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Busulfan, Cyclophosphamide, and Melphalan or Busulfan and Fludarabine Phosphate Before Donor Hematopoietic Cell Transplant in Treating Younger Patients With Juvenile Myelomonocytic Leukemia

This study is currently recruiting participants. (see Contacts and Locations)
Verified September 2014 by Children's Oncology Group
Sponsor:
Collaborator:
Information provided by (Responsible Party):
Children's Oncology Group
ClinicalTrials.gov Identifier:
NCT01824693
First received: April 2, 2013
Last updated: September 11, 2014
Last verified: September 2014

April 2, 2013
September 11, 2014
June 2013
June 2022   (final data collection date for primary outcome measure)
  • Treatment-related mortality (TRM) [ Time Frame: Day 100 after transplant ] [ Designated as safety issue: Yes ]
    Will be estimated as cumulative incidence using the Aalen-Johansen method.
  • EFS [ Time Frame: 18 months ] [ Designated as safety issue: No ]
    Will be estimated using the Kaplan-Meier method.
  • EFS [ Time Frame: 18 months ] [ Designated as safety issue: No ]
    Will be estimated using the Kaplan-Meier method.
  • TRM [ Time Frame: Day 100 ] [ Designated as safety issue: No ]
    Will be estimated as cumulative incidence using the Aalen-Johansen method.
Complete list of historical versions of study NCT01824693 on ClinicalTrials.gov Archive Site
  • Relapse/non-response rates [ Time Frame: Up to 5 years ] [ Designated as safety issue: No ]
    Will be estimated using the cumulative incidence via the method of Aalen and Johannsen.
  • Graft failure rates [ Time Frame: Up to 5 years ] [ Designated as safety issue: No ]
    Will be estimated using the cumulative incidence via the method of Aalen and Johannsen.
  • Relapse/non-response rates [ Time Frame: Up to 5 years ] [ Designated as safety issue: No ]
    Will be estimated using the cumulative incidence via the method of Aalen and Johannsen.
  • Graft failure rates [ Time Frame: Up to 5 years ] [ Designated as safety issue: No ]
    Will be estimated using the cumulative incidence via the method of Aalen and Johannsen.
Not Provided
Not Provided
 
Busulfan, Cyclophosphamide, and Melphalan or Busulfan and Fludarabine Phosphate Before Donor Hematopoietic Cell Transplant in Treating Younger Patients With Juvenile Myelomonocytic Leukemia
A Randomized Phase II Study Comparing Two Different Conditioning Regimens Prior to Allogeneic Hematopoietic Cell Transplantation (HCT) for Children With Juvenile Myelomonocytic Leukemia (JMML)

This randomized phase II trial studies how well giving busulfan, cyclophosphamide, and melphalan or busulfan and fludarabine phosphate before donor hematopoietic cell transplant works in treating younger patients with juvenile myelomonocytic leukemia. Giving chemotherapy before a donor hematopoietic transplant helps stop the growth of cancer cells. It may also stop the patient's immune system from rejecting the donor's stem cells. When the healthy stem cells from a donor are infused into the patient, they may help the patient's bone marrow make stem cells, red blood cells, white blood cells, and platelets. It is not yet known whether giving busulfan, cyclophosphamide, and melphalan or busulfan and fludarabine phosphate before a donor stem cell transplant is more effective in treating juvenile myelomonocytic leukemia.

PRIMARY OBJECTIVES:

I. To compare - in a randomized fashion - the day 100 treatment related mortality (TRM) incidence for two myeloablative conditioning regimens, busulfan-fludarabine (fludarabine phosphate) (BU-FLU) and busulfan-cyclophosphamide-melphalan (BU-CY-MEL), prior to hematopoietic cell transplant (HCT) for children with juvenile myelomonocytic leukemia (JMML), in order to determine the preferred regimen for future trials.

