|  | Non-responders | Responders |
---|---|---|---|
Samples | Â | 28 (PD) | 37 |
 |  |  | 7 (CR) |
 |  |  | 19 (PR) |
 |  |  | 11 (SD) |
Age, years | Â | 58.3 | 57.9 |
Gender | M | 18 | 24 |
F | 10 | 13 | |
Localization | R | 6 | 1 |
L | 21 | 34 | |
 | ND | 1 | 2 |
Stage at first diagnosis | I | 2 | 0 |
II | 1 | 5 | |
III | 5 | 2 | |
IV | 20 | 29 | |
ND | 0 | 1 | |
Grade | G1 | 2 | 3 |
G2 | 24 | 30 | |
G3 | 1 | 1 | |
ND | 1 | 3 | |
Treatment | Cetuximab | 23 | 29 |
Panitumumab | 5 | 8 | |
OS, average months | Â | 34.8 | 61.5 |
TTP, average months | Â | 3.6 | 14.9 |