“…Thus, most studies reported no association between PrCa and MMP-1 in terms of the expression [ 31 , 48 , 52 , 68 , 74 , 83 ], activation [ 29 ] or polymorphism [ 28 , 44 , 60 , 63 , 64 , 68 , 74 , 81 , 88 , 90 , 110 , 155 ]. However, other studies have reported associations between expression and PrCa [ 46 ], including grade/stage [ 105 , 139 ] and metastatic properties, with MMP-1 ablation shown to reduce invasion [ 154 ]. Similarly, MMP-13 expression has typically not been associated with PrCa [ 31 , 48 , 84 , 91 , 95 ], but some studies do provide evidence of this [ 50 , 52 , 70 ].…”