Table 3.

Coexistence of PIK3CA and KRAS mutations

VariableNumberKRAS mutation (%)WT KRAS (%)P value
Tested18990 (100)99 (100)Not applicable
PIK3CA mutations (any)3122 (24)9 (9)0.006
 WT PIK3CA15868 (76)90 (91)
PIK3CA exon 9 mutations2116 (18)6 (6)0.01
 WT or exon 20 PIK3CA mutations16874 (82)93 (94)
PIK3CA exon 20 mutations85 (6)3 (3)0.48
 WT or exon 9 PIK3CA mutations18185 (94)96 (97)