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2,000 brain bleed patients join hunt for recovery clues

NCT ID NCT07270419

Knowledge-focused Sponsor: Xiaolin Chen, MD 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study enrolls 2,000 adults who had a brain bleed from a ruptured aneurysm. Researchers will collect blood, spinal fluid, urine, and stool samples to analyze genes, proteins, and other molecules. The goal is to understand why some patients develop serious complications like delayed brain injury or pneumonia, and why recovery varies so widely. No new treatment is being tested—this is a fact-finding mission to guide future care.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this could reveal new biomarkers to predict complications like delayed brain injury after a brain bleed, pointing toward better monitoring or treatments.
What could go wrong
This is an observational study, not a treatment trial. It will not directly improve outcomes, and the findings may not lead to immediate clinical changes.

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 2,000 people

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

Started

Nov 2023

Expected to finish

Dec 2027

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

Adult patients (≥18 years) with aneurysmal subarachnoid hemorrhage (aSAH) confirmed by CTA, or DSA, whose aneurysms are treated by microsurgical clipping or endovascular coiling within 72 hours after onset. Participants will be consecutively recruited from multiple tertiary neurosurgical centers.

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: 1. Adult patients aged ≥18 years; 2. Confirmed diagnosis of aneurysmal subarachnoid hemorrhage (aSAH) by CTA, or DSA; 3. Aneurysm secured by either microsurgical clipping or endovascular coiling during hospitalization; 4. Time from onset to aneurysm treatment ≤ 72 hours; 5. Availability of biospecimens, including blood, cerebrospinal fluid (CSF), urine, or fecal samples collected during hospitalization; 6. Signed informed consent obtained from the patient or legal representative. Exclusion Criteria: 1. History of previous intracranial aneurysm surgery or embolization; 2. Non-aneurysmal SAH, traumatic SAH, or perimesencephalic non-aneurysmal hemorrhage; 3. Presence of malignancy, severe hepatic or renal dysfunction, or other systemic diseases that may affect survival or biomarker expression; 4. Severe cardiorespiratory insufficiency or unstable medical condition precluding study participation; 5. Pregnancy or lactation; 6. Refusal to participate or withdrawal of consent.

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Conditions

The condition(s) this trial relates to.

acquired aneurysmal subarachnoid hemorrhage subarachnoid hemorrhage

As listed by the trial registrant

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

Aneurysmal subarachnoid hemorrhage

How to take part

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

  1. The places running it

    1 site. 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

  • Beijing Tiantan Hospital

    RECRUITING

    Beijing, Beijing Municipality, 100070, China

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