Table 1.

Baseline patient characteristics

Characteristic	No. (%) (n=18)
Sex
Male	11 (61)
Female	7 (39)
Age, median (range, yr)	58 (31-74)
Disease status
Localized but unresectable	2 (11)
Recurrent	6 (33)
Initially metastatic	10 (56)
KIT expression	17 (94)
Type of PDGFRA mutation
Exon 18 D842V substitution	9 (50)
Non-D842V exon 18 mutation	4 (22)
Exon 12 mutation	5 (28)
ECOG performance status
0-1	17 (94)
2	1 (6)
Primary site
Stomach	15 (82)
Small bowel	1 (6)
Rectum	1 (6)
Peritoneum	1 (6)
Metastatic site
Liver	8 (50)
Peritoneum	5 (28)
Others	3 (19)

ECOG, Eastern Cooperative Oncology Group.