Fig. 4

Subgroup survival analysis of the ferroptosis-related prognosis model in the TCGA cohort. A Subgroup survival analysis among different tumor stages. B Subgroup survival analysis among different tumor grades. C New tumor staging system based on current staging system and the ferroptosis-related prognosis model. D New tumor grading system based on current grading system and the ferroptosis-related prognosis model. TCGA, the cancer genome atlas