background: matrix metalloproteinase-9 (mmp-9) gene -1562c/t polymorphism could regulate its expression level and thus affected people’s predisposition to essential hypertension. however, related studies yielded inconsistent or contradictory results. methods: to evaluate the association of mmp-9 -1562c/t polymorphism with essential hypertension, we performed a meta-analysis by combining all ava...
