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Treo/Flu/TBI With Donor Stem Cell Transplant for Patients With Myelodysplastic Syndrome or Acute Myeloid Leukemia

A Randomized Phase II Study of Treosulfan, Fludarabine and Low-Dose TBI as Conditioning for Allogeneic Hematopoietic Cell Transplantation in Patients With Myelodysplastic Syndrome (MDS) or Acute Myeloid Leukemia (AML)

Status
UNKNOWN
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01894477
Enrollment
102
Registered
2013-07-10
Start date
2013-11-30
Completion date
2022-06-30
Last updated
2021-06-03

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

Conditions

Acute Myeloid Leukemia in Remission, Chronic Myelomonocytic Leukemia, Minimal Residual Disease, Myelodysplastic/Myeloproliferative Neoplasm, Myelodysplastic/Myeloproliferative Neoplasm, Unclassifiable, Myelodysplastic Syndrome

Brief summary

This randomized phase II trial studies how well treosulfan and fludarabine phosphate, with or without total body irradiation before donor stem cell transplant works in treating patients with myelodysplastic syndrome or acute myeloid leukemia. Giving chemotherapy, such as treosulfan and fludarabine phosphate, and total-body irradiation before a donor stem cell transplant helps stop the growth of cancer cells. It may also stop 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 tacrolimus before and mycophenolate mofetil after the transplant may stop this from happening.

Detailed description

PRIMARY OBJECTIVES: I. To determine the better of two treosulfan-based conditioning regimens in patients with myelodysplastic syndrome (MDS) and acute myeloid leukemia (AML), by comparing 6-month progression-free survival. SECONDARY OBJECTIVES: I. Determine the effects of two conditioning regimens on changes in gene expression profiles, and evaluate the association of gene expression profiles and disease relapse. II. Determine the incidence of progression-free survival at 1 year and 2 years after hematopoietic cell transplantation (HCT). III. Evaluate overall survival (OS) at 6 months, at 1 year and at 2 years after HCT. IV. Determine the incidence of grades II-IV acute graft-versus-host disease (GVHD). V. Determine the incidence of chronic GVHD. VI. Determine donor chimerism around days +28 and +84. CONDITIONING REGIMEN: Arm A: Patients receive treosulfan intravenously (IV) over 2 hours on days -6 to -4 and fludarabine phosphate IV over 30 minutes on days -6 to -2. Arm B: Patients receive treosulfan and fludarabine phosphate as in Arm A and undergo low-dose total-body irradiation (TBI) on day 0. TRANSPLANT: Patients in both arms undergo allogeneic peripheral blood stem cell (PBSC) transplant or bone marrow transplant on day 0. GVHD PROPHYLAXIS: Patients with a related donor receive tacrolimus orally (PO) every 8 or 12 hours on days -3 to 56 with taper to day 180. Beginning 4-6 hours after PBSC infusion, patients also receive mycophenolate mofetil PO every 12 hours to day 28. Patients with an unrelated donor receive tacrolimus PO every 8 or 12 hours on days -3 to 100 with taper to day 180. Beginning 4-6 hours after PBSC infusion, patients also receive mycophenolate mofetil PO every 8 hours to day 40 with taper to day 96. NOTE: Patients with related donors eligible for FHCRC protocol 2545 may receive cyclosporine IV, instead of tacrolimus, beginning on day -3 to day 50 with a taper to day 180. After completion of study treatment, patients are followed up periodically.

Interventions

PROCEDUREAllogeneic Bone Marrow Transplantation

Undergo allogeneic bone marrow transplant

DRUGFludarabine Phosphate

Intravenously administered Fludarabine Phosphate

PROCEDUREPeripheral Blood Stem Cell Transplantation

Undergo allogeneic PBSC transplant

RADIATIONTotal-Body Irradiation

Undergo TBI

DRUGTreosulfan

Intravenously administered Treosulfan

OTHERLaboratory Biomarker Analysis

Correlative Studies

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
National Heart, Lung, and Blood Institute (NHLBI)
CollaboratorNIH
Fred Hutchinson Cancer Center
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
No minimum to 70 Years
Healthy volunteers
No

