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Can stroke treatment be delayed? new registry aims to find out

NCT ID NCT07536074

Knowledge-focused Sponsor: Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 will track 3,000 stroke patients in China who received clot-busting medication more than 4.5 hours after their symptoms began. Researchers want to see if this later treatment is still safe and helps reduce disability. The study is observational, meaning it simply watches what happens in real-world practice rather than assigning treatments.

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 registry could provide evidence that extending the time window for clot-busting drugs is safe and effective, potentially changing stroke treatment guidelines.
What could go wrong
This is an observational study, not a controlled trial, so results may be influenced by patient selection and other factors. It only includes patients who already received the treatment, so it cannot prove cause and effect.

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 3,000 people

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

Expected to start

Apr 2026

An estimate. Start dates often move.

Expected to finish

Dec 2029

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 acute ischemic stroke who receive intravenous thrombolysis more than 4.5 hours after last known well as part of standard clinical care.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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\. Age ≥ 18 years * 2\. Clinical diagnosed of acute ischemic stroke * 3\. Time from last known well (LKW) to initiation of intravenous thrombolysis \> 4.5 hours (including wake-up stroke and unwitnessed stroke) * 4\. Received intravenous thrombolysis * 5\. Provided written informed consent Exclusion Criteria: * 1\. Any condition judged by the investigator to make the participant unsuitable for study participation or follow-up (e.g., psychiatric disorders, cognitive impairment, or emotional disturbances).

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Conditions

The condition(s) this trial relates to.

ischemic stroke stroke disorder

As listed by the trial registrant

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

Acute ischemic stroke Stroke

How to take part

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

  1. The places running it

    2 sites. 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

  • Liuyang Jili Hospital

    Guankou, Hunan, China

  • Sun Yat-sen Memorial Hospital, Sun Yat-sen University

    Guangzhou, Guangdong, China

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