circRNAs act as an oncogene in a variety of tumors, we measured the expression level of circRNA-UBAP2 in ovarian cancer tissues and cell lines by RT-qPCR assay, the results showed that expression level of circRNA-UBAP2 was significant higher in ovarian cancer tissues than that in adjacent tissues (Fig. 1a). The gene discussed is UBAP2; the disease is ovarian cancer.