Inclusion criteria

* MDS, myelodysplastic syndrome/myeloproliferative neoplasia overlap disorders (including chronic myelomonocytic leukemia \[CMML\], and MDS/myeloproliferative neoplasm \[MPN\] unclassifiable syndromes) * AML, other than acute promyelocytic leukemia (APL), in first or second remission or with minimal residual disease * With Karnofsky index or Lansky Play-Performance scale \> 70% on pre-transplant evaluation * Able to give informed consent (if \> 18 years), or with a legal guardian capable of giving informed consent (if \< 18 years) * Patients with previous autologous or allogeneic HCT are allowed to enroll * DONOR: Human leukocyte antigen (HLA)-identical related donors or * DONOR: Unrelated donors matched for HLA-A, B, C, DRB1, and DQB1 as defined by high resolution deoxyribonucleic acid (DNA) typing; mismatch for one HLA allele is allowed * DONOR: Donors able to undergo peripheral blood stem cell collection or bone marrow harvest * DONOR: Donors in good general health, with a Karnofsky or Lansky play performance score \> 90% * DONOR: Donors able to give informed consent (if \> 18 years), or with a legal guardian capable of giving informed consent (if \< 18 years)

Exclusion criteria

* Receiving umbilical cord blood * With impaired cardiac function as evidenced by ejection fraction \< 35% (or, if unable to obtain ejection fraction, shortening fraction of \< 26%) or cardiac insufficiency requiring treatment or symptomatic coronary artery disease; patients with a shortening fraction \< 26% may be enrolled if approved by a cardiologist * With impaired pulmonary function as evidenced by partial pressure of oxygen (pO2) \< 70 mm Hg and carbon monoxide diffusing capability test (DLCO) \< 70% of predicted or pO2 \< 80 mm Hg and DLCO \< 60% of predicted; (or, for pediatric patients unable to perform pulmonary function tests, then oxygen (O2) saturation \< 92% on room air), or receiving supplementary continuous oxygen * With impaired renal function as evidenced by creatinine-clearance \< 50% for age, weight, height or serum creatinine \> 2 x upper limit of normal or dialysis-dependent * With hepatic dysfunction as evidenced by total bilirubin \> 2.0 x upper limit of normal or evidence of synthetic dysfunction or severe cirrhosis * With hepatic dysfunction as evidenced by aspartate aminotransferase (AST) \> 2.0 x upper limit of normal or evidence of synthetic dysfunction or severe cirrhosis * With active infectious disease requiring deferral of conditioning, as recommended by an infectious disease specialist * With human immunodeficiency virus (HIV)-positivity or active infectious hepatitis * With central nervous system (CNS) leukemic involvement not clearing with intrathecal chemotherapy, cranial irradiation or both prior to initiating conditioning (day -6) * Patients with active non-hematological malignancies (except non-melanoma skin cancers) or those with non-hematological malignancies who have been rendered with no evidence of disease, but have a greater than 20% chance of having disease recurrence within 5 years; this exclusion does not apply to patients with non-hematologic malignancies that do not require therapy * With life expectancy severely limited by diseases other than malignancy * Women who are pregnant or lactating * With known hypersensitivity to treosulfan or fludarabine (fludarabine phosphate) * Receiving another experimental drug within 4 weeks before initiation of conditioning (day -6) * Unable to give informed consent (if \> 18 years) or with a legal guardian (if \< 18 years) unable to give informed consent * DONOR: Individuals deemed unable to undergo marrow harvesting or PBSC mobilization and leukapheresis * DONOR: Individuals who are HIV-positive * DONOR: Individuals with active infectious hepatitis * DONOR: Females with a positive pregnancy test * DONOR: Persons unable to give informed consent (if \> 18 years) or with a legal guardian (if \< 18 years) unable to give informed consent

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants That Did Not Progress Within 6 MonthsAt 6 months post-transplantProgression is defined as relapse

Secondary

MeasureTime frameDescription
Number of Participants With Acute GVHD, Graded by the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) Version 4.0Up to 84 days
Incidence of Chronic GVHD Graded by the NCI CTCAE Version 4.0Up to 5 year
Incidence of Relapse/ProgressionUp to 5 year
NRMUp to 5 years
Overall Survival (OS)Up to 2 year
Change in Gene Expression ProfilesBaseline and at day 0 within 6 hours of conditioning prior to transplantDifferences between arms in the changes in gene expression will be compared. 80% power to detect mean differences of approximately 1.4 standard deviation units, at the 2-sided 0.05 level of significance (with Bonferroni correction for 50 genes).
Relapse Risk as Measured by Degree of Change in Gene Expression ProfilesBaseline and at day 0 within 6 hours of conditioning prior to transplantAmong genes identified whose expression is modified by conditioning, degree of change in expression will be evaluated to determine if it is correlated with relapse risk and offers improved prediction of relapse risk over that obtained with standard clinical parameters (cytogenetics, blast count, International Prognostic Scoring System score, minimal residual disease. To account for censoring and the competing risk of non-relapse mortality (NRM), the analysis will be a time-to-event analysis of relapse using Cox regression, with change in expression as a continuous covariate (on a log scale). 8

