Kaplan-Meier survival plot of hub genes using data of 531 renal cell carcinoma patients from TCGA database. CDH11, COL3A1 and COL5A2 expression levels were not remarkably related to survival rates of RCC patients (A, B, D). COL5A1, COL6A3 and COL11A1 expression levels were remarkably related to survival rates of RCC patients (C, E, F).