New surgery aims to remove stomach tumors without major incisions
NCT ID NCT07550582
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.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
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About 40 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Apr 2026
- Expected to finish
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Mar 2031
An estimate. End dates often move.
- Lead sponsor
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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
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18 to 80 years
- Sex
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Anyone
- Healthy volunteers
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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 Hide 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.
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The places running it
1 site. The list below names each one and where it is.
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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.
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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
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Peking University People' Hosptial
Beijing, Beijing Municipality, 100044, China
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