Thrombophilia natural history, complications and prognosis

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Asiri Ediriwickrema, M.D., M.H.S. [2]

Overview

The annual thrombotic risks are variable and depend on the underlying thrombophilia.[1]

Natural History

Complications

The risk of future thrombosis in patients with thrombophilia:

Thrombophilic state Thrombotic risk[2]
Trauma/General surgery Modest
Age > 60 Modest
Immobilization Modest
Pregnancy Modest
Hormone therapies Modest
Factor V Leiden heterozygosity Modest
Prothrombin mutation Modest
Homocysteinemia Modest
Increased factor VIII levels Modest
Increased factor IX levels Modest
Increased factor XI levels Modest
Protein C and S deficiency Intermediate
Dysfibrogenemia Intermediate
Malignancy High
APLS/Lupus anticoagulant High
Myeloproliferative disorders/hyperviscosity High
PNH High
Orthopedic surgery High
Antithrombin deficiency High
Factor V Leiden homozygosity High
Thrombotic risk[2] Thrombophilic state
Modest Trauma/General surgery, Age > 60, Immobilization, Pregnancy, Hormone therapies, Factor V Leiden heterozygosity, Prothrombin mutation, Homocysteinemia, Increased factor VIII levels, Increased factor IX levels, Increased factor XI levels
Intermediate Protein C and S deficiency, Dysfibrogenemia
High Malignancy, APLS/Lupus anticoagulant, Myeloproliferative disorders/hyperviscosity, PNH, Orthopedic surgery, Antithrombin deficiency, Factor V Leiden homozygosity

The effect of concurrent hormone exposure on incident thrombosis and thrombotic risk in patients with thrombophilia:

Thrombophilic state Annual Incidence (%) Relative Risk
Normal 0.008 1
Factor V Leiden heterozygous 0.06 3-10
Factor V Leiden homozygous 0.5-1 80
Prothrombin G20210A 0.02 1-5
Oral contraceptive (OCP) 0.03 4
OCP and factor V leiden heterozygous 0.3 35
OCP and factor V leiden homozygous 100
OCP and prothrombin G20210A 16
OCP and protein C/S, or antithrombin III deficiency 9.7
Pregnancy 7
Pregnancy and factor V leiden heterozygous 35
Cancer 5
History of venous thrombosis 50

Data were extracted from multiple sources.[1][2][7]

  • Deep venous thrombosis has two major complications: pulmonary embolism, which is acute and life-threatening, and postthrombotic syndrome (PTS) with chronic venous ulceration (CVU).

Prognosis

The prognosis depends on the underlying thrombophilia as each form has a different associated thrombotic risk. Patients who develop multiple or atypical clots, arterial thrombosis, or life-threatening thrombosis have worse prognosis.

Thrombophilias generally associated with worse prognosis include:

Certain thrombophilic conditions are high risk and require consideration for lifelong anticoagulation. In these cases, expert consultation is recommended.

Possible indications for lifelong/prophylactic anticoagulation
Antiphospholipid syndrome
Paroxysmal nocturnal hemoglobinuria
Recurrent thrombosis regardless of underlying thrombophilia
History of life-threatening thrombosis or atypical locations
Malignancy with history of thrombosis

References

  1. 1.0 1.1 Bauer KA (2001). "The thrombophilias: well-defined risk factors with uncertain therapeutic implications". Ann Intern Med. 135 (5): 367–73. PMID 11529700.
  2. 2.0 2.1 2.2 2.3 Bates SM, Ginsberg JS (2004). "Clinical practice. Treatment of deep-vein thrombosis". N Engl J Med. 351 (3): 268–77. doi:10.1056/NEJMcp031676. PMID 15254285.
  3. Linkins LA, Choi PT, Douketis JD (2003). "Clinical impact of bleeding in patients taking oral anticoagulant therapy for venous thromboembolism: a meta-analysis". Ann Intern Med. 139 (11): 893–900. PMID 14644891.
  4. 4.0 4.1 Christiansen SC, Cannegieter SC, Koster T, Vandenbroucke JP, Rosendaal FR (2005). "Thrombophilia, clinical factors, and recurrent venous thrombotic events". JAMA. 293 (19): 2352–61. doi:10.1001/jama.293.19.2352. PMID 15900005. Review in: Evid Based Med. 2006 Apr;11(2):59
  5. Baglin T, Luddington R, Brown K, Baglin C (2003). "Incidence of recurrent venous thromboembolism in relation to clinical and thrombophilic risk factors: prospective cohort study". Lancet. 362 (9383): 523–6. doi:10.1016/S0140-6736(03)14111-6. PMID 12932383.
  6. De Stefano V, Simioni P, Rossi E, Tormene D, Za T, Pagnan A; et al. (2006). "The risk of recurrent venous thromboembolism in patients with inherited deficiency of natural anticoagulants antithrombin, protein C and protein S." Haematologica. 91 (5): 695–8. PMID 16670075.
  7. 7.0 7.1 Dalen JE (2008). "Should patients with venous thromboembolism be screened for thrombophilia?". Am J Med. 121 (6): 458–63. doi:10.1016/j.amjmed.2007.10.042. PMID 18501222.

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