Hypoproliferative Thrombocytopenia Clinical Trial
Study on the Safety and Efficacy of Cryopreserved Platelets in Hypoproliferative Thrombocytopenic Patients
The purpose of this study is to study the safety and efficacy of pooled buffy-coat derived platelets which had been frozen with dimethyl sulphoxide (DMSO), in the prevention of bleeding for patients with hypoproliferaitve thrombocytopenia. These platelets are hereafter referred to as cryopreserved platelets. Patients who have severely low platelet count due to impaired bone marrow function from chemotherapy or certain haematological conditions may need platelet transfusion to prevent spontaneous bleeding. Currently, platelets are stored in liquid form, and must be used within five to seven days of collection. In this study, DMSO is used to preserve platelets during freezing so that they can be stored for longer than five to seven days. Investigators hope to learn if thawed cryopreserved platelets are functional and safe for transfusion in humans.
Platelets are currently stored in liquid form for a maximum of five to seven days. To extend the shelf-life of platelets, DMSO is added to freeze platelets for long-term storage. In vitro studies have shown that such cryopreserved platelets can be kept for at least two years at -80oC. This study is a clinical trial that aims to primarily assess the safety of cryopreserved pooled buffy coat-derived platelets in patients with hypoproliferative thrombocytopenia and no platelet refractoriness. Subjects will be randomised into two arms either a liquid platelet (control) or frozen platelet arm (treatment) and may receive four or more platelet transfusions per thrombocytopenic cycle. Each subject may participate in the study for up to two thrombocytopenic period, assuming a wash-out period of at least five days (during which the subject receives no platelet transfusions) between the two thrombocytopenic periods. If subjects participate in the study for more than one thrombocytopenic period, they will automatically be enrolled in the opposing arm for their second thrombocytopenic period. ;
|Source||Singapore General Hospital|
|Phase||Phase 1/Phase 2|
|Start date||October 25, 2019|
|Completion date||March 24, 2021|