QRT-PCR showed that the expression of circ_0006332 positively correlated with the expression of MYBL2 in both bladder cancer tissues and 6 cell lines including 5637, T24, J82, UM-UC-3, TSCCUP and SV-HUC-1 (Figure 4A and 4B). The gene discussed is MYBL2; the disease is urinary bladder carcinoma.