Figure 3. Identification and assessment of a three-lncRNA signature to predict OS in the primary dataset. (A) The risk score distribution, OS status and heatmap of the three-lncRNA signature in the primary dataset. (B) Kaplan-Meier curves for OS based on the three-lncRNA signature in the primary dataset. The tick-marks on the curve represent the censored subjects. The number of patients at risk is listed below the curve. (C) Time-dependent ROC curve analysis of the three-lncRNA signature for predicting OS in the primary dataset.