Next, to investigate the clinical significance of KRT19 in different cancer patients, we conducted a computational analysis of overall survival (OS) probability, which has been associated with KRT19 expression in cancer patients based on various web programs, including PrognoScan (http://dna00.bio.kyutech.ac.jp/PrognoScan/) [26], Kaplan-Meier Plotter (KMplot) (www.kmplot.com) [27], and PROGgeneV2-Pan Cancer Prognostics Database (http://www.compbio.iupui.edu/proggene) [28]. The gene discussed is KRT19; the disease is polyarteritis nodosa.