Back

Genetic risk of trombophilia (F2:20210 G/A; F5:1691 G/A; F7:10976 G/A; F13А1:c.103 G/T; FGB:-455 G/A; ITGA2:807 C/T; ITGB3:1565 T/C; PAI-1:-675 5G/4G, MTR:2756 A/G; MTRR:66 A/G; MTHFR:677 С/T и MTHFR:1298 А/C (11 genes))

The analysis includes simultaneous determination of changes in the main 10 genes (11 alleles) affecting blood clotting:

  • F2:20210 G/A;

  • F5:1691 G/A;

  • F7:10976 G/A;

  • F13A1

     
    .103 G/T;

     

  • FGB:-455 G/A;

  • ITGA2:807 C/T;

  • ITGB3:1565 T/C;

  • PAI-1:-675 5G/4G,

  • MTR:2756 A/G;

  • MTRR:66 A/G;

  • MTHFR:677 С/T

  • MTHFR:1298 A/C

The result of this complex test should be interpreted by the attending physician taking into account the medical history, results of other genetic analysis, clinical manifestations and laboratory data. A different combination of mutations in the alleles of these genes affects the state of the blood. Thus, the combination of the c.103 G/T polymorphism (replacement of guanine with thymine at the 103 position) of the fibrinase gene F13A1 in homo- and heterozygous states increase the risks of bleeding. In the presence of risk alleles in the F5 (F5 polymorphism 1691 G/A) and F2 (F2 polymorphism 20210 G/A) genes, it partially compensates for the increased risks of thrombotic complications and risks of complications in the course of pregnancy. At the same time, the combination of polymorphism 10976 G/A of the F7 gene in the homo- and heterozygous state increases the risk of bleeding. In the presence of risk alleles in the F5 (F5 polymorphism 1691 G/A) and F2 (F2 polymorphism 20210 G/A) genes, it partially compensates for the increased risks of thrombotic complications and risks of complications in the course of pregnancy. And the presence of the risk allele of polymorphism 20210 G/A of the F2 gene further increases the risks of thrombosis and thromboembolism. In combination with the presence of polymorphisms 10976 G/A of the F7 gene and c.103 G/T of the fibrinase gene F13A1, the risks of thrombotic complications are reduced but remain higher than the population average.

If available:

  • Hyperhomocysteinemia,
  • Cardiovascular diseases (ischemic heart disease, ischemic stroke, arterial hypertension, atherosclerosis, thrombosis),
  • Preeclampsia,
  • Thromboembolic complications during pregnancy,
  • Habitual miscarriage of pregnancy,
  • Congenital malformations of the fetus (isolated defects of the neural tube in the fetus, cleft upper lip and palate), chromosomal abnormalities of the fetus,
  • Migraines, depression, insomnia, chronic fatigue syndrome, headaches, memory loss,
  • History of thrombosis and thromboembolism,
  • History of ischemic stroke,
  • Taking oral contraceptives and hormone replacement therapy.

The F2 gene (G20210A)

  • The G/G genotype is not associated with the risk of developing diseases.
  • G/A is a genotype predisposing to increased blood clotting, in a heterozygous form.
  • A/A is a genotype predisposing to increased blood clotting, in a homozygous form.

The F5 gene(G1691A)

  • The G/G genotype is not associated with the risk of developing diseases.
  • G/A is a genotype predisposing to increased blood clotting, in a heterozygous form.
  • A/A is a genotype predisposing to increased blood clotting, in a homozygous form.

The F7 gene (G10976A)

  • The G/G genotype is not associated with a change in the activity of the F7 protein.
  • G/A is a genotype predisposing to a moderate decrease in the activity of the F7 protein.
  • A/A is a genotype predisposing to a significant decrease in the activity of the F7 protein.

The F13A1 (G103T) gene

  • The G/G genotype is not associated with a change in the activity of the F13 protein.
  • G/T is a genotype predisposing to a moderate decrease in the activity of the F13 protein.
  • T/T is a genotype predisposing to a significant decrease in the activity of the F13 protein.

ITGA2 gene(C807T)

  • The C/C genotype is not associated with a change in platelet adhesion rate.
  • C/T is a genotype predisposing to an increase in the rate of platelet adhesion, compared with the C/C genotype.
  • T/T is a genotype predisposing to an increase in the rate of platelet adhesion, compared with the C/C and C/T genotypes.

ITGB3 gene (T1565C)

  • The T/T genotype is not associated with a change in platelet aggregation capacity.
  • T/C is a genotype predisposing to a moderate increase in platelet aggregation capacity.
  • C/C is a genotype predisposing to high platelet aggregation capacity.

SERPINE1 gene(5G(-675)4G)

  • The 5G/5G genotype is not associated with a change in the level of plasminogen activator inhibitor – 1.
  • 5G/4G is a genotype predisposing to an intermediate level of plasminogen activator inhibitor – 1.
  • 4G/4G is a genotype predisposing to an increase in the level of plasminogen activator inhibitor – 1.

The MTHFR gene (1298 A/C):

  • The A/A genotype is not associated with a change in enzyme activity.
  • A/C is a genotype predisposing to a decrease in enzyme activity in combination with 677T and 1298C.
  • C/C is a genotype predisposing to a decrease in enzyme activity.

The MTHFR gene (C677T)

  • The C/C genotype is not associated with a change in enzyme activity.
  • C/T is a genotype predisposing to a decrease in enzyme activity in combination with 677T and 1298C.
  • T/T is a genotype predisposing to a decrease in enzyme activity.

The MTR gene(2756 A/G)

  • The A/A genotype is not associated with a change in enzyme activity.
  • A/G is a genotype predisposing to a decrease in enzyme activity in combination with 2756G and 66G (MTRR).
  • G/G is a genotype predisposing to a decrease in enzyme activity.

The MTRR gene (66 A/G)

  • The A/A genotype is not associated with a change in enzyme activity.
  • A/G is a genotype predisposing to a decrease in enzyme activity in combination with the heterozygous allele 66G and 2756G (MTR).
  • G/G is a genotype predisposing to a decrease in enzyme activity.