Poly(Ethylene Glycol)(PEG)-Asparaginase During Two Treatment Courses
PEG-asparaginase During Two Treatment Courses in the Treatment of Childhood Acute Lymphoblastic Leukemia
  • Phase

    Phase 4
  • Study Type

  • Status

    Unknown status
  • Study Participants

The purpose of this study is

to determine the correct dose for intramuscular administration
to compare the frequency of antibody formation after intramuscular administration of native E.coli asparaginase and PEG-asparaginase during two treatment courses in the treatment of childhood lymphoblastic leukemia
Asparaginase is used in the treatment of childhood lymphoblastic leukemia. Approximately 1/3 of the patients develops blocking antibodies against native E.coli asparaginase during the second exposure, so that they do not benefit from treatment and thus may have a worse prognosis.

PEG-asparaginase is less immunogenic so that fewer patients may develop antibodies during the second exposure.

There is no published study about the antibody formation after treatment of children with PEG-asparaginase during two treatment courses.

The first part of the study is a description of the pharmacokinetics of PEG-asparaginase after intramuscular administration in order to determine the correct dose.

The second part of the study is a comparison of antibody formation during two treatment courses after intramuscular administration og native E.coli asparaginase and PEG-asparaginase.

Other side effects than antibodies will be registered during treatment with PEG-asparaginase. Finally comparison of the 5-year EFS between the groups (native E.coli asparaginase and PEG-asparaginase as well as patients who have and have not developed antibodies) will be evaluated.
Study Started
Jun 30
Study Completion
Dec 31
Last Update
Sep 30

Drug PEG-asparaginase


Inclusion Criteria:

1-17 years
Newly diagnosed ALL (high intensive)
Treated according to the NOPHO-2000 protocol
Treated at one of the Nordic pediatric oncology centers

Exclusion Criteria:

<1 year and >18 years
Newly diagnosed ALL other than high intensive
Not treated according to the NOPHO-2000 protocol
Not treated at one of the Nordic pediatric oncology centers
Allergy to the contents
Pancreatitis (Active or earlier)
No Results Posted