SLC9A3 and lung carcinoma: Given their elevated levels in peripheral blood, the discrimination capability of exosomal SLC9A3-AS1 and PCAT6 is further assessed by ROC curve analysis, revealing that the AUC of them is 0.760 and 0.705 respectively and the combination of them provides a better diagnostic efficiency with an AUC of 0.811, implicating that they are likely to be used as promising biomarkers for lung cancer diagnosis.