To investigate the value of CTCs and ctDNA in the diagnosis of metastasis in ascites/peritoneal flushing fluid and blood; To investigate the influence of laparoscopic CO2 pneumoperitoneum establishment on peritoneal and hematogenous metastasis of advanced gastric cancer; To explore the influence of the number and type of CTCs and ctDNA on metastasis and prognosis.
Study Type
OBSERVATIONAL
Enrollment
200
Circulating tumor cells test of ascites and blood for patients with gastric cancer.
Circulating tumor DNA test of ascites and blood for patients with gastric cancer.
First Hospital of Jinzhou Medical University
Jinzhou, Liaoning, China
RECRUITINGThe First Affiliated Hospital of China Medical University
Shenyang, Liaoning, China
ACTIVE_NOT_RECRUITINGQuantity of CTCs
To count the circulating tumor cells in ascites and blood.
Time frame: 1 day
Classification of CTCs
To classify the circulating tumor cells in ascites and blood.
Time frame: 1 day
Expression of ctDNA
To assess the expression of circulating tumor DNA in ascites and blood, including YAP1, LAMC1 and DDIT4.
Time frame: 1 day
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