A summary of differentially expressed, circulating lncRNAs is shown in Table 2, and a detailed discussion of several potential biomarkers, including HULC (highly upregulated in liver cancer), MALAT1 (metastasis-associated lung adenocarcinoma transcript 1), and UCA1 (urothelial-associated carcinoma 1), is presented below. Here, HULC is linked to liver cancer.