PTEN and urinary bladder carcinoma: The BTG2 expressions were decreased by PTEN knockdown in bladder cancer cells as RT4_shPTEN cells (RT4 cells with PTEN knockdown) exhibited lower BTG2 mRNA expression than RT4_shCtrl cells (RT4 cells with mock knockdown) (Fig. 4B); while T24‐PTEN cells (T24 cells with PTEN overexpression) presented higher BTG2 mRNA expression than T24‐DNA cells (T24 cells with mock overexpression) (Fig. 4C).