Different Cycles of Neoadjuvant PD-1 Blockades + Chemotherapy for Advanced Gastric Cancer

NCT ID: NCT06798376

Last Updated: 2025-01-29

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Total Enrollment

300 participants

Study Classification

OBSERVATIONAL

Study Start Date

2025-01-16

Study Completion Date

2025-01-31

Brief Summary

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The goal of this observational study is to analyze the impact of different durations of neoadjuvant PD-1 inhibitor combined with chemotherapy on tumor regression and safety in patients with advanced gastric cancer. The main questions it aims to answer are:

* Does the duration of neoadjuvant treatment influence tumor regression grading (TRG)?
* How does treatment duration affect perioperative safety and clinical outcomes?

Participants who have previously undergone neoadjuvant PD-1 inhibitor combined with chemotherapy followed by surgery as part of their routine medical care will have their clinical data retrospectively reviewed and analyzed.

Detailed Description

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Conditions

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Gastric Adenocarcinoma

Study Design

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Observational Model Type

COHORT

Study Time Perspective

RETROSPECTIVE

Study Groups

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Group A

The group A contains participants who received ≤4 cycles of neoadjuvant PD-1 inhibitor combined with chemotherapy and then received gastrectomy.

≤4 cycles of neoadjuvant PD-1 Inhibitors combined with chemotherapy

Intervention Type DRUG

Any PD-1 inhibitors combined with any chemotherapy regimen given before surgery for no more than 4 cycles

Gastrectomy

Intervention Type PROCEDURE

Any type of surgical procedure for gastric adenocarcinoma patients in which part or all of the stomach is removed

Group B

The group B contains participants who received ≥5 cycles of neoadjuvant PD-1 inhibitor combined with chemotherapy and then received gastrectomy.

≥5 cycles of neoadjuvant PD-1 Inhibitors combined with chemotherapy

Intervention Type DRUG

Any PD-1 inhibitors combined with any chemotherapy regimen given before surgery for no less than 5 cycles

Gastrectomy

Intervention Type PROCEDURE

Any type of surgical procedure for gastric adenocarcinoma patients in which part or all of the stomach is removed

Interventions

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≤4 cycles of neoadjuvant PD-1 Inhibitors combined with chemotherapy

Any PD-1 inhibitors combined with any chemotherapy regimen given before surgery for no more than 4 cycles

Intervention Type DRUG

≥5 cycles of neoadjuvant PD-1 Inhibitors combined with chemotherapy

Any PD-1 inhibitors combined with any chemotherapy regimen given before surgery for no less than 5 cycles

Intervention Type DRUG

Gastrectomy

Any type of surgical procedure for gastric adenocarcinoma patients in which part or all of the stomach is removed

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* Non-bedridden patients aged 18-90 years;
* Histologically confirmed gastric or gastroesophageal junction adenocarcinoma by biopsy;
* Evaluated as resectable advanced gastric cancer via CT, MRI, or laparoscopic exploration;
* No prior anti-tumor treatments such as chemotherapy, radiotherapy, or immunotherapy;
* No history of other malignancies within the past 5 years;
* Received at least one cycle of PD-1 inhibitor combined with chemotherapy preoperatively, with no restrictions on the specific PD-1 inhibitor or chemotherapeutic agents;
* Underwent radical gastrectomy after neoadjuvant therapy;
* No severe underlying diseases.

Exclusion Criteria

* Incomplete or inaccessible clinical and pathological data;
* Postoperative pathology confirming non-gastric or non-gastroesophageal junction adenocarcinoma;
* Distant metastases present prior to treatment;
* Concurrent diagnosis of other malignancies.
Minimum Eligible Age

18 Years

Maximum Eligible Age

90 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Chinese PLA General Hospital

OTHER

Sponsor Role lead

Responsible Party

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Xinxin Wang

Prof.

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Chinese PLA General Hospital

Beijing, , China

Site Status RECRUITING

Countries

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China

Central Contacts

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Xinxin Wang

Role: CONTACT

+86-15022709006

Shuo Li

Role: CONTACT

+86-16602664949

Facility Contacts

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Xinxin Wang

Role: primary

+86-15022709006

References

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Other Identifiers

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S2024-823

Identifier Type: -

Identifier Source: org_study_id

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