Increased keratin 80 expression predicts poor prognosis and promotes oxaliplatin resistance in gastric cancer

Table 1 Correlation of keratin 80 expression with clinicopathologic parameters in gastric cancer patients, n (%)

Parameters	Cases	KRT80		χ²	P value
		High expression	Low expression
Gender
Male	71	41 (59.4)	30 (61.2)	0.039	0.844
Female	47	28 (40.6)	19 (38.8)
Age (years)
< 61	55	31 (44.9)	24 (49)	0.189	0.664
≥ 61	63	38 (55.1)	25 (51)
Tumor location
Upper	64	40 (58)	24 (49)	0.933	0.334
Middle + lower	54	29 (42)	25 (51)
Tumor size (cm)
< 6	63	36 (52.2)	27 (55.1)	0.099	0.753
≥ 6	55	33 (47.8)	22 (44.9)
Tumor differentiation
Well + moderate	47	27 (39.1)	20 (40.8)	0.034	0.854
Poor + differentiated	71	42 (60.9)	29 (59.2)
Lymph nodes metastasis		58 (84.1)	38 (77.6)	0.800	0.371
pTNM stage
I + II	30	10 (14.5)	20 (40.8)	10.472	0.001
III + IV	88	59 (85.5)	29 (59.2)

TNM: Tumor-node-metastasis; KRT80: Keratin 80.