Abstract
Mutations in the MYBPC3 gene are currently believed to lead to the development of hypertrophic cardiomyopathy (HCM) in the majority of genetically determined cases. However, despite many years of research, both in worldwide and in Russia in particular, the genetic landscape of HCM is still insufficiently studied. Moreover, the insufficient study of genetically determined cases of HCM in the Russian population does not allow us to study the possible relation of the phenotypic characteristics of HCM patients with certain pathogenic variants of the genome of these patients. In this regard, the purpose of our work was to study the prevalence of rare pathogenic variants rs730880711 and rs397515974 of the MYBPC3 gene in HCM patients from Russia and to assess the effect of these mutations on the severity of this disease. The sample included 180 patients with moderate HCM and 137 patients with severe HCM. Analysis of the genotypes of rs730880711 (NC_000011.10:g.47342928_47342929insG; V453X) and rs397515974 (NC_000011.10:g.47337452G>C; Y847X) variants in the MYBPC3 gene was carried out in genomic DNA samples isolated from peripheral blood by real-time PCR. The performed analysis of the prevalence of rare pathogenic variants rs730880711 and rs397515974 in the MYBPC3 gene in patients with moderate and severe forms of HCM from Russia showed that the frequency of each mutation was 0.003. Both pathogenic variants were identified in individuals with the moderate disease. Thus, the indicated mutations are extremely rare in HCM patients from Russia and do not make a significant contribution to the development of this disease in the Russian population.
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This work was supported by the Russian Science Foundation, project no. 22-15-00243.
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Written informed consent to participate in the study was obtained from all patients and their family members in accordance with the Helsinki Declaration. The study was approved by the Ethics Committee of the Pirogov Russian National Research Medical University, protocol no. 139 dated November 10, 2014. Written informed consent to publish results of the study was obtained from all participating patients and their family members.
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Klass, A.L., Krylova, N.S., Lysenko, A.V. et al. Rare Mutations V453X and Y847X in the MYBPC3 Gene Do Not Lead to a Severe Form of Hypertrophic Cardiomyopathy in the Russian Population. Mol. Genet. Microbiol. Virol. 38, 222–225 (2023). https://doi.org/10.3103/S0891416823040043
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DOI: https://doi.org/10.3103/S0891416823040043