Development and Internal Validation of a Clinicopathologic Prognostic Model for Overall Survival in Esophageal Squamous Cell Carcinoma After Neoadjuvant Chemoimmunotherapy and Esophagectomy: A Multicenter Retrospective Cohort Study
Trial Snapshot
- Phase
- Not Applicable
- Status
- Completed
- Sponsor
- Enrollment
- 414
- Locations
- 3
- Primary Endpoint
- Overall Survival (OS)
Study Overview
Brief Summary
The goal of this retrospective observational study is to develop and internally evaluate a prognostic model for overall survival in patients with esophageal squamous cell carcinoma who received neoadjuvant chemoimmunotherapy followed by esophagectomy.
Researchers will review existing clinical, pathologic, and follow-up data from 414 patients treated at three medical centers between 2019 and 2025. The study will assess whether routinely available clinicopathologic factors can provide prognostic information beyond postoperative pathologic staging.
Study Design
- Study Type
- Observational
- Observational Model
- Cohort
- Time Perspective
- Retrospective
Eligibility Criteria
- Ages
- 18 Years to 80 Years (Adult, Older Adult)
- Sex
- All
- Accepts Healthy Volunteers
- No
Inclusion Criteria
- •Age 18 to 80 years Histologically confirmed esophageal squamous cell carcinoma Received at least 1 cycle of neoadjuvant chemoimmunotherapy before surgery Underwent subsequent esophagectomy
Exclusion Criteria
- •History of other malignancies Preoperative antitumor therapy other than neoadjuvant chemoimmunotherapy Incomplete clinicopathologic or follow-up data
Arms & Interventions
ESCC Cohort After Neoadjuvant Chemoimmunotherapy and Esophagectomy
This cohort includes patients aged 18-80 years with histologically confirmed esophageal squamous cell carcinoma who received at least one cycle of neoadjuvant chemoimmunotherapy followed by esophagectomy. Patients were treated at three participating medical centers between 2019 and 2025.
Outcomes
Primary Outcomes
Overall Survival (OS)
Time Frame: From the date of esophagectomy to death or last follow-up, up to 73 months.
Overall survival is defined as the interval from the date of esophagectomy to death from any cause. Participants alive at last contact are censored on the date of last follow-up.
Secondary Outcomes
No secondary outcomes reported
Investigators
Zhen-Yu Ding
Professor
Sichuan University