II. To compare - in a randomized fashion - the 18-month event-free survival (EFS) following two different myeloablative conditioning regimens (BU-FLU vs. BU-CY-MEL) prior to HCT for children with JMML, in order to determine the preferred regimen for future trials.

SECONDARY OBJECTIVES:

I. To determine the 18-month relapse incidence (RI) following two different myeloablative conditioning regimens (BU-FLU vs. BU-CY-MEL) prior to HCT for children with JMML.

II. To determine the graft failure rates following two different myeloablative conditioning regimens (BU-FLU vs. BU-CY-MEL) prior to HCT for children with JMML.

TERTIARY OBJECTIVES:

I. To determine the rates of severe toxicities (grade 3/4) at day 100 post-HCT between the two myeloablative conditioning regimens (BU-FLU vs. BU-CY-MEL).

II. To determine the rates of acute and chronic (at 18 months post-HCT) graft-versus-host disease (GVHD) following HCT using two different conditioning regimens (BU-FLU vs. BU-CY-MEL) in children with JMML.

III. To create a JMML-specific pre-HCT index to allow better risk-stratification of future patients.

IV. To determine the feasibility of assessing post-transplant disease burden by donor chimerism measurements and allele-specific polymerase chain reaction (PCR) in mononuclear and sorted cell subsets.

V. To validate gene expression and methylation classifiers predictive of relapse in patients with JMML.

VI. To comprehensively assess genetic and biochemical alterations amongst patients with JMML who are treated on this transplant protocol.

OUTLINE: Patients are randomized to 1 of 2 treatment arms.

ARM I:

CONDITIONING REGIMEN: Patients receive busulfan intravenously (IV) over 2-3 hours once daily (QD), every 12 hours, or every 6 hours on days -8 to -5, cyclophosphamide IV over 60 minutes QD on days -4 and -3, and melphalan IV over 15-30 minutes on day -1.

TRANSPLANT: Patients undergo allogeneic HCT on day 0.

Patients receive tacrolimus IV or orally (PO) on days -1 to 98 (related donor) or 180 (unrelated donor) and mycophenolate mofetil IV over 2 hours or PO every 8 hours on days 1-30 (related donor) or 45 (unrelated donor).

ARM II:

CONDITIONING REGIMEN: Patients receive busulfan as in Arm I and fludarabine phosphate IV over 30-60 minutes on days -5 to -2.

TRANSPLANT: Patients undergo allogeneic HCT as in Arm I.

Patients receive tacrolimus IV or PO on days -1 to 98 (related donor) or 180 (unrelated donor) and mycophenolate mofetil IV over 2 hours or PO every 8 hours on days 1-30 (related donor) or 45 (unrelated donor).

After completion of study treatment, patients are followed up for 5 years.

Interventional
Phase 2
Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Juvenile Myelomonocytic Leukemia
  • Drug: busulfan
    Given IV
    Other Names:
    • BSF
    • BU
    • Misulfan
    • Mitosan
    • Myeloleukon
  • Drug: cyclophosphamide
    Given IV
    Other Names:
    • CPM
    • CTX
    • Cytoxan
    • Endoxan
    • Endoxana
  • Drug: melphalan
    Given IV
    Other Names:
    • Alkeran
    • CB-3025
    • L-PAM
    • L-phenylalanine mustard
    • L-Sarcolysin
  • Drug: fludarabine phosphate
    Given IV
    Other Names:
    • 2-F-ara-AMP
    • Beneflur
    • Fludara
  • Procedure: allogeneic hematopoietic stem cell transplantation
    Undergo allogeneic HCT
  • Drug: tacrolimus
    Given IV or PO
    Other Names:
    • FK 506
    • Prograf
  • Drug: mycophenolate mofetil
    Given IV or PO
    Other Names:
    • Cellcept
    • MMF
  • Other: pharmacological study
    Correlative studies
    Other Name: pharmacological studies
  • Other: laboratory biomarker analysis
    Correlative studies
  • Experimental: Arm I (busulfan, cyclophosphamide, melphalan)

    CONDITIONING REGIMEN: Patients receive busulfan IV QD, every 12 hours, or every 6 hours over 2-3 hours on days -8 to -5, cyclophosphamide IV QD over 60 minutes on days -4 and -3, and melphalan IV over 15-30 minutes on day -1.

