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Robot vs. transanal surgery: which is better for low rectal cancer?

NCT ID NCT07651553

Disease control Sponsor: 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 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 compares two modern surgical techniques for removing low rectal cancer: transanal total mesorectal excision (taTME) and robot-assisted total mesorectal excision (RTME). Researchers want to see which method leads to fewer complications and less need to switch to open surgery. The trial will enroll 216 adults with early-stage rectal cancer and follow them for three years to check for cancer recurrence and survival.

What this could mean

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

Active substance
surgical procedure (transanal total mesorectal excision vs robot-assisted total mesorectal excision)
What this could lead to
If this trial succeeds, it could show that one surgical method is safer and more effective for removing low rectal cancer, helping surgeons choose the best approach for patients.
What could go wrong
This is a relatively small, early-stage study (216 participants) comparing two established techniques. The results may not apply to all patients, and individual outcomes depend on many factors beyond the surgical method.

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

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 216 people

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

Started

Jun 2025

Expected to finish

Apr 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.

Ages

18 to 75 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:Newly diagnosed patients aged 18-75 years. Pathologically confirmed adenocarcinoma (tubular, papillary, mucinous, or signet-ring). Tumor ≤7 cm from anal verge (MRI or DRE). Clinical stage T1-T3, N+, M0 (AJCC 8th ed.), suitable for sphincter-preserving TME. ASA score I-III. ECOG performance status 0-1. Informed consent obtained. \- Exclusion Criteria: Synchronous/metachronous colorectal cancers, local recurrence, or distant metastases. Bowel obstruction, perforation, bleeding requiring emergency surgery. Involvement of sphincter or adjacent organs requiring Inter-sphincter Resection (ISR). Poor preoperative anal function/incontinence. IBD or familial adenomatous polyposis (FAP). Pregnancy or lactation. Severe psychiatric illness. Other malignancies within 5 years. Severe comorbidities or infections making surgery intolerable. Judged unsuitable by investigator.

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Conditions

The condition(s) this trial relates to.

rectal cancer rectal neoplasm

As listed by the trial registrant

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

Rectal cancer patients Robotic assisted intervention

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

  • the sixth affiliated hospital of Sun Yat-sen University

    RECRUITING

    Guangzhou, Guangdong, 510655, China

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