l-asparaginase loaded red blood cells in refractory or relapsing acute lymphoblastic leukaemia in children and adults: Results of the GRASPALL 2005-01 randomized trial

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Abstract

L-asparaginase encapsulated within erythrocytes (GRASPA®) should allow serum asparagine depletion over a longer period than the native form of the enzyme, using lower doses and allowing better tolerance. The GRASPALL 2005-01 study, a multicentre randomized controlled trial, investigated three doses of GRASPA® for the duration of asparagine depletion in a phase I/II study in adults and children with acute lymphoblastic leukaemia (ALL) in first relapse. Between February 2006 and April 2008, 18 patients received GRASPA® (50iu/kg: n=6, 100iu/kg: n=6, 150iu/kg: n=6) after randomization, and six patients were assigned to the Escherichia coli native l-asparaginase (E. colil-ASNase) control group. GRASPA® was effective at depleting l-asparagine. One single injection of 150iu/kg of GRASPA® provided similar results to 8×10000iu/m2 intravenous injections of E. colil-ASNase. The safety profile of GRASPA® showed a reduction in the number and severity of allergic reactions and a trend towards less coagulation disorders. Other expected adverse events were comparable to those observed with E. colil-ASNase and there was also no difference between the three doses of GRASPA®. © 2011 Blackwell Publishing Ltd.

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Halfon-Domenech, C., Thomas, X., Chabaud, S., Baruchel, A., Gueyffier, F., Mazingue, F., … Bertrand, Y. (2011). l-asparaginase loaded red blood cells in refractory or relapsing acute lymphoblastic leukaemia in children and adults: Results of the GRASPALL 2005-01 randomized trial. British Journal of Haematology, 153(1), 58–65. https://doi.org/10.1111/j.1365-2141.2011.08588.x

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