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Transanal Transection and Single-stapled Anastomosis (TTSS) in Rectal Cancer Patients

Postoperative and Long-term Outcomes of Transanal Tran-section and Single-stapled Anastomosis (TTSS) in Rectal Can-cer Patients: a Multicentric International IDEAL Stage 2b Prospective Parallel Cohort Study

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT06314646
Acronym
TTSS-REC
Enrollment
472
Registered
2024-03-18
Start date
2024-03-26
Completion date
2027-12-31
Last updated
2024-06-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Rectal Cancer, Surgery

Keywords

Rectal Cancer, Transanal Transection and Single-Stapled anastomosis, Total Mesorectal Excision

Brief summary

The Transanal Transection and Single-Stapled anastomosis (TTSS) technique may be a valid alternative to traditional double-stapled anastomosis for low rectal cancer surgery. This study aims to compare the postoperative and functional outcomes of patients receiving TTSS and traditional double-stapled anastomosis.

Detailed description

The Transanal Transection and Single-Stapled anastomosis (TTSS) technique has become a valid alternative to the standard double-stapled anastomosis approach in the surgical treatment of low rectal cancer. Recent evidence showed a significantly reduced number of anastomotic leaks in patients undergoing TTSS compared with patients receiving double-stapled anastomosis, suggesting that TTSS may be technically feasible and may provide a surgical advantage over the traditional double-stapled technique. However, these studies were severely limited by their single-center and retrospective nature. This study aims to confirm the retrospective findings by extending the data collection to additional countries and provide prospective data collection.

Interventions

Low anterior rectal resection with Transanal Transection and Single-Stapled anastomosis (TTSS)

PROCEDUREDouble-stapled Total Mesorectal Excision (TME)

Low anterior rectal resection with double-stapled Total Mesorectal Excision (TME)

Sponsors

Istituto Clinico Humanitas
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Adult (≥ 18 years old) patients, men and women, diagnosed with rectal cancer scheduled for elective rectal resection with Total Mesorectal Excision (TME) with double-stapled or Transanal Transection and Single-Stapled anastomosis (TTSS) approaches. * Patients scheduled for open, laparoscopic, or robotic surgery. * Patients preoperatively indicated for sphincter-saving procedures with or without protective-stoma.

Exclusion criteria

* Immediate or delayed hand-sewn coloanal anastomosis. * Patients requiring abdominoperineal resection (APR). Patients undergoing unplanned non-reconstructive surgery will be withdrawn from the study. * Patients with concurrent or previous invasive pelvic malignant tumors. Patients with an intraoperative evidence of invasive pelvic malignant tumors will be withdrawn from the study.

Design outcomes

Primary

MeasureTime frameDescription
Rate of anastomotic leak90 days after surgeryRate difference of clinical and/or radiological anastomotic leaks in the study cohorts.

Secondary

MeasureTime frameDescription
Postoperative Recovery Profile (PRP) score90 days after surgeryMedian difference of Postoperative Recovery Profile (PRP) \[ranging from 0 (completely recovered) to 68 (not recovered)\] in the study cohorts.
Proportion of patients fit for stoma closure12 months after surgeryProportion difference of patients fit for stoma closure in the study cohorts. Patients fit for stoma closure have already closed the stoma or have an intact anastomosis as demonstrated by a water contrast enema, Computed Tomography (CT) scan, endoscopic, or surgical revision.
Rate of postoperative complications90 days after surgeryRate difference of overall postoperative complications- classified according to the Clavien-Dindo scale \[ranging from 0 (no complications) to 5 (complications leading to death)\]- in the study cohorts.
Low Anterior Resection Syndrome (LARS) score6 months after surgery or stoma closureMedian difference of Low Anterior Resection Syndrome (LARS) score \[ranging from 0 (no LARS symptoms) to 42 (severe LARS symptoms)\] in the study cohorts.
Cancer recurrence24 months after surgeryIncidence rate difference of cancer recurrence- defined as any local or distal recurrence or metastasis- in the study cohorts.
Healthcare costs12 months after surgeryMedian difference of healthcare costs (direct and indirect) in the study cohorts.

Countries

Italy

Contacts

Primary ContactAnnalisa Maroli, PhD
colorapp@humanitas.it02 8224 7776
Backup ContactStefano De Zanet, MS
colorapp@humanitas.it02 8224 4623

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026