Table 3.

Correlation of EGFR and HER2 copy number to EGFR mutation and response to gefitinib

EGFR disomy HER2 disomy, n (%)EGFR trisomy HER2 disomy, n (%)EGFR polysomy HER2 disomy, n (%)EGFR disomy HER2 trisomy, n (%)EGFR trisomy HER2 trisomy, n (%)EGFR polysomy HER2 polysomy, n (%)Total
ResponderEGFR mutated001 (14)01 (14)5 (72)7
EGFR unmutated2 (40)0001 (20)2 (40)5
Not responderEGFR mutated0000000
EGFR unmutated24 (80)2 (7)03 (10)1 (3)030
Total26 (62)2 (5)1 (2.5)3 (7)3 (7)7 (16)42