Table 4. Clinicopathological features of gastric cancer with A9 phenotype MICA.

	MICA phenotype
Parameter	A9 (n=35)	Non-A9 (n=72)	P-value
Age
<65	15	26	0.617
>65	20	46
Sex
Male	26	55	0.978
Female	9	17
Tumour location
Upper 1/3	7	9	0.512
Middle 1/3	10	28
Lower 1/3	18	34
Whole	0	1
Tumour size
<4 cm	19	30	0.287
4–8 cm	12	35
>8 cm	4	7
Cell differentiation
Well	1	1	0.424
Moderate	19	30
Poor	15	41
Borrmann type
0	19	30	0.256
I+II	5	11
III+IV	11	31
Infiltration type
Alpha	12	24	0.466
Beta	12	18
Gamma	11	31
Stromal reaction
Medullary	9	23	0.014a
Intermediate	25	33
Schirrous	1	16
Ming classification
Infiltrative	15	26	0.560
Expanding	20	46
Lauren's classification
Intestinal type	22	36	0.191
Diffuse type	13	36
Depth of tumour invasion
T1	14	28	0.744
T2	6	10
T3+T4	15	34
Lymph node metastasis
Negative	23	36	0.123
Positive	12	36
Liver metastasis
Negative	33	71	0.221
Positive	2	1
Peritoneal dissemination
Negative	34	70	1.000
Positive	1	2
TNM stage
I	18	34	0.292
II	7	6
III	6	21
IV	4	11

^aStatistic significance.