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The outcomes of children with lymphoblastic lymphoma (LBL) in China in our previous study were not unexpected. In this study, through further modification treatment protocols and strengthen domestic multicenter collaboration, we try to improve survival for children with LBL when compared to our previous study.
The treatment for LBL is an ALL (acute lymphoblastic leukemia)-based treatment. Additional, high dose L-asparaginase was reported to improve disease-free survival for patients with ALL. The event free survival (EFS) for pediatric LBL in most western countries have achieved 75% to 85%. However, the outcomes of children with LBL in China were not unexpected. In our previous study (CCCG-LBL-2010, 2009-2013), 96 patients with newly diagnosed LBL from 7 Chinese pediatric oncology centers were included. At a median follow-up of 21 months (range, 0.3~60.7months), the 2-year event free survival was 68±5% in all patients. Patients who had achieved complete remission on day 33 of induction had significantly better EFS than those who had not (77±6% v.s.17±10%, p<0.005). In the current trial, we try to improve survival for children with LBL in China through further modification treatment protocols and strengthen domestic multicenter collaboration.
The BFM backbone will be used as the standard backbone therapy for this study. Three doses of daunorubicin are prescribed in induction compared with 4 doses in BFM studies. Cranial radiotherapy only saved for patients (>2 yrs) with CNS disease at presentation.
Complete remission (CR) is defined as at least 75% tumor regression, less than 5% BM (bone marrow)blasts, no CNS (central nervous system) disease, and disappearances of all evidence of disease from all sites for at least 4 weeks. Partial response (PR) is defined as > 50% tumor regression, and no new lesions.Response to treatment is evaluated on day 33 and day 64 of induction.Patients will be stratified into 3 risk groups.
Low risk group: patients (stage I or II) receive induction protocol I followed by the extracompartmental protocol M, and maintenance for up to a total therapy duration of 96 weeks. Totally, 3 doses of PEG-asparaginase (Pegylated-asparaginase) are applied in this group.
Intermediate risk group: patients (stage III or IV or receiving steroids within one week prior to the diagnosis) receive induction protocol I followed by the extracompartmental protocol M, reintensification protocol II, and maintenance for up to a total therapy duration of 104 weeks.Totally, 5 doses of PEG-asparaginase are applied in this group.
High risk group:patients (failure to qualify a PR, or >5% BM blasts, or with CNS disease on d33 of induction) receive induction protocol I followed by 6 intensive polychemotherapy blocks (R'), reintensification protocol II, and maintenance for up to a total therapy duration of 104 weeks. Totally, 11 doses of PEG-asparaginase are applied in this group.
Second look biopsy/resection is indicated for patients without CR on day 64 of induction. Allo- or auto-hematopoietic stem-cell transplantation is recommended for patients with residual tumor. Patients who have disease progression at any time will be removed from this protocol therapy.
Allocation: Non-Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
Prednisone,Vincristine, Pegylated-asparaginase, Cytarabine, Cyclophosphamide, Daunorubicin, 6-mercaptopurine, 6-mercaptopurine,Methotrexate, Dexamethasone,Vincristine, Pegylated-asparaginase, Cytarabine, Cyclophosphamide, Doxorubicin, 6-mercaptopurine, De
West China Second University Hospital
Children's Cancer Group, China
Published on BioPortfolio: 2016-07-28T03:38:21-0400
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Congener of CYTARABINE that is metabolized to cytarabine and thereby maintains a more constant antineoplastic action.
A pyrimidine nucleoside analog that is used mainly in the treatment of leukemia, especially acute non-lymphoblastic leukemia. Cytarabine is an antimetabolite antineoplastic agent that inhibits the synthesis of DNA. Its actions are specific for the S phase of the cell cycle. It also has antiviral and immunosuppressant properties. (From Martindale, The Extra Pharmacopoeia, 30th ed, p472)
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A hydrolase enzyme that converts L-asparagine and water to L-aspartate and NH3. EC 184.108.40.206.
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