VWF and lung carcinoma: In the current study, we established the profile of circRNAs in KSHV-infected EA.hy926 cell line, which was generated by fusing primary human umbilical vein endothelial cells with a thioguanine-resistant clone of A549 (a human lung carcinoma cell line) in the presence of polyethylene glycol (PEG), and the hybrid clones were subsequently selected in hypoxanthine-aminopterin-thymidine (HAT) medium and screened for factor VIII-related antigen.