Higher incidence of death in multi-vessel coronary artery disease patients associated with polymorphisms in chromosome 9p21

BMC Cardiovascular Disorders

Research Article

Paulo Caleb Junior Lima Santos¹  Whady Armindo Hueb¹  Alexandre Costa Pereira¹  Luciana Gioli-Pereira¹  Jose Eduardo Krieger¹  Noely Evangelista Ferreira¹ 

[1] Laboratory of Genetics and Molecular Cardiology, Heart Institute (InCor), Sao Paulo University Medical School, Av. Dr. Enéas de Carvalho Aguiar, 44 Cerqueira César, Sao Paulo, SP, Brazil;

关键词: Coronary artery disease;    Polymorphism;    Genetics;    Chromosome 9p21;   

DOI  :  10.1186/1471-2261-12-61

 received in 2011-11-14, accepted in 2012-07-16,  发布年份 2012

来源: Springer

【 摘 要 】

BackgroundWe investigated whether 9p21 polymorphisms are associated with cardiovascular events in a group of 611 patients enrolled in the Medical, Angioplasty or Surgery Study II (MASS II), a randomized trial comparing treatments for patients with coronary artery disease (CAD) and preserved left ventricular function.MethodsThe participants of the MASS II were genotyped for 9p21 polymorphisms (rs10757274, rs2383206, rs10757278 and rs1333049). Survival curves were calculated with the Kaplan–Meier method and compared with the log-rank statistic. We assessed the relationship between baseline variables and the composite end-point of death, death from cardiac causes and myocardial infarction using a Cox proportional hazards survival model.ResultsWe observed significant differences between patients within each polymorphism genotype group for baseline characteristics. The frequency of diabetes was lower in patients carrying GG genotype for rs10757274, rs2383206 and rs10757278 (29.4%, 32.8%, 32.0%) compared to patients carrying AA or AG genotypes (49.1% and 39.2%, p = 0.01; 52.4% and 40.1%, p = 0.01; 47.8% and 37.9%, p = 0.04; respectively).Significant differences in genotype frequencies between double and triple vessel disease patients were observed for the rs10757274, rs10757278 and rs1333049. Finally, there was a higher incidence of overall mortality in patients with the GG genotype for rs2383206 compared to patients with AA and AG genotypes (19.5%, 11.9%, 11.0%, respectively; p = 0.04). Moreover, the rs2383206 was still significantly associated with a 1.75-fold increased risk of overall mortality (p = 0.02) even after adjustment of a Cox multivariate model for age, previous myocardial infarction, diabetes, smoking and type of coronary anatomy.ConclusionsOur data are in accordance to previous evidence that chromosome 9p21 genetic variation may constitute a genetic modulator in the cardiovascular system in different scenarios. In patients with established CAD, we observed an association between the rs2383206 and higher incidence of overall mortality and death from cardiac causes in patients with multi-vessel CAD.

【 授权许可】

CC BY   
© Gioli-Pereira et al.; licensee BioMed Central Ltd. 2012