Genetic Polymorphism of Matrix Metalloproteinase-9 and Susceptibility to Myocardial Infarction: A Meta-Analysis

Table 1

Baseline characteristics of eligible literatures.

Author	Year	Country	Journal name/; publication origin	Genotyping methods	SNP loci ()	Sample size	Control	Sample
Chen	2005	China	Chin J Arterioscler	PCR-RFLP	rs3918242 ()	78 (, )	81 (, )	Blood
Meng	2006	China	Tianjin Med J	PCR	rs3918242 ()	59 (, )	99 (, )	Blood
Nuzzo	2006	Sicily	Ann N Y Acad Sci	PCR	rs3918242 ()	115 (, )	123 (, )	Blood
Wang	2007	China	Journal of Clinical Hematology	PCR-RFLP	rs3918242 ()	37 (, )	84 (, )	Blood
Horne	2007	America	Am Heart J.	TaqMan	rs3918242 ()	1693	3455	Blood
Koh	2008	South Korea	International Journal of Cardiology	PCR-RFLP	rs3918242 ()	206	173	Blood
Ma	2010	China	Chin J Hypertens	PCR-SphI	rs3918242 ()	362 (, )	419 (, )	Blood
J.M.	2016	Mexico	Genetics and Molecular Research	PCR-RFLP	rs3918242 ()	236 (, )	285 (, )	Blood
EI-Aziz	2017	Egypt	International Journal of Cardiology	PCR-RFLP	rs3918242 ()	184 (, )	180 (, )	Whole blood
Abdolreza Daraei	2017	Iran	Genetic Testing and Molecular Biomarkers	PCR-RFLP	rs3918242 ()	117 (, )	120 (, )	Whole blood

SNP = single nucleotide polymorphism; HWE = Hardy-Weinberg equilibrium;  =  value of Hardy-Weinberg equilibrium test in controls for each locus; PCR = polymerase chain reaction.