-OAPS patients had a significantly higher risk for stillbirths compared to the NC-OAPS patients, while the NC-OAPS group had a significantly higher risk for preterm birth and overall APOs.-Double aPL positivity, triple aPL positivity, and gestational hypertension were the independent risk factors for APOs in OAPS patients.-Two of the double aPL positivity subtypes, triple aPL positivity and placenta previa were independent risk factors for APOs in NC-OAPS patients. This evidence concerns the gene FASLG and placenta praevia.