Fig. 2

Overall survival curve of training the training cohort (n = 112) and the validation cohort (n = 114). Median survival time was 6.8 months in the training set and 5.8 months in the validation set. The 1-year OS rate was 28.0% in the training set and 27.0% in the validation set; the respective 3-year OS rates were 7.4% and 8.4%. MST, median survival time; OS, overall survival.