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NCT07331454

PHASE3

Robotic vs Laparoscopic Gastrectomy for cT4a Gastric Cancer

Sponsor: The First Affiliated Hospital with Nanjing Medical University

View on ClinicalTrials.gov

Summary

The goal of this multicenter, randomized, phase III clinical trial is to test whether robot-assisted radical gastrectomy improves 3-year recurrence-free survival versus laparoscopy-assisted radical gastrectomy in adults aged 18-80 years with previously untreated, resectable cT4a gastric adenocarcinoma and non-bulky lymph nodes; the main questions are whether the robotic approach confers superior RFS and maintains equivalent peri-operative safety (Clavien-Dindo ≥ II complications) and better secondary oncologic outcomes, and participants will be randomized 1:1 to undergo standardized D2 resection via robotic or laparoscopic technique and followed for 5 years with scheduled recurrence, survival, and quality-of-life assessments.

Official title: Robot-Assisted Versus Laparoscopy-Assisted Gastrectomy in Patients With cT4a Gastric Cancer: A Multicenter, Randomized Controlled, Phase III Study

Key Details

Gender

All

Age Range

18 Years - 75 Years

Study Type

INTERVENTIONAL

Enrollment

335

Start Date

2026-02-01

Completion Date

2031-12-31

Last Updated

2026-01-12

Healthy Volunteers

Conditions

Gastric Cancer (GC)

Interventions

PROCEDURE

Robotic Gastrectomy

Radical gastrectomy (distal or total) performed with the da Vinci robotic system, including standardized D2 lymph-node dissection, aiming for R0 resection. All operative steps (lymph-node dissection, vessel ligation, digestive reconstruction) are completed with robotic instrumentation under 3-D high-definition vision and tremor-filtered wristed instruments.

PROCEDURE

Laparoscopic Gastrectomy

Radical gastrectomy procedure (distal or total) performed with conventional laparoscopic instruments, including the same mandatory D2 lymph-node dissection and R0 resection criteria.

Inclusion Criteria: Histologically confirmed gastric or Siewert type III (and selected type II) gastro-oesophageal junction adenocarcinoma, clinical stage cT4a without bulky lymph-node enlargement on contrast-enhanced CT or MRI No prior neoadjuvant chemotherapy, radiotherapy, or other anti-cancer therapy Tumour deemed amenable to R0 resection by a board-certified gastric surgeon and radiologist ECOG performance status 0-1 Estimated life expectancy ≥ 6 months Adequate organ function defined by: * ANC ≥ 1.2 × 10⁹/L, platelet ≥ 100 × 10⁹/L, Hb \> 8 g/dL (no transfusion/G-CSF within 14 days) * ALT/AST ≤ 2.5 × ULN, total bilirubin ≤ 1.5 × ULN (or isolated indirect hyperbilirubinaemia) * Serum creatinine ≤ 1.5 × ULN and calculated creatinine clearance ≥ 60 mL/min * INR or PT ≤ 1.5 × ULN (therapeutic low-dose anticoagulation allowed) * TSH and free T4 within normal limits or clinically insignificant deviation BMI ≥ 18.5 kg/m² or body weight ≥ 40 kg Signed informed consent Exclusion Criteria: cT4b disease, distant metastasis, or peritoneal cytology positive for malignancy Bulky lymph-node conglomerates (\> 3 cm short axis) or N3 disease precluding D2 dissection Previous gastrectomy or major upper-abdominal surgery (except uncomplicated laparoscopic cholecystectomy) within 5 years Concurrent malignancy within 5 years (except adequately treated basal-cell carcinoma, carcinoma in situ, or stage I tumours) Gastric cancer arising from emergency presentation (bleeding, perforation, obstruction) Planned multi-visceral resection for non-oncologic indication Active bleeding diathesis; INR \> 1.5 off anticoagulants; history of grade ≥ 3 bleeding within 4 weeks Arterial or venous thrombo-embolic event within 6 months Clinically significant cardiovascular disease: NYHA class III-IV heart failure, LVEF \< 50 %, myocardial infarction or unstable arrhythmia within 6 months, QTc ≥ 450 ms (men) or ≥ 470 ms (women) Severe chronic pulmonary disease: FEV₁ \< 50 % predicted or oxygen-dependent Uncontrolled diabetes (HbA1c \> 8 %), active autoimmune disease requiring systemic immunosuppression, or corticosteroids \> 10 mg/day prednisone equivalent within 14 days Active infection requiring systemic antibiotics, HIV, hepatitis B (HBV DNA ≥ 500 copies/mL), hepatitis C, or tuberculosis Pregnancy, lactation, or fertile participants unwilling to use effective contraception Psychological disorder, substance abuse, or any condition that, in the investigator's opinion, would compromise protocol compliance or safety

Locations (1)

First Affiliated Hospital with Nanjing Medical University

Nanjing, Jiangsu, China