Fig. 1

The 7-lncRNA signature is associated with survivals of ESCC patients in the training and independent cohorts. The risk score was calculated for each patient according to the 7-lncRNA signature and the patients were divided into a high- or low-risk group based on their risk score. Then Kaplan–Meier survival analysis was performed on the patients. a Overall survival (OS) curves of 141 patients with high-risk or low-risk in the training cohort. b Disease-free survival (DFS) curves of 141 patients in the training cohort. c OS curves of 103 patients with high-risk or low-risk in the independent cohort. d DFS curves of 103 patients with high-risk or low-risk in the independent cohort. Note: in the Kaplan–Meier survival curves, the survival time unit is months