“…The populations selected were different in terms of proportion of patients with PS480, which ranged from 0 to 61%, metastatic patients (73 -100%), patients with liver metastases (57 -85%), patients with 41 prior chemotherapy lines (0 -29%), and median PFS after previous treatment (6.0 -7.9 months), which was rarely reported in other series, while in our exploratory analyses it resulted as an independent factor predicting the outcome of salvage therapy (Table 6). Furthermore, the sample size of most series is limited to o20 patients per treatment arm (Oettle et al, 2000;Ulrich-Pur et al, 2003;Milella et al, 2004;Reni et al, 2004), thus producing data with very large CIs. Given these differences, (Kozuch et al, 2001;Ulrich-Pur et al, 2003;Milella et al, 2004) and compares favourably with the 0 -10% objective responses reported elsewhere (Stehlin et al, 1999;Oettle et al, 2000;Ulrich-Pur et al, 2003;Cantore et al, 2004;Reni et al, 2004).…”