Cerebral Hemorrhage Risk in Hereditary Hemorrhagic Telangiectasia
Public ClinicalTrials.gov record NCT01158807. 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
Cerebral Hemorrhage Risk in Hereditary Hemorrhagic Telangiectasia (RDCRN# 6203, Protocol Version Date 07Jan10)
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
This study is one of the three projects of an NIH Rare Disease Clinical Research Consortium. A "consortium" is a group of centres sharing information and resources to perform research. The consortium research focuses on brain blood vessel malformations in three different rare diseases. The focus of this specific study is on Hemorrhagic Telangiectasia (HHT). HHT is a condition characterized by blood vessel malformations, called telangiectasia and arteriovenous malformations (AVMs), occurring in the brain, nose, lungs, stomach, bowels and liver. Brain AVMs (BAVMs) in HHT are difficult to study because they are rare, affecting approximately 10% of people with HHT. While other types of BAVMs have been studied in depth, studies in the HHT population have been very small. Here, we propose the first large-scale collaboration by joining with 12 HHT Centers of Excellence in North America to perform a large study of risk factors for bleeding from BAVMs, called intracranial hemorrhage (ICH) in HHT patients. The current standard of clinical practice across North America, is to screen all HHT patients for BAVMs with magnetic resonance imaging (MRI). If BAVMs are detected, patients are referred to a multidisciplinary neurovascular team for consideration for treatment. Treatment decisions are made on a case by case basis, balancing risks of complications from the BAVM with risks of therapy, but are limited by the few studies available in HHT. We hope that the knowledge we obtain about the risk factors for intracranial bleeding in these patients from this larger study will help us to improve the care of HHT patients. We plan to study risk factors for rupture of BAVMs, including primarily genetics and imaging characteristics of the BAVMs. Knowledge about risk factors will help in the care and management of HHT patients. This will be achieved through the collection of health information to construct a HHT database, blood sampling and banking (through the National Institute of Neurological Disorders and Stroke \[NINDS\]), and through genetic analysis at the University of California San Francisco.
Study identification
- NCT ID
- NCT01158807
- Recruitment status
- Completed
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 2,272 participants
Conditions and interventions
Conditions
Interventions
Not listed
Eligibility (public fields only)
- Age range
- Not listed
- 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
- Apr 7, 2010
- Primary completion
- Mar 31, 2025
- Completion
- Jun 29, 2025
- Last update posted
- Apr 21, 2026
2010 – 2025
United States locations
- U.S. sites
- 14
- U.S. states
- 12
- U.S. cities
- 14
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Barrow Neurological Institute | Phoenix | Arizona | 85013 | — |
| University of Arkansas for Medical Sciences | Little Rock | Arkansas | 72205 | — |
| David Geffen School of Medicine at University of California, Los Angeles | Los Angeles | California | 90095 | — |
| University of California, San Francisco | San Francisco | California | 94110 | — |
| UCHealth Pulmonary Vascular Disease Clinic - Anschutz Medical | Aurora | Colorado | 80045 | — |
| Yale University | New Haven | Connecticut | 06520-8042 | — |
| Georgia Regents University | Augusta | Georgia | 30912-3135 | — |
| Johns Hopkins University School of Medicine | Baltimore | Maryland | 21287 | — |
| HHT Foundation International, Inc. | Monkton | Maryland | 21111 | — |
| Mayo Clinic | Rochester | Minnesota | 55905 | — |
| Washington University School of Medicine | St Louis | Missouri | 63110 | — |
| University of North Carolina at Chapel Hill | Chapel Hill, NC | North Carolina | 27599 | — |
| Cincinnati Children's Hospital Medical Center | Cincinnati | Ohio | 45229 | — |
| University of Utah | Salt Lake City | Utah | 84132 | — |
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 5 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT01158807, 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 Apr 21, 2026 · Synced Sep 7, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT01158807 live on ClinicalTrials.gov.