Exploration of Lymph Node Metastasis and Tumor Deposit in the Posterior Gastric Mesentery for Distal Gastric Cancer (zydgc001)

August 25, 2025 updated by: Jichao Qin

Exploration of Lymph Node Metastasis and Tumor Deposit in the Posterior Gastric Mesentery Following D2 Lymphadenectomy Plus Complete Mesogastric Excision in Patients Who Received Distal Gastrectomy: A Prospective Observational Study

This study aims to evaluate lymph node metastasis and tumor deposit in the posterior gastric mesentery following distal gastrectomy with D2 lymphadenectomy plus complete mesogastric excision (CME) in gastric cancer.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Since 1997, the AJCC has been using the number of lymph node metastases (pN staging) as a crucial indicator to assess the prognosis of gastric cancer patients. This system has been continuously updated, widely accepted by the global oncology community, and confirmed for its feasibility, applicability, convenience, and reproducibility. The number of metastatic lymph nodes in radical resection specimens of gastric cancer patients is the total count of lymph nodes with metastasis and is a key focus of postoperative pathological examination. D2 lymphadenectomy has become the standard operative procedure for advanced resectable gastric cancer and certain early-stage gastric cancers (diagnosed preoperatively with lymph node metastases). For advanced gastric cancer, there is growing evidence that the ideal surgical approach should involve D2 lymphadenectomy plus CME. In distal gastrectomy, the number of lymph nodes removed in D2 lymphadenectomy plus CME is significantly higher than in D2 dissection. Additionally, patients in the D2+CME group exhibit better long-term outcomes compared to the D2 group (DCGC01 study). Performing D2+CME surgery for distal gastric cancer involves the resection of the five major mesentery, including the posterior gastric mesentery, which may aid in thorough lymph node clearance and reduce cancer spillage. The posterior gastric mesentery comprises the No.11p and part of the No.11d lymph nodes. However, only the No.11p lymph nodes are resected in traditional D2 lymphadenectomy, resulting in incomplete lymph node clearance and postoperative tumor recurrence. Hence, the primary objective of this study is to examine lymph node metastasis in the posterior gastric mesentery following D2+CME in patients undergoing distal gastrectomy, aiming to offer evidence-based medical insights for standardizing surgical approaches in gastric cancer management.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
200

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • China
    • Zhejiang
      • Hangzhou, Zhejiang, China, 310000
        • Recruiting
        • Department of Gastrointestinal Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Patients who met the above inclusion and exclusion criteria

Description

Inclusion Criteria:

  1. Aged older than 18 years and younger than 85 years
  2. Primary gastric adenocarcinoma confirmed by preoperative pathology result
  3. cT2-4N0-3M0 at preoperative evaluation according to the American Joint 8 Committee on Cancer (AJCC) Cancer Staging Manual 7th Edition
  4. Patients who received distal gastrectomy with D2 lymphadenectomy plus complete mesogastric excision
  5. American Society of Anesthesiologists (ASA) class I, II, or III
  6. Written informed consent

Exclusion Criteria:

  1. Negative preoperative biopsy
  2. Too late tumour stage or metastasis (cT4b/M1)
  3. BMI>30 kg/m2
  4. Total gastrectomy or proximal gastrectomy
  5. previous neoadjuvant chemotherapy or radiotherapy
  6. Previous upper abdominal surgery
  7. Combined with other malignant diseases
  8. Reject operation

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Radical gastrectomy with membrane dissection
Procedure: distal gastrectomy with D2 lymphadenectomy plus complete mesogastric excision (CME) in gastric cancer
distal gastrectomy with D2 lymphadenectomy plus complete mesogastric excision (CME) in gastric cancer

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Rate of lymph node metastasis and tumor deposit in the posterior gastric mesentery
Time Frame: through study completion, an average of 1 year
through study completion, an average of 1 year

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Jichao Qin

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
May 1, 2024

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 31, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 31, 2027

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
September 1, 2024

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 15, 2024

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
December 17, 2024

Study Record Updates

Last Update Posted (Estimated)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
September 2, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 25, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
August 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 2024-0899

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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