PVT1 and hepatocellular carcinoma: As indicated in Figure 4A, 1297 patients from 11 studies examined the association between tumor size and PVT1 expression in different types of cancers, including lung cancer (n = 4), gastric cancer (n = 2), hepatocellular carcinoma (n = 2), colorectal cancer (n = 1), pancreatic cancer (n = 1) and bladder cancer (n = 1).