The aim of the trial is to test whether adding 6 injections of rituximab to standard "Lymphome malin B" LMB chemotherapy regimen improves the Event Free Survival (EFS) compared with LMB chemotherapy alone in children / adolescents with advanced stage B-cell Non-Hodgkin Lymphoma (NHL) / B-Acute Leukemia (B-AL)(stage III and LDH \> Nx2, any stage IV or B-AL).
Conditions: B-cell Non Hodgkin Lymphoma, Mature B-cell Leukemia Burkitt-type
Eligibility Criteria
Inclusion Criteria
- Histologically or cytologically proven B-cell malignancies, either Burkitt lymphoma or B-AL (=Burkitt leukaemia = L3-AL) or diffuse large B-cell NHL or aggressive mature B-cell NHL non other specified or specifiable.
- Stage III with elevated LDH level ("B-high"), \[LDH \> twice the institutional upper limit of the adult normal values (\> Nx2)\] or any stage IV or B-AL.
- months to less than 18 years of age at the time of consent.
- Males and females of reproductive potential must agree to use an effective contraceptive method during the treatment, and after the end of treatment: during twelve months for women, taking into account the characteristics of rituximab and during five months for men, taking into account the characteristics of methotrexate.
- Complete initial work-up within 8 days prior to treatment that allows definite staging.
- Able to comply with scheduled follow-up and with management of toxicity.
- Signed informed consent from patients and/or their parents or legal guardians
Exclusion Criteria
- Follicular lymphoma, MALT and nodular marginal zone are not included into this therapeutic study
- Patients with congenital immunodeficiency, chromosomal breakage syndrome, prior organ transplantation, previous malignancy of any type, or known positive HIV serology.
- Evidence of pregnancy or lactation period.
- Past or current anti-cancer treatment except corticosteroids during less than one week.
- Tumor cell negative for CD20
- Prior exposure to rituximab.
- Severe active viral infection, especially hepatitis B.
- Hepatitis B carrier status history of HBV or positive serology.
- Participation in another investigational drug clinical trial.
- Patients who, for any reason, are not able to comply with the national legislation.
Eligibility criteria are kept as the original English records from ClinicalTrials.gov; actual eligibility is determined by the research team's formal assessment and the informed consent form. Source: ClinicalTrials.gov, updated automatically every two weeks. Last synced: 2026年10月8日.