Fig. 2

Construction of a prognostic signature from the training set. a Volcano plot of 45 proteins that were significantly associated with OS in EC. The red dots represent high-risk proteins, while the green dots indicate low-risk proteins. b Forest plot of the multivariate Cox regression analysis in the training set. c Principal component analysis based on the expression level of 9 prognostic proteins in the training set. d Principal component analysis based on the expression level of 9 prognostic proteins in the testing set