Summary
The deletion/deletion (D/D) genotype of the angiotensin converting enzyme (ACE) has
been purported to be a risk for postoperative thrombosis. This D/D genotype has not
been evaluated as a risk factor for idiopathic venous thromboembolism (VTE).
The primary objective of the present study was to determine whether the D/D genotype
of ACE is independently associated with the occurrence of idiopathic venous thromboembolic
disease.
We prospectively enrolled consecutive patients with at least one objectively confirmed
idiopathic VTE. Friends of cases were recruited as controls and matched to cases by
sex, ethnicity, and age. Patients were tested for the ACE I/D polymorphism in addition
to factor V Leiden, prothrombin G20210A, and factor VIII levels.
Three hundred cases and 300 controls were enrolled; 97% were Caucasian. There were
148 females and 152 males in each group with a mean age of 56.21 years (SD=15.33).
The ACE D/D genotype was present in 25.3% of cases and 32.4% of controls for an adjusted
odds ratio of 0.66 (95% CI = 0.433 to 0.997). We can conclude that the ACE D/D genotype
is protective against idiopathic venous thromboembolism.
Keywords
ACE - angiotensin converting enzyme - venous thromboembolism - deep vein thrombosis
- pulmonary embolism