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. 2022 Jan 5;22:15. doi: 10.1186/s12890-021-01799-7

Fig. 2.

Fig. 2

Identification of prognostic genes in the Freiburg cohort. (a) The intersection of genes between the DEGs and ferroptosis-related genes. (b) Heatmap plot of 19 prognostic DEGs. Red represents expression level of genes were up-regulated, blue represents expression level of genes were down-regulated. A relative color scheme uses the minimum and maximum values in each row to convert values to colors. (c) Forest plots of the univariate Cox regression analysis of the 19 prognostic DEGs. (d) A protein–protein interaction network for the 19 prognostic DEGs, 8 genes were excluded due to no connection with other genes