[Low-molecular-weight heparins for cancer-associated thromboembolism: What place in 2019?]

According to international clinical practice guidelines, low-molecular-weight heparins are advocate for the treatment and the prevention of cancer associated thrombosis. Direct oral anticoagulants recently introduced represent an alternative to vitamin K antagonists and low-molecular-weight heparins since their use doesn't require coagulation monitoring or daily subcutaneous injections. Recent studies comparing direct oral anticoagulants and low-molecular-weight heparins have shown a trend towards a reduction of venous thromboembolism events of direct oral anticoagulants but an increased risk of major bleeding. Recent French inter-group recommendations on the treatment of venous thromboembolism in cancer patients, favor low molecular weight heparins over direct oral anticoagulants as curative agents. In the light of recent studies, the objective of this review is to re-evaluate the place of low-molecular-weight heparins in the management of patents with cancer-associated thrombosis and to focus on the recent updates of international guidelines.