Molecular Genetic Analysis of Russian Patients with Coagulation Factor FVII Deficiency

Overview

Journal Genes (Basel)

Publisher MDPI

Date 2023 Sep 28

PMID 37761907

Authors

Olesya Pshenichnikova

Daria Selivanova

Ekaterina Shchemeleva

Tatiana Abramova

Nadezhda Zozulya

Vadim Surin

Affiliations

Soon will be listed here.

Abstract

Coagulation factor VII (proconvertin) is one of the proteins starting the blood coagulation cascade. Plasma FVII concentration is regulated by different factors. A low level of FVII could also be a result of FVII deficiency (MIM# 227500), the rare autosomal recessive inherited disease caused by pathogenic variants in the gene. The aim of this study was to describe a mutation spectrum of the gene and genotype-phenotype relationship in patients with FVII deficiency in Russia for the first time. We studied the primary structure of the gene of 54 unrelated patients with FVII deficiency by direct Sanger sequencing. Pathogenic variants in the gene were detected in 37 (68.5%) of them. We identified 24 different mutations located mostly in the serine protease domain. Five pathogenic variants had never been reported before. A major mutation in the Russian population was c.1391delC (p. Pro464Hisfs*32), linked with rs36209567 and rs6046 functional polymorphisms, that is widely distributed in East Europe. As in other countries, the genotypes poorly correlated with the severity of clinical manifestations but were quite well associated with FVII levels. Minor alleles of functional polymorphisms rs510335, rs5742910, rs561241, rs36209567, and rs6046 could also participate in the genotype and influence FVII levels.

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