alexa Detection of factor V leiden and prothrombin gene mutations in patients who died with thrombotic events.
Haematology

Haematology

Journal of Blood Disorders & Transfusion

Author(s): Ranguelov RD, Rosenthal N, Bromley C, Vasef MA

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Abstract CONTEXT: Individuals with factor V or prothrombin gene mutations are at increased risk for thrombotic events. Furthermore, the risk of recurrent deep venous thrombosis in heterozygous carriers of both factor V Leiden and prothrombin gene mutations is high enough that some investigators suggest lifelong warfarin prophylaxis for these individuals, even with a single spontaneous thrombotic event. OBJECTIVES: To assess the incidence of factor V Leiden and prothrombin gene mutations in an autopsy population and to determine if these tests can prove useful in identification of at-risk family members. DESIGN: We analyzed factor V Leiden and prothrombin gene mutations in 45 patients who died with or of thrombotic events, using archival tissue and multiplex allele-specific polymerase chain reaction amplification. The wild-type factor V gene was amplified in all 45 patients, whereas the wild-type prothrombin gene was amplified in 29 patients. RESULTS: Two patients (4.4\%) who died with thrombotic events at the ages of 35 and 92 years were heterozygous for factor V gene mutation. Two additional patients (6.7\%), who died with thrombotic events at the ages of 26 and 39 years, were heterozygous for prothrombin gene mutation. Patients homozygous for either factor V or prothrombin gene or simultaneously heterozygous for both genes were not detected in our study. CONCLUSIONS: Our findings suggest that screening the relatives of elderly patients who die with thrombotic events would not be cost-effective because of the low incidence of these mutations in the autopsy population. However, because the incidence of these mutations appeared significantly more frequently among individuals who died at 39 years or younger, testing the relatives of this subset of patients may prove useful for detection of at-risk individuals who would benefit from preventive anticoagulation therapy. This article was published in Arch Pathol Lab Med and referenced in Journal of Blood Disorders & Transfusion

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