The present study reports for the first time on the presence of antica
rdiolipin antibodies (aCL) in a population of 259 women with a history
of recurrent abortion, intrauterine death, and/or neonatal death asso
ciated with fetal growth restriction, preeclampsia and abruptio placen
tae. The overall incidence of aCL in this study group was 20.5%, a sta
tistically significant increase in comparison with a control group. Th
e highest positive rate was observed among women who presented both re
current abortion and intrauterine death (33.3%), the lowest was observ
ed among women with a history of neonatal death. Our findings confirm
that aCL are strongly linked with fetal loss. Thus, before planning a
subsequent pregnancy, the presence of aCL should be tested in all wome
n with poor pregnancy outcome.