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Early Allogeneic Hematopoietic Cell Transplantation in Treating Patients With Relapsed or Refractory High-Grade Myeloid Neoplasms

A Feasibility Study of Early Allogeneic Hematopoietic Cell Transplantation for Relapsed or Refractory High-Grade Myeloid Neoplasms

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02756572
Enrollment
30
Registered
2016-04-29
Start date
2016-09-22
Completion date
2020-07-01
Last updated
2021-11-08

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

Conditions

Blasts 10 Percent or More of Bone Marrow Nucleated Cells, Chronic Myelomonocytic Leukemia-2, High Grade Malignant Neoplasm, Myelodysplastic Syndrome, Myelodysplastic Syndrome With Excess Blasts-2, Myeloid Neoplasm, Previously Treated Myelodysplastic Syndrome, Recurrent Acute Myeloid Leukemia, Refractory Acute Myeloid Leukemia

Brief summary

This clinical trial studies how well early stem cell transplantation works in treating patients with high-grade myeloid neoplasms that has come back after a period of improvement or does not respond to treatment. Drugs used in chemotherapy, such as filgrastim, cladribine, cytarabine and mitoxantrone hydrochloride, work in different ways to stop the growth of cancer cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving chemotherapy before a donor peripheral blood cell transplant helps stop the growth of cells in the bone marrow, including normal blood-forming cells (stem cells) and cancer 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 also replace the patient's immune cells and help destroy any remaining cancer cells. Early stem cell transplantation may result in more successful treatment for patients with high-grade myeloid neoplasms.

Detailed description

OUTLINE: RE-INDUCTION CHEMOTHERAPY: Patients receive filgrastim subcutaneously (SC) on days 0-5, mitoxantrone hydrochloride intravenously (IV) over 60 minutes on days 1-3, cladribine IV over 2 hours on days 1-5, and cytarabine IV over 2 hours on days 1-5. CONDITIONING REGIMEN: Beginning 14-60 days after re-induction chemotherapy, patients receive fludarabine phosphate IV over 30 minutes on days -6 to -2, melphalan IV on days -3 to -2, cyclosporine orally (PO) twice daily (BID) starting on day -3. Sirolimus PO BID starting on day -3 will be given to patients who have matched unrelated donors or mismatched unrelated donors. Patients \>55 years or with significant co-morbidities will only receive melphalan IV on day -2 and will also receive total body irradiation (TBI) on day -1 or day 0. EARLY TRANSPLANT: Patients undergo allogeneic HCT after conditioning regimen on day 0. GVHD PROPHYLAXIS: Patients with matched donors will receive mycophenolate mofetil PO three times daily (TID) on days 0-30, then twice a day (BID) until day 40; and cyclosporine PO BID on days -3 to 96, with a taper until day 150. Patients with matched unrelated donors also receive sirolimus PO BID on days -3 to 150, with a taper until day 180. Patients with mismatched unrelated donors will receive mycophenolate mofetil PO TID on days 0-30, then BID until day 100, with a taper until day 150; cyclosporine PO BID on days -3 to 150, then taper until day 180; and sirolimus BID PO days -3 to 180, then a taper until day 365. After completion of study treatment, patients are followed up periodically.

Interventions

DRUGCyclosporine

Given PO

DRUGCytarabine

Given IV

BIOLOGICALFilgrastim

Given SC

DRUGFludarabine Phosphate
PROCEDUREAllogeneic Hematopoietic Stem Cell Transplantation

Undergo allogeneic hematopoietic stem cell transplantation

OTHERLaboratory Biomarker Analysis

Correlative studies

DRUGCladribine

Given IV

DRUGMelphalan

Given IV

DRUGMitoxantrone Hydrochloride

Given IV

DRUGMycophenolate Mofetil

Given PO

OTHERQuestionnaire Administration

Ancillary studies

DRUGSirolimus

Given PO

RADIATIONTotal-Body Irradiation

Undergo TBI

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
University of Washington
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

