Table 4 Outcome of patients with KRAS or BRAF mutations stratified according to EGFR FISH status

From: Primary resistance to cetuximab therapy in EGFR FISH-positive colorectal cancer patients

 

Total

Response rate ( N/%)

Time to progression (months)

Survival (months)

EGFR FISH+/KRAS+

22

4/18.2

5.3

13.8

EGFR FISH+/KRAS

19

9/47.4

7.4

9.8

P-value

 

0.04

0.2

0.3

EGFR FISH−/KRAS+

20

0

3.5

7.8

EGFR FISH−/KRAS

19

1/5.3

3.2

10.8

P-value

 

0.4

1.0

0.5

EGFR FISH+/KRAS+ or BRAF+

24

4/16.7

5.4

9.5

EGFR FISH+/KRAS− and BRAF−

16

8/50.0

7.8

17.9

P-value

 

0.03

0.1

0.1

EGFR FISH−/KRAS+ or BRAF+

22

0

3.4

7.8

EGFR FISH−/KRAS− and BRAF−

17

1/5.9

3.8

10.8

P-value

 

0.4

0.5

0.5

  1. KRAS+: Presence of mutation; KRAS−: No mutation found.
  2. BRAF+: Presence of mutation; BRAF−: No mutation found.