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CompletedNCT06591572Updated Sep 17, 2025

Single-port Robotic Transanal Total Mesorectal Excision

An interventional study of Single-port robotic transanal total mesorectal excision in Rectal Cancer Patients, sponsored by Daping Hospital and the Research Institute of Surgery of the Third Military Medical University. Completed at 1 site in China. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-09-17.

Sponsored by Daping Hospital and the Research Institute of Surgery of the Third Military Medical University · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
20
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

This is a phase 2a clinical trial based on the IDEAL framework to evaluate the safety, feasibility and clinical efficacy of single-port robotic transanal total mesorectal excision (SPr-taTME )surgery. For safety, intraoperative adverse events and 30-day morbidity. For efficacy, successful completion of predefined procedural steps without conversion. The transanal surgical platform consists of a single-port robotic system, while the transabdominal approach can be performed laparoscopically or with single-port robotic assistance.

Read the detailed description

The study assessed the intraoperative adverse events (device-related and/or procedure-related), postoperative complications, perioperative recovery outcomes, surgical specimen quality, and pathological indices of SPr-taTME in the treatment of mid-to-low rectal cancer.

02

Conditions studied

  • Rectal Cancer Patients

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Keywords

  • Single-port robotic
  • transanal total mesorectal excision
  • rectal cancer
03

In context

Rectal Neoplasms

1,762 studies on the registry are indexed under Rectal Neoplasms; 518 are open to participants now.

This study's enrollment of 20 is below the median of 65 across 1,298 interventional studies indexed under Rectal Neoplasms.

Browse Rectal Neoplasms studies →

Lead sponsor

Daping Hospital and the Research Institute of Surgery of the Third Military Medical University is the lead sponsor of 115 studies on the registry; 41 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • (1) Mid or low rectal cancer, 0-10 cm from the anal verge (MRI definition); (2) Histological biopsy showing adenocarcinoma; (3) Stage I-III (MRI and abdominal CT), including the downstaged after neoadjuvant therapy; (4) Intention for primary anastomosis; (5) Obtain the informed consent of the patient and his family; (6) Suitable for robotic or laparoscopic surgery. (7) Over 18 years old.

Exclusion criteria

Exclusion Criteria:

  1. T3 tumour with margins less than 1 mm to the mesorectal fascia or T4 tumour, determined by MRI-scan (staged after (chemo)radiotherapy if applicable) ;
  2. The anal sphincter complex or levator anal muscle is involved;
  3. Previous prostate or rectal surgery (excluding local excision) ;
  4. Emergency surgery was performed due to complications of a rectal tumor;
  5. Malignancy other than adenocarcinoma at histological examination;
  6. Pregnancy;
  7. Signs of acute intestinal obstruction;
  8. Multiple colorectal tumours;
  9. Familial Adenomatosis Polyposis Coli (FAP), Hereditary Non-Polyposis Colorectal Cancer (HNPCC), active Crohn's disease or active ulcerative colitis;
  10. Planned synchronous abdominal organ resections;
  11. Other malignancies in medical history, except adequately treated basocellular carcinoma of the skin or in situ carcinoma of the cervix uteri;
  12. Absolute contraindication to general anaesthesia or prolonged pneumoperitoneum, as severe cardiovascular or respiratory disease (ASA class > III)
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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
20 participants (actual)

Study arms

  • Experimental
    Single-port robotic transanal total mesorectal excision

    Single-port robotic transanal total mesorectal excision

    Procedure: Single-port robotic transanal total mesorectal excision

Interventions

  • ProcedureSingle-port robotic transanal total mesorectal excision

    Rectal resection by transanal TME with single-port robotic surgery

06

What researchers measure

Primary outcomes

  1. Intraoperative adverse events and 30-day postoperative complications

    Intraoperative adverse events (device and/or procedure-related). Events were recorded as Preferred Term and classified under System Organ Class as per MedDRA Common Terminology Criteria for Adverse Events (CTCAE) coding guidelines (https://evs.nci.nih.gov/ftp1/CTCAE/About.html). Postoperative complications will refer to any medical occurrence directly attributed to the surgical procedure within the first 30 days.

    Time frame: Intraoperative and postoperative 30 days

  2. Conversion rate

    Conversion to open or laparotomy surgery due to intraoperative complications , technical difficulties, or inability to successfully complete predefined procedural steps .

    Time frame: Intraoperative

Secondary outcomes

  1. Quality of specimen (as proposed and published by Quirke et al)

    Quality of specimen (as proposed and published by Quirke et al)

    Time frame: 7 days after surgery

  2. Operative time

    Record the total operation time, robotic docking time, transanal TME dissection time, and transabdominal TME dissection time respectively.

    Time frame: Date of surgery (Day 1)

07

Study locations

1 site
  • Huichao Zheng
    Chongqing, 400042, China
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 17, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06591572
Lead sponsor
Daping Hospital and the Research Institute of Surgery of the Third Military Medical University
Responsible party
Sponsor
First posted
Sep 19, 2024
Start date
Oct 24, 2024
Primary completion
Apr 1, 2025
Completion
Sep 1, 2025
Last update
Sep 17, 2025

Study contacts

Fan Li, MD
study chair · Daping Hospital and the Research Institute of Surgery of the Third Military Medical University

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Sep 2024. You cannot join it, but the record below documents what was studied.

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