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Heart fat may hold clues to irregular heartbeat

NCT ID NCT07320261

Knowledge-focused Sponsor: xiaoya wang 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 uses CT scans to compare heart fat and chamber size in people with and without atrial fibrillation (AF). Researchers will enroll 600 adults to see if fat distribution differs between those with normal rhythm, occasional AF, and persistent AF. No drugs or treatments are tested—the goal is to better understand how heart fat might be linked to AF.

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 study could help doctors better understand why some people develop atrial fibrillation, potentially leading to earlier detection or new prevention strategies.
What could go wrong
This is an observational study, not a treatment trial. It only looks at images and data, so it cannot prove cause and effect. Results may not apply to all patients.

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 600 people

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

Expected to start

Jan 2026

An estimate. Start dates often move.

Expected to finish

Aug 2026

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

The study population consists of adult patients aged 18 years or older who undergo coronary CTA or left atrial CTA examination at The Second Affiliated Hospital of Zhejiang University School of Medicine. Participants will be categorized into three cohorts according to their confirmed cardiac rhythm status: sinus rhythm, paroxysmal atrial fibrillation, or persistent atrial fibrillation. All enrolled individuals must be willing to provide clinical baseline data and allow access to their CTA examination results, and be able to understand and cooperate with the study's data collection process. Patients under 18 years of age, those with incomplete clinical data or unreadable CTA images, and those who refuse to participate or cannot cooperate will be excluded from the study. The total planned sample size is 600-900 participants, with 200-300 participants in each cohort.

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: * Patients who undergo coronary CTA or left atrial CTA examination at The Second Affiliated Hospital of Zhejiang University School of Medicine; * Aged 18 years or older * Cardiac rhythm status is confirmed as sinus rhythm, paroxysmal atrial fibrillation, or persistent atrial fibrillation; * Willing to provide clinical baseline data and allow access to CTA examination results; * Able to understand and cooperate with the data collection process of the study. Exclusion Criteria: * Patients with incomplete clinical baseline data or unreadable CTA images; * Aged less than 18 years * Patients who refuse to participate in the study or cannot cooperate with data collection; * Other situations judged by the researchers to be unsuitable for inclusion in the study.

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Conditions

The condition(s) this trial relates to.

atrial fibrillation

As listed by the trial registrant

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

Atrial fibrillation (AF) CT

How to take part

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

  1. 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 ↗

  2. 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.

More trials for these conditions

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