Second-line chemotherapy for patients with advanced gastric cancer: who may benefit?

V Catalano, F Graziano, D Santini, S D'Emidio, A M Baldelli, D Rossi, B Vincenzi, P Giordani, P Alessandroni, E Testa, G Tonini, G Catalano, V Catalano, F Graziano, D Santini, S D'Emidio, A M Baldelli, D Rossi, B Vincenzi, P Giordani, P Alessandroni, E Testa, G Tonini, G Catalano

Abstract

No established second-line chemotherapy is available for patients with advanced gastric cancer failing to respond or progressing to first-line chemotherapy. However, 20-40% of these patients commonly receive second-line chemotherapy. We evaluated the influence of clinico-pathologic factors on the survival of 175 advanced gastric cancer patients, who received second-line chemotherapy at three oncology departments. Univariate and multivariate analyses found five factors which were independently associated with poor overall survival: performance status 2 (hazard ratio (HR), 1.79; 95% CI, 1.16-2.77; P=0.008), haemoglobin </=11.5 g l(-1) (HR, 1.48; 95% CI, 1.06-2.05; P=0.019), CEA level >50 ng ml(-1) (HR, 1.86; 95% CI, 1.21-2.88; P=0.004), the presence of greater than or equal to three metastatic sites of disease (HR, 1.72; 95% CI, 1.16-2.53; P=0.006), and time-to-progression under first-line chemotherapy </=6 months (HR, 1.97; 95% CI, 1.39-2.80; P<0.0001). A prognostic index was constructed dividing patients into low- (no risk factor), intermediate- (one to two risk factors), or high- (three to five risk factors) risk groups, and median survival times for each group were 12.7 months, 7.1 months, and 3.3 months, respectively (P<0.001). In the absence of data deriving from randomised trials, this analysis suggests that some easily available clinical factors may help to select patients with advanced gastric cancer who could derive more benefit from second-line chemotherapy.

Figures

Figure 1
Figure 1
Overall survival curve for the whole group (n=175).
Figure 2
Figure 2
Survival curves according to the risk groups. Marks on survival curves denote censored observations.

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