1.

患者临床资料

Clinical characteristics of the patients

Variables	Characteristics	n	%
Gender	Male	60	53.6%
	Female	52	46.4%
Age (year)	≤65	90	80.4%
	>65	22	19.6%
Pathological type	Adenocarcinoma	85	75.9%
	Signet-ring cell carcinoma	23	20.5%
	Unknown	4	3.6%
Staging	Ⅳ stage	112	100.0%
Differentiation degree	Poor differentiation	71	63.4%
	Middle-low differentiation	18	16.0%
	Middle differentiation	14	12.5%
	Middle to well differentiation	2	1.8%
	Unknown	7	6.3%
Lauren type	Intestinal type	21	18.7%
	Diffused type	38	33.9%
	Mixed type	20	17.9%
	Unknown	33	29.5%
MSI status	pMMR	18	16.0%
	dMMR	4	3.6%
	Unknown	90	80.4%
Her-2 status	Negative	67	59.8%
	Positive	24	21.4%
	Unknown	21	18.8%
Liver metastasis	Presence	24	21.4%
	Absence	88	78.6%
Peritoneal metastasis	Presence	43	38.4%
	Absence	69	61.6%
Retroperitoneal lymph node metastases	Presence	14	12.5%
	Absence	98	87.5%
Site of metastasis	≤2	87	77.7%
	>2	25	22.3%