In this study, we used amultiomics strategy to investigate thepotential of PCNA as a prognostic biomarker using pan-cancer analysis.PCNA mRNA expression was elevated in 21 of the 22 cancer types representedin the TNM plot (Figure a), consisting of bladder, breast, colon, lung, ovary, rectum, stomach,and testis. Here, PCNA is linked to cancer.