Clazosentan in Reducing Vasospasm-related Morbidity and All-cause Mortality in Adult Patients With Aneurysmal Subarachnoid Hemorrhage Treated by Surgical Clipping
Public ClinicalTrials.gov record NCT00558311. 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.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Prospective, Multi-center, Double-blind, Randomized, Placebo-controlled, Parallel-group Study to Assess the Efficacy and Safety of Clazosentan in Reducing Vasospasm-related Morbidity and All-cause Mortality in Adult Patients With Aneurysmal Subarachnoid Hemorrhage Treated by Surgical Clipping.
Study identification
- NCT ID
- NCT00558311
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 3
- Lead sponsor
- Idorsia Pharmaceuticals Ltd.
- Industry
- Enrollment
- 1,157 participants
Conditions and interventions
Conditions
Interventions
- Clazosentan Drug
- Placebo Drug
Drug
Eligibility (public fields only)
- Age range
- 18 Years to 75 Years
- 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
- Dec 13, 2007
- Primary completion
- Jun 14, 2010
- Completion
- Jul 12, 2010
- Last update posted
- Feb 16, 2020
2007 – 2010
United States locations
- U.S. sites
- 11
- U.S. states
- 8
- U.S. cities
- 11
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Barrow Neurosurgical Associates | Phoenix | Arizona | 85013 | — |
| Colorado Neurological Institute | Englewood | Colorado | 80113-2769 | — |
| Massachusetts General Hospital | Boston | Massachusetts | 02114 | — |
| Columbia University Medical Center | New York | New York | 10032 | — |
| State University of New York at Stony Brook-Health Sciences Center | Stony Brook | New York | 11794-8122 | — |
| University of Cincinnati-Department of Neurosurgery | Cincinnati | Ohio | 45219 | — |
| University Hospitals Case Medical Center-Department of Neurosurgery | Cleveland | Ohio | 44106 | — |
| Oregon Health & Science University-Oregon Stroke Center | Portland | Oregon | 97239 | — |
| Thomas Jefferson University School of Medicine-Jefferson Hospital for Neuroscience | Philadelphia | Pennsylvania | 19107 | — |
| University of Virginia Health System-Department of Neurosurgery | Charlottesville | Virginia | 22908 | — |
| Virginia Commonwealth University-Department of Neurosurgery | Richmond | Virginia | 23284 | — |
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 106 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT00558311, 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 16, 2020 · Synced Jul 21, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT00558311 live on ClinicalTrials.gov.