Similarly, the ACOG does not recommend screening for hereditary thrombophilia in women who have obstetric complications, including REM, placental abruption, IUGR, or PE, because it is unclear whether anticoagulation reduces the recurrence of these events.4 In this study, the rates of PE and preterm births in patients with DVT and negative aPL results were 5.3% and 11.3%, which were similar to those of the Brazilian general population,7 and the mean birth weight was 3.225 g (± 565). This evidence concerns the gene FASLG and placental abruption.