CLAG-M or FLAG-Ida Chemotherapy and Reduced-Intensity Conditioning Donor Stem Cell Transplant for the Treatment of Relapsed or Refractory Acute Myeloid Leukemia, Myelodysplastic Syndrome, or Chronic Myelomonocytic Leukemia

Refractory Acute Myeloid Leukemia Clinical Trial

Official title: CLAG-M or FLAG-Ida Chemotherapy Followed Immediately by Related/Unrelated Reduced-Intensity Conditioning (RIC) Allogeneic Hematopoietic Cell Transplantation for Adults With Myeloid Malignancies at High Risk of Relapse: A Phase 1 Study

Status Recruiting

Clinical Trial Summary

This phase I trial studies the best dose of total body irradiation when given with cladribine, cytarabine, filgrastim, and mitoxantrone (CLAG-M) or idarubicin, fludarabine, cytarabine and filgrastim (FLAG-Ida) chemotherapy reduced-intensity conditioning regimen before stem cell transplant in treating patients with acute myeloid leukemia, myelodysplastic syndrome, or chronic myelomonocytic leukemia that has come back (relapsed) or does not respond to treatment (refractory). Giving chemotherapy and total body irradiation before a donor peripheral blood stem cell transplant helps kill cancer cells in the body and helps make room in the patient's bone marrow for new blood-forming cells (stem cells) to grow. When the healthy stem cells from a donor are infused into a patient, they may help the patient's bone marrow make more healthy cells and platelets and may help destroy any remaining cancer cells. Sometimes the transplanted cells from a donor can attack the body's normal cells called graft versus host disease. Giving cyclophosphamide, cyclosporine, and mycophenolate mofetil after the transplant may stop this from happening.

Clinical Trial Description

OUTLINE: This a dose-escalation study of TBI. Patients are assigned to 1 of 2 arms.

ARM I: Patients receive filgrastim (G-CSF) subcutaneously (SC) daily on days -9 to -4, cladribine intravenously (IV) over 2 hours daily on days -8 to -4, cytarabine IV over 2 hours daily on days -8 to -4, and mitoxantrone IV daily on days -8 to -6. If white blood cell (WBC) > 20,000/uL, filgrastim on days -9 and -8 may be omitted at physician discretion. Patients undergo TBI on either day -1 or 0 and HCT on day 0.

GVHD PROPHYLAXIS: Patients receive cyclophosphamide IV over 1-2 hours daily on days 3-4, cyclosporine IV over 1-2 hours twice daily (BID) on days 5-60, and mycophenolate mofetil IV or orally (PO) BID on days 5-28 (transplant with related donors) or three times daily (TID) on days 5-35 (transplant with unrelated donors). After day 60, patients continue to receive cyclosporine tapered through day 180 at the discretion of the treating physician in the absence of GVHD.

ARM II: Patients receive G-CSF SC daily on days -9 to -4, fludarabine IV over 30 minutes daily on days -8 to -4, cytarabine IV over 2 hours daily on days -8 to -4, and idarubicin IV daily on days -8 to -6. If white blood cell (WBC) > 20,000/uL, filgrastim on days -9 and -8 may be omitted at physician discretion. Patients undergo TBI on either day -1 or 0 and HCT on day 0.

GVHD PROPHYLAXIS: Patients receive cyclophosphamide IV over 1-2 hours daily on days 3-4, cyclosporine IV over 1-2 hours BID on days 5-60, and mycophenolate mofetil IV or PO BID on days 5-28 (transplant with related donors) or TID on days 5-35 (transplant with unrelated donors). After day 60, patients continue to receive cyclosporine tapered through day 180 at the discretion of the treating physician in the absence of GVHD.

Patients in both arms undergo multigated acquisition scan (MUGA) or echocardiography, and x-ray imaging during screening and as clinically indicated or per standard practice. Patients also undergo bone marrow biopsy and aspirate during screening, day 28, day 80 and at 1 year.

After completion of study treatment, patients are followed up at 100 days, at 6, 12, and 24 months post-transplant. ;

Related Conditions & MeSH terms

• Acute Disease
• Leukemia
• Leukemia, Myeloid
• Leukemia, Myeloid, Acute
• Leukemia, Myelomonocytic, Acute
• Leukemia, Myelomonocytic, Chronic
• Leukemia, Myelomonocytic, Juvenile
• Myelodysplastic Syndromes
• Preleukemia
• Recurrence
• Recurrent Acute Myeloid Leukemia
• Recurrent Chronic Myelomonocytic Leukemia
• Recurrent Myelodysplastic Syndrome
• Refractory Acute Leukemia of Ambiguous Lineage
• Refractory Acute Myeloid Leukemia
• Refractory Acute Undifferentiated Leukemia
• Refractory Chronic Myelomonocytic Leukemia
• Refractory Mixed Phenotype Acute Leukemia
• Refractory Myelodysplastic Syndrome
• Syndrome

• NCT number: NCT04375631
• Study type: Interventional
• Source: Fred Hutchinson Cancer Center
• Contact: Filippo Milano
• Phone: 206.667.5925
• Email: fmilano@fredhutch.org
• Status: Recruiting
• Phase: Phase 1
• Start date: December 3, 2020
• Completion date: December 31, 2027