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Minor4 versionsRe-verified since May 31, 2022, no change to tracked fieldsv44-v47
MinorTrial status: Active, Not Recruiting to Completedv43
MinorCompletion date: Jun 2018 to Jun 2019v42
NotableResults first posted: Jun 14, 2017Primary endpoint revised · Primary completion date changed from estimate of Jun 2015 to Aug 2014 · Completion date: Jun 2015 to Jun 2018 · 4 morev41Show all 8 changesShow less
Primary endpoint revised
Primary completion date changed from estimate of Jun 2015 to Aug 2014
NotablePrimary and study completion dates: Nov 2013 to Jun 2015v40
MinorRe-verified, no change to tracked fieldsv39
MinorTrial status: Recruiting to Active, Not RecruitingSite details revised at 10 of 10 sitesv38Show all 2 changesShow less
Site details revised at 10 of 10 sites
NotablePrimary completion date: May 2010 to Nov 2013Enrollment target: 544 to 800 · Completion date: Nov 2013 · Study title shortened, about 9 wordsv37Show all 4 changesShow less
MinorStudy Status, Study Description, Eligibilityv5
MinorRe-verified, no change to tracked fieldsv4
Stopped: an ongoing trial was terminated, suspended or withdrawn.
Notable: the trial’s plan changed such as a big move in its timeline or size, a new primary endpoint, sponsor or phase, or recruiting opened or resumed.
Minor: routine progress and housekeeping, such as sites added or enrollment closed.
RATIONALE: L-asparaginase is an important component of treatment for childhood acute lymphoblastic leukemia, but is also associated with notable side-effects, including hypersensitivity, pancreatitis, and thrombosis. We have previously reported that patients with acute lymphoblastic leukemia in whom asparaginase treatment was discontinued because of intolerable side-effects had survival outcomes that were inferior to those who received all or nearly all of their intended doses. Two bacterial sources of asparaginase exist: Escherichia coli (E coli) and Erwinia chrysanthemia (Erwinia). Generally, the E coli-derived enzyme has been used as front-line therapy and the Erwinia-derived preparation has been reserved for patients who develop hypersensitivity reactions. Pegylated E coli asparaginase (PEG-asparaginase) has a longer half-life and is potentially less immunogenic than native E coli L-asparaginase, and has been used as the initial asparaginase preparation in some pediatric acute lymphoblastic leukemia treatment regimens.
PURPOSE: Although the pharmacokinetics of each of these asparaginase preparations: intravenous PEG-asparaginase (IV-PEG) and intramuscular native E coli L-asparaginase (IM-EC) have been well characterized, their relative efficacy and toxicity have not been studied extensively.