Identification of a nine-gene prognostic signature for gastric carcinoma using integrated bioinformatics analyses

Figure 4 Performance of the risk score model in the training (the Cancer Genome Atlas-stomach adenocarcinoma) and validation (GSE15459) datasets. A: Receiving operating characteristic curve of the nine-gene signature in the training dataset (area under the curve = 0.751); B: Kaplan–Meier survival curve for gastric carcinoma patients in the training dataset (P < 0.001). C: Receiving operating characteristic curve of the nine-gene signature in the validation datasets (area under the curve = 0.682); D: Kaplan–Meier survival curve for gastric carcinoma patients in the validation dataset (P = 0.011). The blue curve represents low risk score group. The red curve represents high risk score group. AUC: Area under the curve.