Table 2.

Mutation subtypes according to the primary location of GIST [7, 10, 14, 17, 19, 21, 24–26, 28, 39]

Genetic type	Whole GIST (%)	Gastric GIST (%)	Intestinal GIST (%)	Omental GIST (our review)
KIT mutation	77	65.2	79.7	60% (15/25)
Exon 9	8	1.8	23.0	4% (1/25)
Exon 11	67	61.4	54.0	56% (14/25)
Exon 13	1	1.2	2.3	―
Exon 17	1	0.8	0.4	―
PDGFRA mutation	10	22.9	1.2	28% (7/25)
Exon 12	1	3.1	0	8% (2/25)
Exon 14	< 1	0.5	0.4	―
Exon 18 (D842V)	5	19.3	0.8	20% (5/25)
Wild type	13	11.9	19.1	20% (5/25)