Table 2.

Expressions of 5 molecular markers in gastric and small intestinal gastrointestinal stromal tumor

Protein	Gastric GISTs			Small intestinal GISTs
	Positive (%)		P value	Positive (%)		P value
	DOD (n = 13)	Alive (n = 48)		DOD (n = 15)	Alive (n = 27)
CD44s	5 (38.4)	35 (72.9)	0.020	15 (100)	23 (85.2)	0.397
MMP-9	11 (84.6)	23 (47.9)	0.018	11 (73.3)	22 (81.5)	0.339
TIMP-1	7 (53.8)	22 (45.8)	0.608	3 (20.0)	14 (51.9)	0.085
PTEN
< 50%	5 (38.5)	8 (8.3)	0.014	11 (73.3)	6 (22.2)	0.003
≥ 50%	8 (61.5)	44 (91.7)		4 (26.7)	21 (77.8)
Ki-67
< 5%	7 (53.8)	41 (85.4)	0.022	5 (33.3)	24 (88.9)	0.0001
≥ 5%	6 (46.2)	7 (14.6)		10 (66.7)	3 (11.1)

GIST: Gastrointestinal stromal tumor; MMP: Matrix metalloproteinase.