Table 1.

Patients and disease characteristics

Main characteristicsN = 22 (%)
Age
 Median (range), years58(35–77)
Gender
 Male12(54.5%)
 Female10(45.5%)
Primary tumor location
 Right colon1(4.5%)
 Left colon11(50%)
 Rectum10(45.5%)
Archival tissue site
 Primary10(45.5%)
 Liver10(45.5%)
 Other2(9%)
Rebiopsy site
 Primary2(9%)
 Liver12(54.5%)
 Lung3(13.5%)
 Other5(23%)
Anti-EGFR mAb
 Cetuximab9(41%)
 Panitumumab13(59%)
Anti-EGFR reintroduction
 No11(50%)
 Yes11(50%)