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Table 1 Patients characteristics and global results for FISH/CISH EGFR GCN analysis and clinical outcome.

From: Epidermal Growth Factor Receptor (EGFR) gene copy number (GCN) correlates with clinical activity of irinotecan-cetuximab in K-RAS wild-type colorectal cancer: a fluorescence in situ (FISH) and chromogenic in situ hybridization (CISH) analysis

 

Total Population

EGFR FISH GCN

≥ 2.6

EGFR FISH GCN

< 2.6

P

EGFR CISH GCN

= 2.12

EGFR CISH GCN

< 2.12

p

Number (%)

44

15 (40)

22 (60)

 

28 (64)

16 (36)

 

Sex (%)

       

Male

23 (52)

10 (67)

13 (60)

 

15 (53)

9 (56)

 

Female

21 (48)

5 (33)

9 (40)

 

13 (47)

7 (44)

 

Median age (range)

       
 

66 (39–78)

66 (39–78)

66 (39–78)

 

65 (39–78)

66 (40–78)

 

Previous lines of Chemotherapy (%)

       

1

14 (32)

5 (33)

8 (36)

 

8 (29)

6 (37)

 

> 2

30 (68)

10 (67)

14 (64)

 

20 (71)

10 (63)

 

Response Rate (%)

       

Complete Remission

0 (0)

0 (0)

0 (0)

 

0 (0)

0 (0)

 

Partial Remission

11 (25)

9 (60)

2 (9)

0.002

10 (36)

1 (6)

0.03

Stable Disease

12 (27)

5 (33)

8 (32)

 

10 (36)

2 (13)

 

Progressive Disease

21 (48)

1 (7)

13 (59)

0.001

8 (30)

13 (81)

0.01

Not assessable

0 (0)

0 (0)

0 (0)

 

0 (0)

0 (0)

 

Survival (Months)

       

Time to Progression

3.6

7.7

2.9

0.04

6.4

3.1

0.02

Overall Survival

10.6

16

9.5

 

10.6

10.3

 
  1. Only statistically significant p values have been included.