<p><strong>Background. </strong>In some patients, the metabolism of clopidogrel is altered because of the presence of polymorphic variants rs4244285 (* 2), rs4986893 (* 3) and rs12248560 (* 17) in the <em>CYP2C19 </em>gene. There is also evidence of decreased efficacy of clopidogrel in individuals with the T/T genotype in the variant rs2305948 of the <em>VEGFR-2 </em>gene. Nevertheless, this medication is used widely in Russia due to the availability of generic anticoagulants.</p><p><strong>Aim. </strong>To assess the prevalence of the following polymorphic variants of <em>CYP2C19</em>: rs4244285 (* 2), rs4986893 (* 3) and rs12248560 (* 17); assess the prevalence of the rs2305948 variant of <em>VEGFR-2</em>, and determine cardiovascular risk factors in patients of Buryat nationality.</p><p><strong>Methods. </strong>The study included 113 patients of Buryat nationality who underwent coronary stent placement due to acute coronary syndrome. Patients were stratified by the presence of the following alleles: <em>CYP2C19 </em>* 2, *3, *17 and <em>VEGFR-2 </em>rs2305948. The following laboratory parameters were measured for all patients: blood glucose, lipid spectrum, creatinine, and glomerular filtration rate. The severity of coronary atherosclerosis was evaluated.</p><p><strong>Results. </strong>The frequencies of the alleles and halotypes (<em>CYP2C19 </em>* 2, * 3 and *17) were determined. An association between the carriage of the C/C genotype in rs2305948 and a <60 ml/min/1.73 m<!-- x-tinymce/html --><sup>2</sup> decrease in glomerular filtration rate (χ<!-- x-tinymce/html --><sup>2</sup> = 4.185, p = 0.032) were found. Additionally, the C/C genotype in rs2305948 was associated with higher blood pressure (χ<!-- x-tinymce/html --><sup>2</sup> = 12.593, p = 0.001). For men, we identified a positive correlation between the rs2305948 C/C allele and the number of significant coronary stenoses (R = 0.227, p < 0.05).</p><p><strong>Conclusion. </strong>Among Buryat patients with acute coronary syndrome and percutaneous coronary intervention, the CYP2C19*2,*3 polymorphic variants were associated with a 46.0% decrease in the metabolic rate for clopidogrel. Furthermore, we identified several associations between the C/C genotype in the rs2305948 variant of VEGFR-2 with a number of cardiovascular risk factors.</p><p>Received 2 September 2019. Revised 24 October 2019. Accepted 30 October 2019.</p><p><strong>Funding: </strong>The study did not have sponsorship.</p><p><strong>Conflict of interest: </strong>Authors declare no conflict of interest.</p><p><strong>Author contributions</strong><strong></strong></p><p>Conception and study design: V.D. Altayev, K.V. Protasov, G.I. Lifshits</p><p>Data collection and analysis: Е.М. Zelenskaya, K.Y. Nikolaev, O.S. Donirova, V.D. Altayev, K.V. Protasov, E.N. Voronina, G.I. Lifshits</p><p>Drafting the article: Е.М. Zelenskaya</p><p>Critical revision of the article: Е.М. Zelenskaya</p><p>Final approval of the version to be published: Е.М. Zelenskaya, K.Y. Nikolaev, O.S. Donirova, V.D. Altayev, K.V. Protasov, E.N. Voronina, G.I. Lifshits</p>