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Massive brain aneurysm database aims to unlock hidden risks

NCT ID NCT05526352

Knowledge-focused Sponsor: University Hospital, Geneva Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study is creating a large database of information from 20,000 people with brain aneurysms. Researchers will look at genetic, environmental, and other factors to better understand what causes aneurysms and how different treatments affect outcomes. Participants are not given any new treatment; instead, their medical data is collected and analyzed to improve future care.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

About 20,000 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jun 2015

Expected to finish

Mar 2040

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Prospective consecutive recruitment of cases newly diagnosed intracranial aneurysm in each participating clinical center.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * able to provide consent or, in the event that a patient is incapable of providing consent, that a person is legally authorized to do so on behalf of the patient according to legal and ethical requirements of the country where the clinical centre is located. Patients: * must have an angiographically proven intracranial aneurysm (MRA\< CTA\< DSA accepted).The determination of SAH requires the presence of a subarachnoid haemorrhage be verified on CT or by lumbar puncture. MRA: Magnetic Resonance Angiography CTA: Computed Tomography Angiography DSA: Digital Subtracted Angiography Exclusion Criteria: * failure of a candidate to contribute clinical data, * refusal to provide informed consent.

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Conditions

The condition(s) this trial relates to.

brain aneurysm

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Intracranial aneurysm

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    16 sites in 10 countries. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Barcelona Hospital General de Cataluna

    COMPLETED

    Barcelona, Spain

  • Department of Neurosurgery, Cantonal Hospital St. Gallen

    RECRUITING

    Sankt Gallen, Switzerland

  • Department of Neurosurgery, Klinikum rechts der Isar, Technical University Munich

    RECRUITING

    Munich, Germany

  • Erasmus Medical Center

    COMPLETED

    Rotterdam, Netherlands

  • Helsinki University Central Hospital

    RECRUITING

    Helsinki, Finland

  • Hospital Clinic Barcelona

    COMPLETED

    Barcelona, Spain

  • ICAN

    RECRUITING

    Nantes, France

  • IMIM - Hospital del Mar

    RECRUITING

    Barcelona, Spain

  • Jagiellonian University Medical College

    RECRUITING

    Krakow, Poland

  • Klinik Hirslanded

    NOT_YET_RECRUITING

    Zurich, 8008, Switzerland

  • Kuopio University Hospital

    RECRUITING

    Kuopio, Finland

  • Montreal Neurological Institute and Hospital, McGill University

    RECRUITING

    Montreal, Canada

  • Neurochirurgie / Hôpitaux Universitaire de Genève

    RECRUITING

    Geneva, 1211, Switzerland

  • Radcliffe Infirmary

    COMPLETED

    Oxford, United Kingdom

  • Royal Hallamshire Hospital

    COMPLETED

    Sheffield, United Kingdom

  • University College London

    RECRUITING

    London, United Kingdom

  • University Hospital of Lausanne (CHUV), CoLaus Datacenter

    RECRUITING

    Lausanne, 1011, Switzerland

  • University Medical Center Utrecht

    RECRUITING

    Utrecht, Netherlands

  • University of California

    RECRUITING

    San Francisco, California, United States

  • University of Cincinnati College of Medicine

    RECRUITING

    Cincinnati, Ohio, United States

  • University of Pecs

    COMPLETED

    Pécs, Hungary

  • University of Virginia

    RECRUITING

    Virginia Beach, Virginia, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.