Abstract
Objectives: The objective is to evaluate whether danaparoid is effective in improving the live birth rate in patients with obstetric antiphospholipid syndrome (oAPS).
Methods: This prospective study included 91 pregnancies of 60 patients with oAPS diagnosed according to criteria of the International Congress on APS. Live birth rates, adverse pregnancies and perinatal outcomes were compared among patients treated with danaparoid and low dose aspirin (danaparoid group, LDA), unfractionated heparin (UFH) and LDA (UFH group) and LDA and/or prednisolone (LDA group).
Results: After excluding 11 miscarriages with abnormal embryonic chromosomes, one chemical pregnancy and one ectopic pregnancy, live birth rates were 87.5% (14/16) for the danaparoid group, 90.0% (36/40) for the UFH group and 63.6% (14/22) for the LDA group, respectively. The live birth rates of patients treated with danaparoid and UFH were similar and tended to be higher than that of patients treated with LDA, respectively (OR 4.0, 95% confidence interval 0.72–22.22 and 5.15, 1.33–20.00). No patient given danaparoid and one patient with UFH developed heparin-induced thrombocytopenia which resulted in a stillbirth. Another patient with UFH suffered a lumbar compression fracture.
Conclusion: Danaparoid is effective for improving the live birth rate and is safe for patients with oAPS.
Conflict of interest
Mayumi Sugiura-Ogasawara received payment for lectures from Fuji Pharma Co., Ltd., ILJapan Co., Ltd., Ferring Pharmaceuticals Co., Ltd., Merck Serono Co., Ltd., AstraZeneca Co., Ltd., Astellas Pharma Inc., Kaken Pharmaceutical Co. Ltd., Kissei Pharmaceutical Co., Aska Pharmaceutical Co. Ltd., Sekisui Medical Co. Ltd., Siemens Japan. All other authors have declared no conflicts of interest.