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  • Title: [New possibilities of treatment with PEG-L-asparaginase in patients with acute lymphoblastic leukemia sensitized to l-asparaginase E.coli and erwinase].
    Author: Sikorska-Fic B, Makowska K, Rokicka-Milewska R.
    Journal: Wiad Lek; 1998; 51 Suppl 4():233-6. PubMed ID: 10731974.
    Abstract:
    L-asparaginase is widely used in the treatment of acute lymphoblastic leukemia in children and adults. Use of L-aspa E. Coli as well as Erwinase is not possible in all cases because of the side effects, mainly allergic reactions and disfunction of pancreas. Recently, the new form of the enzyme PEG-L-asparaginase was introduced. Binding L-asparaginase E. coli to polyethylene glycol a decreased its toxicity, extended its plasma half-live, not significantly affecting the efficacy. The aim of the study was to examine the results of PEG-L-asparaginase administration in five children with acute lymphoblastic leukemia, and the symptoms of intolerance to L-aspa E. Coli or Erwinase. There were three children with newly diagnosed ALL and two children with first relapse of ALL, treated according to New York Protocol and BFM-90 Protocol for ALL relapses respectively. PEG-L-asparaginase (Oncaspar) was administered in the dose of 2500 IU/m2. According to the protocol four children received 11 courses of treatment with the full dose of the drug. The number of doses for individual patient varied from one to six. The short-lived nettlerash was observed in one patient during two subsequent infusions of the drug. Hydrocortisone and antihistamine drugs were administered. Treatment with PEG-asparaginase was discontinued in one child, who developed dyspnea, nausea, vomiting and face rash during the third dose of the drug. Oncaspar is the valuable drug, which enabled continuation of treatment according to protocol in four out of five children with bad tolerance to routinely used L-asparaginase preparations.
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