    TRANSPLANT: Patients undergo allogeneic HCT no sooner than 24 hours after the last dose of chemotherapy.

    Patients receive tacrolimus IV or PO on days -1 to 98 (related donor) or 180 (unrelated donor) and mycophenolate mofetil IV over 2 hours or PO every 8 hours on days 1-30 (related donor) or 45 (unrelated donor).

    Interventions:
    • Drug: busulfan
    • Drug: cyclophosphamide
    • Drug: melphalan
    • Procedure: allogeneic hematopoietic stem cell transplantation
    • Drug: tacrolimus
    • Drug: mycophenolate mofetil
    • Other: pharmacological study
    • Other: laboratory biomarker analysis
  • Experimental: Arm II (busulfan, fludarabine phosphate)

    CONDITIONING REGIMEN: Patients receive busulfan as in Arm I and fludarabine phosphate IV over 1 hour on days -5 to -2.

    TRANSPLANT: Patients undergo allogeneic HCT as in Arm I.

    Patients receive tacrolimus IV or PO on days -1 to 98 (related donor) or 180 (unrelated donor) and mycophenolate mofetil IV over 2 hours or PO every 8 hours on days 1-30 (related donor) or 45 (unrelated donor).

    Interventions:
    • Drug: busulfan
    • Drug: fludarabine phosphate
    • Procedure: allogeneic hematopoietic stem cell transplantation
    • Drug: tacrolimus
    • Drug: mycophenolate mofetil
    • Other: pharmacological study
    • Other: laboratory biomarker analysis
Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Recruiting
145
Not Provided
June 2022   (final data collection date for primary outcome measure)

Inclusion Criteria:

  • Patients must have a strong clinical suspicion of JMML, based on a modified category 1 of the revised diagnostic criteria; specifically, eligible patients must have all of the following:

    • Splenomegaly
    • Absolute monocyte count (AMC) > 1000/uL
    • Blasts in peripheral blood (PB)/bone marrow (BM) < 20%
  • For the 7-10% of patients without splenomegaly, the diagnostic entry criteria must include all other features described above and at least 2 of the following criteria:

    • Circulating myeloid precursors
    • White blood cell (WBC) > 10,000/uL
    • Increased fetal hemoglobin (HgbF) for age
    • Sargramostim (GM-CSF) hypersensitivity OR, patients must have been previously diagnosed with JMML
  • Patients must be previously untreated with HCT
  • All patients and/or their parents or legal guardians must sign a written informed consent
  • All institutional, Food and Drug Administration (FDA), and National Cancer Institute (NCI) requirements for human studies must be met

Exclusion Criteria:

  • Patients with a known germline mutation of PTPN11 (Noonan's Syndrome) are not eligible
  • Patients with a known history of NF1 (Neurofibromatosis Type 1) and either

    • A history of a tumor of the central nervous system (astrocytoma or optic glioma), or
    • A malignant peripheral nerve sheath tumor with a complete remission of < 1 year are not eligible
  • Human immunodeficiency virus (HIV) positive patients are not eligible
Both
3 Months to 18 Years
No
United States,   Australia,   Canada,   New Zealand
 
NCT01824693
ASCT1221, NCI-2013-00738, COG-ASCT1221, ASCT1221, ASCT1221, U10CA180886, U10CA098543
Yes
Children's Oncology Group
Children's Oncology Group
National Cancer Institute (NCI)
Principal Investigator: Christopher Dvorak, MD Children's Oncology Group
Children's Oncology Group
September 2014

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP