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Construction of risk model. (A) The CI for each lambda. (B) The trajectory of each independent variable, the log of lambda on the horizontal axis and the coefficient on the vertical axis. (C) Risk score, survival time and survival status, and expression of four genes in the training set. (D) ROC curve and AUC of four‐gene signature in the training set. (E) KM survival curve of four‐gene signature in the training set.
