RESUMO
<p><b>OBJECTIVE</b>To assess the association of a disintegrin and metallo-proteinase with thrombospondin type 1 motifs (ADAMTS-1) gene polymorphism and ischemic stroke caused by large artery atherosclerosis (LAA).</p><p><b>METHODS</b>In total 767 patients and 506 controls were recruited. Single nucleotide polymorphisms (SNPs) rs416905 (T/C) and rs402007 (G/C) of the ADAMTS-1 gene were genotyped by polymerase chain reaction and DNA sequencing.</p><p><b>RESULTS</b>Frequencies of the rs402007 GC+CC genotype and the C allele were significantly different between the two groups (68.84% vs. 60.67%, χ2=9.012, P=0.003, OR=1.432; 45.24% vs. 38.54%, χ2=11.208, P=0.001, OR=1.318). Binary logistic regression has confirmed that the above difference was significant (P=0.001, OR=1.521, 95%CI: 1.183-1.955). The frequencies of TC+CC and GC+CC genotypes were similar between the two groups, and so was it with the C allele. The two SNPs had been in complete linkage disequilibrium (D'=1.0, r2=1.0).</p><p><b>CONCLUSION</b>The rs416905 and rs402007 polymorphisms of the ADAMTS-1 gene may be associated with ischemic stroke caused by LAA. The C allele of the rs402007 locus may be a susceptibility factor for this subtype of stroke.</p>