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Fludarabine and Busulfan Followed by Allogeneic Stem Cell Transplant in Treating Older Patients With Acute Myeloid Leukemia in First Complete Remission

A Phase II Study Of Allogeneic Transplant For Older Patients With AML In First Morphologic Complete Remission Using A Non-Myeloablative Preparative Regimen

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00070135
Enrollment
121
Registered
2003-10-07
Start date
2004-01-31
Completion date
2016-06-15
Last updated
2018-06-12

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Acute Myeloid Leukemia Arising From Previous Myelodysplastic Syndrome, Adult Acute Myeloid Leukemia in Remission

Keywords

adult acute myeloid leukemia in remission, secondary acute myeloid leukemia, adult acute monocytic leukemia (M5b), adult acute erythroid leukemia (M6), adult acute megakaryoblastic leukemia (M7), adult acute minimally differentiated myeloid leukemia (M0), adult acute myeloblastic leukemia with maturation (M2), adult acute myeloblastic leukemia without maturation (M1), adult acute myelomonocytic leukemia (M4), adult acute monoblastic leukemia (M5a), adult acute myeloid leukemia with t(8;21)(q22;q22), adult acute myeloid leukemia with t(16;16)(p13;q22), adult acute myeloid leukemia with inv(16)(p13;q22), adult acute myeloid leukemia with 11q23 (MLL) abnormalities

Brief summary

This phase II trial studies how well fludarabine and busulfan followed by a donor (allogeneic) stem cell transplant work in treating older patients with acute myeloid leukemia that is in first complete remission. Giving low doses of chemotherapy, such as fludarabine and busulfan, before a donor peripheral blood stem cell transplant helps stop the growth of cells in the bone marrow, including normal blood-forming cells (stem cells) and cancer cells. It may also stops 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. The donated stem cells may replace the patient's immune system and help destroy any remaining cancer cells. Sometimes the transplanted cells from a donor can make an immune response against the body's normal cells (called graft-versus-host disease). Giving tacrolimus, methotrexate, and rabbit antithymocyte globulin before or after the transplant may stop this from happening.

Detailed description

PRIMARY OBJECTIVES: I. Determine if allogeneic transplantation from a matched sibling or unrelated donor using a non-myeloablative preparative regimen results in a 2-year disease-free survival (DFS) that is better than historical results using standard chemotherapy. SECONDARY OBJECTIVES: I. Determine 2-year actuarial risks of transplant-related mortality, acute and chronic graft-versus-host (GVHD) disease and relapse among patients with acute myeloid leukemia (AML) in first complete remission (CR1) following a non-myeloablative preparative regimen. II. To examine recovery of T and B cell number and function following non-myeloablative stem cell transplant. III. To examine the time course of T, B and myeloid progenitor chimerism following this preparative regimen. IV. To characterize the pharmacokinetics of intravenous busulfan used in a non-myeloablative preparation regimen in AML patients age \>= 60 years. OUTLINE: PREPARATIVE REGIMEN: Patients receive fludarabine intravenously (IV) over 30 minutes on days -7 to -3 and busulfan IV over 2 hours 4 times per day (every 6 hours) on days -4 and -3. GRAFT-VERSUS-HOST DISEASE (GVHD) PROPHYLAXIS: Patients receive tacrolimus orally (PO) or IV twice daily (BID) on days -2 with taper between days 90-120, and stopping by days 150-180. Patients also receive methotrexate IV on days 1, 3, 6, and 11 and rabbit antithymocyte globulin IV over 4-6 hours on days -4 through -2. ALLOGENEIC PERIPHERAL BLOOD STEM CELL TRASNPLANTATION (PBSC): Patients undergo allogeneic PBSC transplant on day 0. Patients then receive filgrastim subcutaneously (SC) daily beginning on day 12 and continuing until blood counts recover. Patients are followed monthly for 1 year, every 3 months for 1 year, and then every 6 months for 3 years.

