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A multicenter retrospective cohort study on the clinical efficacy and prognosis of robot-assisted and laparoscopic surgeries after neoadjuvant chemotherapy combined with immunotherapy

A multicenter retrospective cohort study on the clinical efficacy and prognosis of robot-assisted and laparoscopic surgeries after neoadjuvant chemotherapy combined with immunotherapy

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR2600123808
Enrollment
Unknown
Registered
2026-04-30
Start date
2026-05-01
Completion date
Unknown
Last updated
2026-05-04

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

Conditions

Gastric cancer

Interventions

Observation group (robot group):None
Control group (laparoscopic group):None

Sponsors

The First Affiliated Hospital of the Army Medical University of the People's Liberation Army of China
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 75 Years

Inclusion criteria

Inclusion criteria: 1.Age >18 years old, <75 years old; 2.Pathologically confirmed as adenocarcinoma of the esophagogastric junction (Siewert II and III types), the pathological types include papillary adenocarcinoma, tubular adenocarcinoma, mucinous adenocarcinoma, and signet ring cell carcinoma; 3.Before neoadjuvant therapy, the clinical stage was confirmed as cII-cIII (cT2N+M0, cT3-4aN0/+M0) by gastroscopy + endoscopic ultrasound, enhanced CT, and PET-CT (optional), based on the AJCC 8th edition TNM staging system. 4.Preoperative examination revealed no distant metastasis, and the tumor did not directly invade the pancreas, spleen or other adjacent organs. 5.The number of cycles for neoadjuvant chemotherapy combined with immunotherapy is not limited. The treatment plan includes: SOX + ICIs or Xelox++ICIs; 6.After neoadjuvant therapy, after discussion by the MDT, radical surgery (R0 resection is expected) was deemed feasible, and robotic or laparoscopic radical resection surgery was accepted. 7.Preoperative ECOG physical status score: 0-1 points; 8.Preoperative ASA score: I-III level; 9.The clinical data are complete (including records of neoadjuvant therapy, surgical records, pathological reports, and follow-up data);

Exclusion criteria

Exclusion criteria: 1.It was confirmed during or after the operation to be in stage M1 (distant metastasis) or stage T4b. 2.There is a history of previous abdominal surgery (excluding laparoscopic cholecystectomy and appendectomy). 3.Having a history of other malignant tumors within the past 5 years; 4.Combined with severe dysfunction of the heart, lungs, liver and kidneys, unable to tolerate surgery; 5.Complications of gastric cancer (bleeding, perforation, obstruction) requiring emergency surgery; 6.The clinical data is incomplete (key data is missing).

Design outcomes

Primary

MeasureTime frame
Overall survival;

Countries

China

Contacts

Public ContactShi Yan

The First Affiliated Hospital of the Army Medical University of the People's Liberation Army of China

shiyandoctor@sina.com+86 13752909448

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: May 7, 2026