Plasma Metabolic Biomarkers for Gastric Cancer Diagnosis

Study Overview
=================
Brief Summary
-----------------
The aim of this observational study is to comprehensively analyze the metabolites in plasma samples from gastric cancer patients using advanced mass spectrometry detection technology, in conjunction with both broad-spectrum and targeted metabolomics approaches. The goal is to construct a dedicated plasma metabolite database for gastric cancer patients. Simultaneously, we will delve into the exploration and validation of a series of metabolic biomarkers for early gastric cancer diagnosis. The objective is to establish a safer, more convenient, and more sensitive early screening method, thereby providing a reliable scientific foundation and critical evidence for improving the early diagnostic process for individuals at high risk of gastric cancer.

Detailed Description
-----------------
Firstly, a wide-targeted metabolomic measurement will be conducted on plasma samples from the discovery cohort to identify potential metabolite candidate markers and construct a gastric cancer patient-specific metabolite database with extensive metabolite information. Secondly, a more precise targeted metabolomic measurement will be conducted in the modeling cohort. Bioinformatics methods will be used to conduct an in-depth analysis of a wide range of metabolite information to screen out metabolic marker combinations with high gastric cancer-specific diagnostic efficacy. Ultimately, an external validation cohort will be introduced to validate these metabolic biomarkers, aiming to ensure reliability and stability across different patient populations.

Official Title
-----------------
Identification and Multicentral Clinical Validation of Plasma Diagnostic Biomarkers for Gastric Cancer Based on Wide-targeted and Targeted Metabolomics

Conditions
-----------------
Gastric Cancer

Intervention / Treatment
-----------------
* Other: Gastric cancer


Participation Criteria
=================
Eligibility Criteria
-----------------
Inclusion Criteria: Confirmed diagnosis of gastric cancer or benign gastric diseases through gastroscopy and pathological examination. Collection of plasma samples prior to surgical treatment. Availability of complete clinical data. Exclusion Criteria: Previous reception of anti-tumor treatments (including radiotherapy, chemotherapy, etc.) before blood collection. Coexistence of other systemic tumors. Absence of plasma sample collection before surgical treatment. Incomplete clinical data. Pregnancy status.
Sexes Eligible for Study
-----------------
All

Accepts Healthy Volunteers
-----------------
Accepts Healthy Volunteers

Study Plan
=================
How is the study designed?
-----------------

Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Gastric cancer group<br>Patients diagnosed with gastric cancer, including early gastric cancer and advanced gastric cancer | Other: Gastric cancer<br>* Patients diagnosed with gastric cancer, including early gastric cancer and advanced gastric cancer<br>|
| Non-gastric cancer group<br>Patients diagnosed with benign gastric diseases or healthy controls | |

What is the study measuring?
-----------------
Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Plasma metabolite content | The outcome will be tested by metabolomics detection technology based on mass spectrometry | Before receiving treatment for gastric cancer |