LINC00632 and hepatocellular carcinoma: A circRNA discovered in human named Cdr1as (antisense to the cerebellar degeneration-related protein 1 transcript), which also termed as ciRS-7 (circular RNA sponge for miR-7) aberrantly expressed in several cancers, including colorectal cancer [31], hepatocellular carcinoma [32], and gastric cancer [20], but these study did not have completed data for a meta analysis.