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:
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F2:20210 G/A;
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F5:1691 G/A;
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F7:10976 G/A;
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F13A1
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FGB:-455 G/A;
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ITGA2:807 C/T;
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ITGB3:1565 T/C;
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PAI-1:-675 5G/4G,
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MTR:2756 A/G;
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MTRR:66 A/G;
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MTHFR:677 С/T
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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.