Kaplan-Meier curves demonstrated that the median PFS was significantly different among mGPS groups (mGPS 0 vs. mGPS 2, P=0.02; mGPS 1 vs. mGPS 2, P=0.06). The median PFS in the mGPS 0, 1 and 2 groups was 12.1, 4.8 and 2.3 months, respectively. PFS, progression-free survival; mGPS, modified Glasgow Prognostic Score.