Figure 2. Differentially co-expressed NRLs and LASSO regression. (A) The volcano plot of the significant differential expression of NRLs. (B, C) A forest plot and a heatmap of the 14 prognostic NRLs. (D) Ten-fold cross-validation for error rate. (E) Least absolute shrinkage and selection operator regression. Asterisks (*) stand for significance levels, ** p < 0.01, * p < 0.05.