Development of asparaginase Erwinia chrysanthemi for the treatment of acute lymphoblastic leukemia.

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Salzer WL, Asselin BL, Plourde PV, Corn T, Hunger SP

Development of asparaginase Erwinia chrysanthemi for the treatment of acute lymphoblastic leukemia.

Ann N Y Acad Sci. 2014 Nov;1329:81-92. doi: 10.1111/nyas.12496. Epub 2014 Aug 5.

PubMed ID
25098829 [ View in PubMed
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Abstract

Since it was identified in 1963 as the antileukemic agent in guinea pig serum, L-asparaginase (ASNase) has become an integral component of chemotherapy protocols to treat patients with acute lymphoblastic leukemia (ALL). Escherichia coli and Erwinia chrysanthemi provide the sources of ASNase used clinically today. From the time ASNase was first introduced into treatment protocols, the 5-year survival rate has increased significantly, particularly in children and adolescents. E. coli-derived ASNase was approved in 1978 to be used as part of a multiagent chemotherapy to treat ALL. However, the development of hypersensitivity in 10-30% of patients often leads to treatment discontinuation. E. chrysanthemi-derived ASNase (referred to herein as ASNase Erwinia chrysanthemi) is immunologically distinct from E. coli ASNase and therefore does not cross-react with the E. coli enzyme. In 2011, ASNase Erwinia chrysanthemi was approved in the United States for patients who develop hypersensitivity to E. coli-derived ASNase. When indicated, a switch from ASNase E. coli to ASNase E. chrysanthemi allows patients to continue to receive treatment and maintain therapeutic levels of ASNase activity. Therapeutic drug monitoring may help ensure that therapeutic enzyme levels are maintained. Pegylated recombinant ASNase Erwinia chrysanthemi is currently being developed to improve pharmacokinetic properties and reduce immunogenicity.

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