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New surgery aims to remove stomach tumors without major incisions

NCT ID NCT07550582

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
Registered, but not yet taking participants.
By invitation only This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 tests a new surgical method for removing non-cancerous or early cancerous growths (submucosal tumors) located where the stomach meets the esophagus. The technique combines two types of scopes (laparoscope and endoscope) with a special step to prepare the blood vessels before cutting. About 40 adults aged 18-80 with tumors 1-5 cm in size will be enrolled. The goal is to see if this approach is safe and effective, reducing the need for open surgery and complications.

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.

Phase

Phase 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

About 40 people

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

Started

Apr 2026

Expected to finish

Mar 2031

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.

Ages

18 to 80 years

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: * Aged 18 to 80 (inclusive), of either gender. * Preoperative gastroscopy, enhanced CT, and/or endoscopic ultrasonography (EUS) examinations led to a clinical diagnosis of submucosal tumor (SMT) at the gastroesophageal junction. * The maximum diameter of SMT is 1\~5 cm (based on radiological measurements). * The distance from the upper margin of the SMT to the dentate line of the esophagogastric junction is ≤2 cm. * Eastern Cooperative Oncology Group (ECOG) physical status score of 0 or 1. * Plan to undergo laparoscopic surgery, and the researcher judges that the patient is suitable for the combined surgical procedure involved in this study. * Volunteer to participate in this study and sign a written informed consent form. Exclusion Criteria: * SMT that meets the absolute indications for endoscopic treatment alone (such as lesions with a diameter of \<1cm that can be completely resected endoscopically). * Patients with severe systemic diseases such as heart, lung, liver, and kidney dysfunction, who are unable to tolerate surgery or anesthesia after evaluation. * Women who are pregnant or breastfeeding. * Previous history of upper abdominal surgery. * Previously received upper abdominal radiotherapy. * Have suffered from or currently suffer from other malignant tumors within the past 5 years. * Lesions accompanied by clear ulcers, metastasis, or lesions after neoadjuvant and conversion therapy. * The researcher determines that there are any other situations that make the participant unsuitable for participating in this study (such as mental disorders, poor adherence, etc.)

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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

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

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

    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

  • Peking University People' Hosptial

    Beijing, Beijing Municipality, 100044, China

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