Fig 2 -

The construction and validation of the prognostic risk score based on six cuproptosis-mitochondrion genes (A, C, E, G and I for construction cohort from TARGET database; B, D, F, H and J for validation cohort from GSE21257). The Kaplan-Meier curve of patients in high-risk and low-risk group (A and B). The ROC curve of the 1-, 3- and 5- year overall survival (C and D). The distribution of risk score for each osteosarcoma patient (E and F). The overall survival rate and its survival status of osteosarcoma patients (G and H). The expression of these six cuproptosis-mitochondrion genes in the low-risk group and the high-risk group. Cool color represents low expression while warm color represents high expression (I and J).