The expression levels of five p53-regulated lncRNAs (PR-lncRNA-1, PR-lncRNA-2, PR-lncRNA-10, PR-lncRNA-17 and PR-lncRNA-18) showed a statistically significant classificatory value (area under the curve (AUC)<0.7) that distinguished tumour from normal tissue (Fig. 7b). The gene discussed is TP53; the disease is neoplasm.