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Prospective, multicenter, uncontrolled cohort study to analyze the efficacy of a risk adapted treatment strategy, including gemtuzumab ozogamicin (GO) during consolidation, for patients with acute myeloid leukemia (AML).
Patients will be stratified according to age in a first step, with a cut-point of 65 years old. For patients younger than 65 years old who achieve complete response, a second stratification will be made before first consolidation treatment. This second stratification will be performed according to the follow parameters: MDR at the end of induction, karyotype and molecular findings, including FLT3 internal tandem duplication (ITD) and NPM1 mutations. The following groups can be identified according to these parameters:
Patients aged 65 or younger who are candidates for intensive chemotherapy.
Patients who are in first CR with negative MRD (less than 0.1%), good prognosis karyotype and, in the case of t(8;21) or inv(16), absence of mutations in the exon 17 of c-kit.
Patients who are in first CR with negative MRD (less than 0.1%), intermediate-risk karyotype, NPM1 positive and FLT3 negative.
Patients who are in first CR with negative MRD (less than 0.1%), intermediate-risk karyotype, absence of NPM1 mutations and who are negative for FLT3-ITD or FLT3-ITD positive with a ratio less than 0.8, regardless NPM1 status.
Patients who are in first CR with positive MRD (greater than 0.1%), t(8;21) or inv(16) with mutations in the exon 17 of c-kit, intermediate risk karyotype with positive FLT3-ITD and ratio greater or equal to 0.8 or high-risk karyotype.
Patients over 65 years who are able to receive intensive chemotherapy.
Treatment is tailored for each of the previously defined groups:
Induction with Idarubicin and ARA-C in "3 +7" schedule (IDA 12 mg/m2 x 3 days and ARA-C 200 mg/m2 x 7 days).
Two consolidation cycles with ARA-C at a dose of 3 g/m2 on days 1, 3 and 5. Collection of peripheral blood stem cells (PBSC) after the first consolidation. Autologous stem cell transplantation (ASCT) with Busulphan 1 mg/kg/6 VO or 0,8 mg/kg/6 h IV (Busilvex®) from day -8 to -5; Etoposide 20 mg/kg/d from day -4 to -3 and ARA-C 3 g/m2/12 h from on days -3 and -2 (see criteria for HiDAC modification); and G-CSF 10 µg/kg/d from day -9 to -2 (BEA schedule). Allogeneic hematopoietic stem cell transplantation (allo-HSCT) is not recommended in first CR in this group of patients.
First consolidation with Idarubicin and ARA-C at the same dose than induction plus GO 3 mg/m2 at day 1. Collection of PBSC after first consolidation. Second consolidation with ARA-C 3 g/m2 on days 1, 3 and 5 followed by ASCT with BEA conditioning. It is not recommended to perform Allo-HSCT, especially from alternative donors, in first CR.
First consolidation with Ida and ARA-C at the same dose than induction plus GO 3 mg/m2 at day 1. Collection of PBSC after first consolidation. Second consolidation with ARA-C 3 g/m2 on days 1, 3 and 5 followed by ASCT with BEA schedule if no HLA-identical sibling is available. Patients in this group are candidates for allo-HSCT in first CR if HLA-identical sibling is available. Allo-HSCT will be performed after first consolidation.
First consolidation with Ida and ARA-C at the same dose than induction plus GO 3 mg/m2 at day 1. Collection of PBSC after first consolidation. Second consolidation with ARA-C 3 g/m2 on days 1, 3 and 5 followed by ASCT with BEA schedule if no donor is available. Patients in this group are candidates for allo-HSCT in first CR, including alternative donors. Allo-HSCT will be performed after first consolidation or later if no donor is available at this time.
Induction with Idarubicin and ARA-C "2 + 5" (IDA 12 mg/m2 x 2 days and ARA-C 200 mg/m2 x 5 days). Two consolidations with GO 3 mg/m2 day 1 and ARA-C 100 mg/m2 continuous infusion days 1 to 5.
AML CHARACTERIZATION AND SAMPLES COLLECTION:
To achieve a complete characterization of AML, inmunophenotype analysis (defining the pattern for MRD studies), cytogenetics, FISH for inv(16), t(8;21) and t(15;17), and molecular study for AML1/ETO, CBFβ/MYH11, NPM1 and FLT3-ITD will be performed in all cases. For FLT3-ITD, the ratio between the mutated and not mutated allele will be calculated.
During the phase of samples collection, DNA, RNA and viable cells will be stored.
Allocation: Non-Randomized, Control: Uncontrolled, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
Acute Myeloblastic Leukemia
Hoapital La Fe
Published on BioPortfolio: 2014-08-27T03:16:58-0400
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