Figure 2 (A) Genes screened by lasso regression analysis. The lasso regression model and cross validation method were used to screen genes. When the number of variables was 13, the partial likelihood deviation is the minimum, corresponding to the minimum λ value. (B) Cross validation results. The regression coefficient map of genes in the lasso model. Dotted vertical lines were drawn at the optimal values by using the minimum criteria and the 1 standard error (SE) of the minimum criteria (the 1-SE criteria).