TY  - JOUR
AU  - Pruner, Iva
AU  - Farm, Maria
AU  - Tomić, Branko
AU  - Gvozdenov, Maja
AU  - Kovač, Mirjana
AU  - Miljić, Predrag
AU  - Soutari, Nida Mahmoud Hourani
AU  - Antović, Aleksandra
AU  - Radojković, Dragica
AU  - Antović, Jovan P.
AU  - Đorđević, Valentina
PY  - 2020
UR  - https://imagine.imgge.bg.ac.rs/handle/123456789/1375
AB  - BACKGROUND: Thrombosis is a major global disease burden with almost 60% of cases related to underlying heredity and most cases still idiopathic. Synonymous single nucleotide polymorphisms (sSNPs) are considered silent and phenotypically neutral. Our previous study revealed a novel synonymous FII c.1824C gt  T variant as a potential risk factor for pregnancy loss, but it has not yet been associated with thrombotic diseases. METHODS: To determine the frequency of the FII c.1824C gt  T variant we have sequenced patients' DNA. Prothrombin RNA expression was measured by quantitative PCR. Functional analyses included routine hemostasis tests, western blotting and ELISA to determine prothrombin levels in plasma, and global hemostasis assays for thrombin and fibrin generation in carriers of the FII c.1824C gt  T variant. Scanning electron mi- croscopy was used to examine the structure of fibrin clots. RESULTS: Frequency of the FII c.1824C gt  T variant was significantly increased in patients with venous thromboembolism and cerebrovascular insult. Examination in vitro demonstrated increased expression of prothrombin mRNA in FII c.1824C gt  T transfected cells. Our ex vivo study of FII c.1824C gt  T carriers showed that the presence of this variant was associated with hyperprothrom-binemia, hypofibrinolysis, and formation of densely packed fibrin clots resistant to fibrinolysis. CONCLUSION: Our data indicate that FII c.1824C gt  T, although a synonymous variant, leads to the development of a prothrombotic phenotype and could represent a new prothrombotic risk factor. As a silent variant, FII c.1824C gt  T would probably be overlooked during genetic screening, and our results show that it could not be detected in routine laboratory tests.
PB  - Oxford Univ Press Inc, Cary
T2  - Clinical Chemistry
T1  - The Silence Speaks, but We Do Not Listen: Synonymous c.1824C  gt  T Gene Variant in the Last Exon of the Prothrombin Gene as a New Prothrombotic Risk Factor
EP  - 389
IS  - 2
SP  - 379
VL  - 66
DO  - 10.1093/clinchem/hvz015
ER  - 

@article{
author = "Pruner, Iva and Farm, Maria and Tomić, Branko and Gvozdenov, Maja and Kovač, Mirjana and Miljić, Predrag and Soutari, Nida Mahmoud Hourani and Antović, Aleksandra and Radojković, Dragica and Antović, Jovan P. and Đorđević, Valentina",
year = "2020",
abstract = "BACKGROUND: Thrombosis is a major global disease burden with almost 60% of cases related to underlying heredity and most cases still idiopathic. Synonymous single nucleotide polymorphisms (sSNPs) are considered silent and phenotypically neutral. Our previous study revealed a novel synonymous FII c.1824C gt  T variant as a potential risk factor for pregnancy loss, but it has not yet been associated with thrombotic diseases. METHODS: To determine the frequency of the FII c.1824C gt  T variant we have sequenced patients' DNA. Prothrombin RNA expression was measured by quantitative PCR. Functional analyses included routine hemostasis tests, western blotting and ELISA to determine prothrombin levels in plasma, and global hemostasis assays for thrombin and fibrin generation in carriers of the FII c.1824C gt  T variant. Scanning electron mi- croscopy was used to examine the structure of fibrin clots. RESULTS: Frequency of the FII c.1824C gt  T variant was significantly increased in patients with venous thromboembolism and cerebrovascular insult. Examination in vitro demonstrated increased expression of prothrombin mRNA in FII c.1824C gt  T transfected cells. Our ex vivo study of FII c.1824C gt  T carriers showed that the presence of this variant was associated with hyperprothrom-binemia, hypofibrinolysis, and formation of densely packed fibrin clots resistant to fibrinolysis. CONCLUSION: Our data indicate that FII c.1824C gt  T, although a synonymous variant, leads to the development of a prothrombotic phenotype and could represent a new prothrombotic risk factor. As a silent variant, FII c.1824C gt  T would probably be overlooked during genetic screening, and our results show that it could not be detected in routine laboratory tests.",
publisher = "Oxford Univ Press Inc, Cary",
journal = "Clinical Chemistry",
title = "The Silence Speaks, but We Do Not Listen: Synonymous c.1824C  gt  T Gene Variant in the Last Exon of the Prothrombin Gene as a New Prothrombotic Risk Factor",
pages = "389-379",
number = "2",
volume = "66",
doi = "10.1093/clinchem/hvz015"
}

Pruner, I., Farm, M., Tomić, B., Gvozdenov, M., Kovač, M., Miljić, P., Soutari, N. M. H., Antović, A., Radojković, D., Antović, J. P.,& Đorđević, V.. (2020). The Silence Speaks, but We Do Not Listen: Synonymous c.1824C  gt  T Gene Variant in the Last Exon of the Prothrombin Gene as a New Prothrombotic Risk Factor. in Clinical Chemistry
Oxford Univ Press Inc, Cary., 66(2), 379-389.
https://doi.org/10.1093/clinchem/hvz015

Pruner I, Farm M, Tomić B, Gvozdenov M, Kovač M, Miljić P, Soutari NMH, Antović A, Radojković D, Antović JP, Đorđević V. The Silence Speaks, but We Do Not Listen: Synonymous c.1824C  gt  T Gene Variant in the Last Exon of the Prothrombin Gene as a New Prothrombotic Risk Factor. in Clinical Chemistry. 2020;66(2):379-389.
doi:10.1093/clinchem/hvz015 .

Pruner, Iva, Farm, Maria, Tomić, Branko, Gvozdenov, Maja, Kovač, Mirjana, Miljić, Predrag, Soutari, Nida Mahmoud Hourani, Antović, Aleksandra, Radojković, Dragica, Antović, Jovan P., Đorđević, Valentina, "The Silence Speaks, but We Do Not Listen: Synonymous c.1824C  gt  T Gene Variant in the Last Exon of the Prothrombin Gene as a New Prothrombotic Risk Factor" in Clinical Chemistry, 66, no. 2 (2020):379-389,
https://doi.org/10.1093/clinchem/hvz015 . .