Figure 4. LncRNAs play a diagnostic role in patients with clear cell renal cell carcinoma. (A–J) ROC curve analysis was performed to differentiate kidney cancer patients from healthy individuals, according to lncRNA expression. (K–R) Diagnostic accuracy was improved after combing AP000439.2 with previously reported RCC biomarkers. lncRNAs, long non-coding RNAs; ROC, receiver operating characteristic curve; RCC, renal cell carcinoma.