Countries

United States

Participant flow

Participants by arm

ArmCount
Arm A (Treosulfan, Fludarabine Phosphate)
Treosulfan IV over 2 hours on days -6 to -4 and fludarabine phosphate IV over 30 minutes on days -6 to -2.
35
Arm B (Treosulfan, Fludarabine Phosphate, TBI)
Treosulfan and fludarabine phosphate as in Arm A and undergo low-dose TBI on day 0.
65
Total100

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall Studyprotocol changed due SC changed to cord01
Overall StudyProtocol Violation01

Baseline characteristics

CharacteristicArm A (Treosulfan, Fludarabine Phosphate)TotalArm B (Treosulfan, Fludarabine Phosphate, TBI)
Age, Categorical
<=18 years
0 Participants2 Participants2 Participants
Age, Categorical
>=65 years
7 Participants17 Participants10 Participants
Age, Categorical
Between 18 and 65 years
28 Participants81 Participants53 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants2 Participants2 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
35 Participants97 Participants62 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants1 Participants1 Participants
Race (NIH/OMB)
American Indian or Alaska Native
1 Participants2 Participants1 Participants
Race (NIH/OMB)
Asian
2 Participants11 Participants9 Participants
Race (NIH/OMB)
Black or African American
0 Participants1 Participants1 Participants
Race (NIH/OMB)
More than one race
1 Participants1 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
1 Participants2 Participants1 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants1 Participants1 Participants
Race (NIH/OMB)
White
30 Participants82 Participants52 Participants
Region of Enrollment
Indonesia
0 participants1 participants1 participants
Region of Enrollment
Samoa
0 participants1 participants1 participants
Region of Enrollment
United States
35 participants98 participants63 participants
Sex: Female, Male
Female
18 Participants49 Participants31 Participants
Sex: Female, Male
Male
17 Participants51 Participants34 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
15 / 3520 / 67
other
Total, other adverse events
28 / 3551 / 67
serious
Total, serious adverse events
6 / 359 / 67

Outcome results

Primary

Number of Participants That Did Not Progress Within 6 Months

Progression is defined as relapse

Time frame: At 6 months post-transplant

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Arm A (Treosulfan, Fludarabine Phosphate)Number of Participants That Did Not Progress Within 6 Months20 Participants
Arm B (Treosulfan, Fludarabine Phosphate, TBI)Number of Participants That Did Not Progress Within 6 Months48 Participants
Secondary

Change in Gene Expression Profiles

Differences between arms in the changes in gene expression will be compared. 80% power to detect mean differences of approximately 1.4 standard deviation units, at the 2-sided 0.05 level of significance (with Bonferroni correction for 50 genes).

Time frame: Baseline and at day 0 within 6 hours of conditioning prior to transplant

Secondary

Incidence of Chronic GVHD Graded by the NCI CTCAE Version 4.0

Time frame: Up to 5 year

Secondary

Incidence of Relapse/Progression

Time frame: Up to 5 year

Secondary

NRM

Time frame: Up to 5 years

Secondary

Number of Participants With Acute GVHD, Graded by the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) Version 4.0

Time frame: Up to 84 days

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Arm A (Treosulfan, Fludarabine Phosphate)Number of Participants With Acute GVHD, Graded by the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) Version 4.029 Participants
Arm B (Treosulfan, Fludarabine Phosphate, TBI)Number of Participants With Acute GVHD, Graded by the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) Version 4.050 Participants
Secondary

Overall Survival (OS)

Time frame: Up to 2 year

Secondary

Relapse Risk as Measured by Degree of Change in Gene Expression Profiles

Among genes identified whose expression is modified by conditioning, degree of change in expression will be evaluated to determine if it is correlated with relapse risk and offers improved prediction of relapse risk over that obtained with standard clinical parameters (cytogenetics, blast count, International Prognostic Scoring System score, minimal residual disease. To account for censoring and the competing risk of non-relapse mortality (NRM), the analysis will be a time-to-event analysis of relapse using Cox regression, with change in expression as a continuous covariate (on a log scale). 8

Time frame: Baseline and at day 0 within 6 hours of conditioning prior to transplant

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