Interventions

BIOLOGICALfilgrastim

Given SC

BIOLOGICALAnti-Thymocyte Globulin

Given IV

DRUGbusulfan

Given IV

DRUGfludarabine phosphate

Given IV

DRUGmethotrexate

Given IV

DRUGtacrolimus

Given PO or IV

PROCEDUREAllogeneic Hematopoietic Stem Cell Transplantation

Undergo allogeneic PBSC transplantation

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
Alliance for Clinical Trials in Oncology
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
60 Years to 74 Years
Healthy volunteers
No

Inclusion criteria

Eligibility Criteria: * Patients with acute myeloid leukemia (AML) (excluding French-American-British \[FAB\] classification system M3) who have achieved a first morphologic complete remission and who meet the criteria below; patients with preceding myelodysplastic syndrome (MDS) or treatment-related AML are eligible; patients with prior central nervous system (CNS) involvement are eligible as long as disease is in remission at transplant; patients with acute leukemia following blast transformation of prior chronic myeloid leukemia (CML) or other myeloproliferative disease are excluded * Complete remission (CR) will be defined according to the revised recommendations of the International Working Group (24) as all of the following: * Normal bone marrow morphology with \< 5% blasts * Absolute neutrophil count (ANC) \> 1,000/uL, referring to the count needed to confirm that the patient achieved a CR * Platelet count \> 100,000/uL * No extramedullary leukemia * No blasts in peripheral blood * CR was achieved after one or two (but no more than two) cycles of induction chemotherapy with standard cytotoxic chemotherapy (e.g., cytarabine and an anthracycline) or after no more than four cycles of a hypomethylating agent containing regimen including either 5-azacytidine or decitabine * Patients may have received as many as but no more than two cycles of consolidation therapy prior to transplant; any consolidation regimen that does not require transplant can be used; no more than 6 months can elapse from documentation of morphologic CR to transplant; the platelet count does not need to be \> 100,000/uL after consolidation, as long as the bone marrow assessment prior to transplant does not show relapse * Identification of hematopoietic cell donor * \>= 4 weeks since prior chemotherapy, radiation therapy, and surgery * Performance status 0-2 * Diffusion capacity of carbon monoxide (DLCO) \> 40% with no symptomatic pulmonary disease * Left ventricular ejection fraction (LVEF) by multi gated acquisition scan (MUGA) or echocardiogram (ECHO) \>= 30% * No uncontrolled diabetes mellitus or active serious infection requiring antibiotics * No known hypersensitivity to E. coli-derived products * No human immunodeficiency virus (HIV) infection * Calculated creatinine clearance \>= 40 cc/min * Bilirubin \< 2 mg/dL \* If bilirubin is 2-3 mg/dL, but direct bilirubin is normal then patient will be considered eligible * Aspartate aminotransferase (AST) \< 3 x upper limit of normal * DONOR: HLA-identical sibling (6/6); the donor must be determined to be an human leukocyte antigen (HLA)-identical sibling (6/6) by serologic typing for class (A, B) and low resolution molecular typing for class II (DRB1) * DONOR: Matched unrelated donor (10/10); high resolution molecular typing at the following loci is required: HLA-A, -B, -C, -DRB1, and -DQB1 * DONOR: the donor must be healthy and must be an acceptable donor as per institutional standards for stem cell donation * DONOR: the donor must have no significant cardiopulmonary, renal, endocrine, or hepatic disease * DONOR: there is no donor age restriction if the donor is a matched sibling * DONOR: syngeneic donors are not eligible

Design outcomes

Primary

MeasureTime frameDescription
2 Year Disease Free Survival In Unrelated Donor Recipient Group2 yearsPercentage of participants who were alive and relapse free at 2 years for patients who were matched with an unrelated donor for transplant. The 2 year disease free survival, with 95% confidence interval, was estimated using the Kaplan Meier method. A relapse is defined as any of the following: * Reappearance of leukemia blasts cells in peripheral blood * \>5% blasts in the marrow, not attributable to another cause (e.g., bone marrow regeneration) * If there are no circulating blasts, but the marrow contains 5-20% blasts, a repeat bone marrow ≥ 1 week later with \>5% blasts is necessary to meet the criteria for relapse * The development of extramedullary leukemia or leukemic cells in the cerebral spinal fluid

Secondary

MeasureTime frameDescription
2 Year DFS for All PatientsUp to 2 yearsPercentage of participants who were alive and relapse free at 2 years for all patients. The 2 year disease free survival, with 95% confidence interval, was estimated using the Kaplan Meier method.
Non-relapse Mortality (NRM)Up to 5 yearsPercentage of patients who died due to causes other than relapse

Countries

United States

Participant flow

Recruitment details

Between November 2004 and 2011, 121 participants were registered and received transplants at 21 centers.

