Over expression and premature activation of matrix metalloproteinase (MMP) can lead to degradation of amnion chorionic membrane which clinically called premature rupture of membrane (PROM). Increasing MMP activity caused by matrix metalloproteinase-9 (MMP-9) gene polymorphism (C-1562T) will be followed by apoptosis. This study was aimed to find the differences between MMP-9 expression and cerv…