Table 2 Primary KIT and PDGFRA mutational status in Study 1199

KIT primary mutation

 Any

197 (86)

  Exon 9

42 (18)

  Exon 11

143 (62)

  Exon 13

5 (2)

  Exon 17

6 (3)

  Other

1 (<1)

 Wild-type

9 (4)

 Absent^a

23 (10)

 Missing^b

1 (<1)

PDGFRA primary mutation

 Any

18 (8)^c

  Exon 10

1 (<1)

  Exon 12

1 (<1)

  Exon 18

5 (2)

  Other

11 (5)^c

 Absent^a

97 (42)

 Missing^b

115 (50)