Laboratory screening of thrombophilia. Evaluation of the diagnostic efficacy of a global test to detect congenital deficiencies of the protein C anticoagulant pathway

A. Tripodi, S. Akhavan, D. Asti, E. M. Faioni, P. M. Mannucci

Research output: Contribution to journalArticle

Abstract

Clinical laboratories are at present confronted with increasing demands for thrombophilia work-up, which may seriously overwhelm their capacity. Recently, methods able to investigate the protein C anticoagulant pathway globally have been proposed. In this study we investigated the reliability of one such method for its ability to detect patients with known defects of the pathway by testing plasmas from patients with the FVQ506 mutation, with congenital protein C, protein S or antithrombin deficiencies, and patients with previous history of thrombosis, but no identifiable defects. The results show that the new global test fulfils the requirements for congenital protein C deficiency and activated protein C resistance associated with the FVQ506 mutation, which account for more than half of the congenital defects found in thrombophilia. However, congenital protein S deficiency very often remains undetected by this test. Improvement of sensitivity toward this component of the protein C anticoagulant pathway would enroll the global test as a suitable candidate to explore the pathway. Since anti thrombin, which also remains undetected by this test, is an additional important risk factor for venous thrombosis, devoting time and effort to developing global tests able to detect defects in both the antithrombin and protein C pathways is warranted.

Original languageEnglish
Pages (from-to)485-489
Number of pages5
JournalBlood Coagulation and Fibrinolysis
Volume9
Issue number6
Publication statusPublished - 1998

Keywords

  • APC-resistance
  • Factor V Leiden
  • Protein C
  • Protein S
  • Screening test
  • Thrombophilia

ASJC Scopus subject areas

  • Hematology

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