Among all the included studies, Svatek et al. in 2010 detected plasma MMP concentrations (MMP1, 2, 3, 7, 8, 9, and 12) in 135 bladder cancer patients, reporting that high MMP7 levels were significantly associated with poor CSS rates (HR= 2.24, 95%CI= 1.12–4.47; P = 0.022). Here, MMP7 is linked to urinary bladder cancer.