TP73 and neoplasm: Moreover, after addition of tumor purity into the multivariate model, only PRPF19 (P = .005‐.04, c‐index = 0.71‐0.73) and TP73 (P = .02‐.04, c‐index = 0.71‐0.72) methylation were significantly associated with better OS and PFS (Data S2).