Background Dysregulated circular RNAs have been implicated in the pathogenesis of
cancer. Recent studies indicate that has_circ_0001649 lowly expressed in multiple types of
cancer. The purpose of this study is to investigate the roles of has_circ_0001649 as a
diagnostic and prognostic marker for Chinese patients with cancer. Methods Adhering to
preferred reporting items for systematic reviews and meta-analyses guidelines, systematic
literature searches were performed using Pubmed, Embase, and the web of Science to …