Clinical Trial: Donor Stem Cell Transplant in Treating Young Patients With Acute Myeloid Leukemia With Monosomy 7, -5/5q-, High FLT3-ITD AR, or Refractory or Relapsed Acute Myelogenous Leukemia

Study Status: Active, not recruiting
Recruit Status: Active, not recruiting
Study Type: Interventional

Official Title: Killer Immunoglobulin-like Receptor (KIR) Incompatible Unrelated Donor Hematopoietic Cell Transplantation (SCT) for AML With Monosomy 7, -5/5q-, High FLT3-ITD AR, or Refra

Brief Summary:

RATIONALE: Giving chemotherapy before a donor stem cell transplant using stem cells that closely match the patient's stem cells, helps stop the growth of cancer cells. It also stops the patient's immune system from rejecting the donor's stem cells. The donated stem cells may replace the patient's immune cells and help destroy any remaining cancer cells (graft-versus-tumor effect). Sometimes the transplanted cells from a donor can also make an immune response against the body's normal cells. Giving antithymocyte globulin before transplant and cyclosporine, tacrolimus, and methotrexate before and after transplant may stop this from happening.

PURPOSE: Natural Killer (NK) cells from the donor's bone marrow may be important in fighting leukemia. Bone marrow donors can be selected based on the type of NK cells they have, specifically the killer immunoglobulin receptor (KIR) type. This study provides information on KIR type from potential donors, which can be used in selecting the bone marrow donor. This phase II trial of unrelated donor stem cell transplant in patients with high risk AML (monosomy 7, -5/5q-, high FLT3-ITD AR, or refractory or relapsed AML) in which KIR typing of the patients and potential donors will be available to the treating transplant physician at the time of donor selection.


Detailed Summary:

OBJECTIVES:

  • To define the relationship between the status of donor NK-cell receptor and patient outcomes after killer immunoglobulin-like receptor-incompatible unrelated donor (URD) and umbilical cord blood (UCB) hematopoietic cell transplantation (HCT) in young patients with acute myeloid leukemia with monosomy 7, -5/5q-, high FLT3 internal tandem duplication allelic ratio (High-FLT3-ITD AR), or refractory or relapsed acute myelogenous leukemia.
  • To correlate the relationships between factors affecting NK receptor status and clinical events.
  • To assess NK-cell development after URD and UCB HCT in patients with poor prognosis AML.
  • To evaluate NK-cell reconstitution and receptor-acquisition pattern in these patients.

OUTLINE: This is a multicenter study.

  • Preparative regimen: Patients receive 1 of the following regimens:

    • Hematopoietic stem cell transplantation (SCT): Patients receive busulfan IV every 6 hours on days -9 to -6, high-dose cyclophosphamide IV over 1 hour on days -5 to -2, anti-thymocyte globulin IV once or twice daily over 4 hours on days -3 to -1, and methylprednisolone IV on days -3 to -1.
    • Umbilical cord blood (UCB) transplantation: Conditioning regimen, infusion procedures, and post-transplant immunoprophylaxis for patients with an UCB donor are according to institutional guidelines and standards.
  • Allogeneic hematopoietic stem cell transplantation (SCT) or umbilical cord blood (UCB
    Sponsor: Children's Oncology Group

    Current Primary Outcome:

    • Overall Survival (OS) [ Time Frame: At 5 years from HSCT date ]
      OS - Time from HSCT until death
    • Cumulative Incidence of NK Cell Reconstitution [ Time Frame: At 5 years from HSCT date ]
      Cumulative incidence of successful reconstitution to donor level is calculated.


    Original Primary Outcome:

    • .Overall survival
    • Disease-free survival
    • Graft-versus-host disease
    • Relapse
    • Transplant-related mortality
    • Time to recover to the donor-specific level of expression for each natural killer cell receptor


    Current Secondary Outcome:

    Original Secondary Outcome:

    Information By: Children's Oncology Group

    Dates:
    Date Received: November 2, 2007
    Date Started: January 2008
    Date Completion:
    Last Updated: January 6, 2017
    Last Verified: July 2016