Association of Genetic Polymorphisms with Complications of Implanted LVAD Devices in Patients with Congestive Heart Failure: A Kazakhstani Study.

The left ventricular assist device (LVAD) is one of the alternative treatments for heart failure (HF) patients. However, LVAD support is followed by thrombosis, and bleeding complications which are caused by high non-physiologic shear stress and antithrombotic/anticoagulant therapy. A high risk of complications occurs in the presence of the genotype polymorphisms which are involved in the coagulation system, hemostasis function and in the metabolism of the therapy. The aim of the study was to investigate the influence of single-nucleotide polymorphisms (SNP) in HF patients with LVAD complications. We analyzed 21 SNPs in HF patients ( n = 98) with/without complications, and healthy controls ( n = 95). SNPs rs9934438; rs9923231 in VKORC1 , rs5918 in ITGB3 and rs2070959 in UGT1A6 demonstrated significant association with HF patients' complications (OR (95% CI): 3.96 (1.42-11.02), p = 0.0057), (OR (95% CI): 3.55 (1.28-9.86), p = 0.011), (OR (95% CI): 5.37 (1.79-16.16), p = 0.0056) and OR (95% CI): 4.40 (1.06-18.20), p = 0.044]. Genotype polymorphisms could help to predict complications at pre- and post-LVAD implantation period, which will reduce mortality rate. Our research showed that patients can receive treatment with warfarin and aspirin with a personalized dosage and LVAD complications can be predicted by reference to their genotype polymorphisms in VKORC1 , ITGB3 and UGT1A6 genes.