ALL-REZ BFM 2002: Multi-Center Study for Children With Relapsed Acute Lymphoblastic Leukemia
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|ClinicalTrials.gov Identifier: NCT00114348|
Recruitment Status : Completed
First Posted : June 15, 2005
Last Update Posted : February 4, 2013
|Condition or disease||Intervention/treatment||Phase|
|Lymphoblastic Leukemia, Acute Lymphoma, Non-Hodgkin||Procedure: R-Blocks Procedure: Protocol II-Ida||Phase 4|
The study is based on the results of five consecutive trials performed by the ALL-REZ BFM study group since 1983. Thus the study meets the criteria of evidence-based therapy, which has been developed over nearly 20 years. Multi-agent chemotherapy in short intensive courses, which are separated by treatment-free intervals, has proved to be a successful form of induction and consolidation therapy. It is followed by preventative (or therapeutic) cranial irradiation and continuation therapy. A number of risk factors, particularly the time of relapse, site of relapse, and the ALL immunophenotype, allow the stratification of patients into a group that has an acceptable prognosis after treatment with chemotherapy alone and a second group that has a high risk of subsequent recurrence following the achievement of a second remission. The latter group requires further intensification of consolidation therapy by allogenic stem cell transplantation (SCT). To date, the indication for SCT has remained unclear for a large and heterogeneous group of patients with an intermediate prognosis. During the precursor study ALL-REZ BFM 96, however, the amount of minimal residual disease (MRD) determined quantitatively with clonal molecular markers after the second induction therapy element was shown to be a highly significant predictor of relapse-free survival.
The primary objective of study ALL-REZ BFM 2002 is the randomized comparison of a lower dosed and less intensive, but continuous consolidation therapy with conventional therapy administered in treatment blocks. Outcome measures are the reduction of MRD, event-free and overall survival, and the toxicity associated with each treatment strategy.
The secondary objectives include an improvement of the prognosis in the intermediate risk group using the stratification in treatment arms with and without allogenic SCT based on the MRD result after the second treatment element of induction therapy. An additional aim is to improve the remission induction rate in all groups by increasing the treatment intensity during induction. This is achieved by shortening the intervals between treatment blocks in keeping with the principles of guiding therapy as defined in the protocol. A series of biological companion studies aims to advance our understanding of the disorder and to establish novel prognostic factors that will allow a risk-adapted therapy.
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||338 participants|
|Intervention Model:||Parallel Assignment|
|Masking:||None (Open Label)|
|Official Title:||ALL-REZ BFM 2002: Protocol for the Treatment of Children With Relapsed Acute Lymphoblastic Leukemia|
|Study Start Date :||August 2003|
|Actual Primary Completion Date :||July 2012|
|Actual Study Completion Date :||July 2012|
Active Comparator: R-Blöcke
Procedure: Protocol II-Ida
- Reduction of MRD [ Time Frame: a ]
- event-free and overall survival [ Time Frame: a ]
- the toxicity associated with each treatment strategy [ Time Frame: a ]
- Improvement of the prognosis in the intermediate risk group using the stratification in treatment arms with and without allogenic SCT based on the MRD result after the second treatment element of induction therapy [ Time Frame: a ]
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00114348
|Berlin, Germany, 13353|
|Principal Investigator:||Günter Henze, Prof.Dr.med.||GPOH|