Dommartin les Toul, France
  • CHU de Grenoble
    Grenoble Cedex, France
  • Hôpital Civil, Service HTA maladies vasculaires
    Strasbourg Cedex, France
  • Cardiovascular Research, Karolinska Institue
    Stockholm, Sweden
  • University Hospital Umea
    Umea, Sweden
  • Townhead Surgery
    Scotland, United Kingdom
  • Avenue Surgery
    Wiltshire, United Kingdom
  • Hathaway Medical Centre
    Wiltshire, United Kingdom
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References and documents

Related links

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 18, 2014, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT00353574
Lead sponsor
Gilead Sciences
Responsible party
Sponsor
First posted
Jul 18, 2006
Start date
Sep 2006
Primary completion
Feb 2010
Completion
Apr 2010
Last update
Mar 18, 2014

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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This study is terminated, as verified in Feb 2014. You cannot join it, but the record below documents what was studied.

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