a trend toward significancep = 0.081
The interaction test between VEGF -1498 C/T variants and treatment effect, including both bevacizumab-group and control group, suggested that the relation of VEGF -1498 T/T genotype with poor outcome was significantly associated with the effect of bevacizumab in terms of PFS (p = 0.011) and with a trend toward significance with regard to OS (p = 0.081) (Table 5 ).