PGF and antiphospholipid syndrome: Eight variables were retained: maternal age; body mass index; the presence of systemic disease (defined as pregestational diabetes, chronic hypertension, a history of PE and/or FGR, antiphospholipid syndrome, and/or chronic kidney disease); conception via in vitro fertilization; gestational weight gain; a diagnosis of gestational diabetes; the sFlt-1/PlGF ratio in the third trimester; and diastolic blood pressure in the third trimester.