Pre-assignment details

Seven (7) participants were excluded from the all analyses after they were deemed ineligible.

Participants by arm

ArmCount
Treatment (Fludarabine, Busulfan, Allogeneic PBSC)
PREPARATIVE REGIMEN: Patients receive fludarabine 30 mg/m\^2 IV over 30 minutes on days -7 to -3 and busulfan 0.8 mg/kg IV over 2 hours 4 times per day (every 6 hours) on days -4 and -3. GVHD PROPHYLAXIS: Patients receive tacrolimus 0.03 mg/kg (suggested starting dose) PO BID on days -2 with taper between days 90-120, and stopping by days 150-180. Patients also receive methotrexate 5 mg/m\^2 IV on days 1, 3, 6, and 11 and rabbit antithymocyte globulin 2.5 mg/kg IV over 4-6 hours on days -4 through -2. ALLOGENEIC PBSC: Patients undergo allogeneic PBSC transplant on day 0. Patients then receive filgrastim 5 or 10 mcg/kg SC daily beginning on day 12 and continuing until blood counts recover.
114
Total114

Baseline characteristics

CharacteristicTreatment (Fludarabine, Busulfan, Allogeneic PBSC)
Age, Continuous65 years
Ethnicity (NIH/OMB)
Hispanic or Latino
3 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
102 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
9 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
1 Participants
Race (NIH/OMB)
Black or African American
3 Participants
Race (NIH/OMB)
More than one race
1 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
4 Participants
Race (NIH/OMB)
White
105 Participants
Region of Enrollment
United States
114 participants
Sex: Female, Male
Female
43 Participants
Sex: Female, Male
Male
71 Participants
Transplant Donor Type
Matched related donor
55 participants
Transplant Donor Type
Matched unrelated donor
59 participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
— / —
other
Total, other adverse events
109 / 114
serious
Total, serious adverse events
38 / 114

Outcome results

Primary

2 Year Disease Free Survival In Unrelated Donor Recipient Group

Percentage of participants who were alive and relapse free at 2 years for patients who were matched with an unrelated donor for transplant. The 2 year disease free survival, with 95% confidence interval, was estimated using the Kaplan Meier method. A relapse is defined as any of the following: * Reappearance of leukemia blasts cells in peripheral blood * \>5% blasts in the marrow, not attributable to another cause (e.g., bone marrow regeneration) * If there are no circulating blasts, but the marrow contains 5-20% blasts, a repeat bone marrow ≥ 1 week later with \>5% blasts is necessary to meet the criteria for relapse * The development of extramedullary leukemia or leukemic cells in the cerebral spinal fluid

Time frame: 2 years

Population: Participants who received a matched unrelated donor were included in this analysis.

ArmMeasureValue (NUMBER)
Treatment (Fludarabine, Busulfan, Allogeneic PBSC)2 Year Disease Free Survival In Unrelated Donor Recipient Group40 percentage of participants
Secondary

2 Year DFS for All Patients

Percentage of participants who were alive and relapse free at 2 years for all patients. The 2 year disease free survival, with 95% confidence interval, was estimated using the Kaplan Meier method.

Time frame: Up to 2 years

ArmMeasureValue (NUMBER)
Treatment (Fludarabine, Busulfan, Allogeneic PBSC)2 Year DFS for All Patients42 percentage of participants
Secondary

Non-relapse Mortality (NRM)

Percentage of patients who died due to causes other than relapse

Time frame: Up to 5 years

ArmMeasureValue (NUMBER)
Treatment (Fludarabine, Busulfan, Allogeneic PBSC)Non-relapse Mortality (NRM)16 percentage of patients

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026