<qa>  What is the clinical practice of LMWH therapy without the proved evidence in women without throSince novel inherited and acquired prothrombotic abnormalities are currently under investigation, clinicians often address the question of prophylaxis in women with RPL who do not have a specific thrombophilic defect. The encouraging results presented above let rise the clinical practise of LMWH therapy without the proved evidence in women without thrombophilic disorders. To give the basis for a rational therapy this question should be answered by this prospective randomized trial. 