Table 1.

Tumor Genotype Versus Tumor Pathology Status

Genotype	Pathology Status
	Confirmed CD117+*		Confirmed CD117−†		Confirmed Non-GIST Sarcoma†		Unconfirmed CD117+‡
	No.	%	No.	%	No.	%	No.	%
KIT 8	1	0.3	0	0.0	0	0.0	0	0.0
KIT 9	31	8.4	0	0.0	0	0.0	2	5.6
KIT 11	269	73.1	6	60.0	0	0.0	19	52.7
KIT 13	3	0.8	0	0.0	0	0.0	2	5.6
KIT 17	4	1.1	0	0.0	0	0.0	0	0.0
PDGFRA 12	0	0.0	0	0.0	0	0.0	1	2.8
PDGFRA 18	4	1.1	2	20.0	1	7.1	1	2.8
WT	56	15.2	2	20.0	13	92.9	11	30.6
Total	368		10		14		36

Abbreviations: GIST, gastrointestinal stromal tumor; KIT 8, mutation of KIT exon 8; WT, wild type (no mutation of KIT or PDGFRA).

^*Five patients were ineligible (3, KIT 11; 1, KIT 9; 1, PDGFRA 18).

^†All patients were otherwise eligible except for pathology review.

^‡Two patients were ineligible (both with KIT 11 mutations).