Number or median
CD133: positive/negative 32/14
Median age (range) 59.1 (28-80)
Sex: male/female 29/17
PS: 0/1/2 34/12/0
Primary site: colon/rectum 30/16
Status of primary tumor: Resected/Unresected 35/11
Sites of metastasis: +/-  
Liver 38/8
Lung 33/13
Bone 6/40
Peritoneum 8/38
Lymph node 13/33
Local recurrence 3/43
Prior treatment  
5FU 46
Irinotecan 30
Oxaliplatin 44
Bevacizumab 22
No. of previous chemotherapy: one/two 17/29
Treatment:  
FOLFIRI with Cmab/ PT11 with Cmab/Cmab alone 15/21/10
CA19-9: >37.5/≤37.5 23/23
CEA: >5/≤5 38/8
PS: performance status; Cmab: cetuximab.
Table 1: Baseline characteristics.