INCLUSION CRITERIA (ENROLLMENT) * Relapsed or refractory high-grade myeloid neoplasms, defined as having a blast count of \>= 10% blasts at initial diagnosis; examples include excess blasts (EB)-2, with \>= 10% blasts at initial diagnosis, acute myeloid leukemia (AML) or chronic myelomonocytic leukemia (CMML-2); standard definitions of relapse will apply (i.e., characterized by \>= 5% abnormal blasts or blast equivalents as assessed by multiparameter flow cytometry or morphologic examination; peripheral blood blasts or blast equivalents; or extramedullary granulocytic sarcoma, per European LeukemiaNet \[ELN\] 2017 guidelines); bone marrow aspirate/biopsy will be accepted if performed outside University of Washington/Fred Hutchinson Cancer Research Center (UW/FHCRC); determination of disease status should occur within 30 days of signing informed consent * R/R high-grade myeloid neoplasm following intensive induction chemotherapy; relapsed high-grade myeloid neoplasm: patients will be classified as relapsed if they have \>= 5% blasts after being in a complete remission (CR) following treatment for high-grade myeloid neoplasm; refractory high-grade myeloid neoplasm: patients may be classified as refractory if they have received at least one prior cycle of induction chemotherapy, whether with cladribine cytarabine mitoxantrone (GCLAM) or another regimen \*\* Patients may have received up to two courses of intensive induction chemotherapy during initial treatment prior to enrollment on this protocol; for example, patients who have received two courses of granulocyte colony stimulating factor (G-CSF) GCLAM (or similar) chemotherapy, with most recent high-dose cytarabine-containing chemotherapy \> 6 months ago and CR lasting \> 6 months, will be eligible for this protocol; regimens similar to GCLAM would include cytarabine at doses of 1g/m\^2 for at least 5 doses; examples of regimens similar to GCLAM would be GCLA, fludarabine cytarabine granulocyte (FLAG), and FLAG-idarubicin (ida); however, patients who received more than two courses of GCLAM (or similar) chemotherapy, or patients who received two courses of GCLAM and had CR lasting \< 6 months, would not be eligible * R/R high-grade myeloid neoplasm following less intensive induction chemotherapy. Patients who have received at least three cycles of treatment with a hypomethylating agent (HMA; such as azacitidine or decitabine) and still have \>= 10% blasts will be eligible for the study (they will be considered refractory); similarly, patients who have received three or more cycles of HMA therapy who have had a response (e.g., achieving CR with \< 5% blasts), but who then progress using standard definitions of relapse, will also be eligible (they will be considered relapsed) * Potentially eligible for reduced intensity conditioning based on known organ function (formal organ function testing may occur after consent) * Caregiver capable of providing post-HCT care * Written informed consent INCLUSION CRITERIA (TRANSPLANT) * Identified donor (see DONOR SELECTION below for further details) * Matched related or unrelated (one allele mismatch in HLA-A, B, or C OK) donor according to institutional standards * Unrelated volunteer donor who is mismatched with the recipient (i.e. 9/10 match) * Caregiver capable of providing post-HCT care, who will be present once induction therapy with filgrastim, cladribine, cytarabine, mitoxantrone hydrochloride (GCLAM) begins * Written informed consent for transplant * Either bone marrow or peripheral blood is allowed

Design outcomes

Primary

MeasureTime frameDescription
Feasibility of Early Allogeneic Hematopoietic Cell Transplant Assessed by Enrollment and Incidence of Early TransplantUp to 60 days after start of chemotherapySuccess will be defined as enrollment of at least 30 patients with transplants occurring in 15 of these 30 (50%) within 60 days of enrollment or start of induction chemotherapy with G-CLAM, whichever is earlier.
Feasibility of Early Allogeneic Hematopoietic Cell Transplant Assessed by Relapsed-free Survival 6 Months After Transplant6 months after early allogeneic HCT on studySuccess will be defined as observing a 40% of higher 6-month relapse-free survival among patients who received early transplant on study.

Secondary

MeasureTime frameDescription
Response Assessments After Early Allogeneic Hematopoietic Cell Transplant, Day 84Approximately 84 days after early allogeneic HCTComplete Remission (CR), defined as \<5% blasts in bone marrow with hematologic recovery (ANC\>1000/ul and platelets \>100,000/ml). CRi, defined as complete remission with insufficient hematologic recovery (ANC\<1000/ul or platelets\<100,000/ul). CRp, defined as complete remission but platelets \<100,000/ul. Minimal residual disease (MRD), defined as any detectable disease by flow cytometry, cytogenetics, FISH or PCR in a patient otherwise fulfilling remission criteria. Morphologic leukemia-free state (MLFS), defined as \<5% blasts in bone marrow with no hematologic recovery. Relapse, defined as \>5% blasts in bone marrow, flow cytometry, or manual differential; OR treatment for active relapsed disease.
Relapse-free Survival (RFS) Among Patients Who Received Early TransplantUp to 100 days post-transplantRelapse-free survival among patients who received early allogeneic HCT on study as estimated with the Kaplan-Meier method.
Event-free Survival (EFS) Among Patients Who Received Early TransplantUp to 100 days post-transplantEvent-free survival among patients who received early allogeneic HCT on study as estimated with the Kaplan-Meier method. Events included death, relapse, and grade 3-4 acute graft vs host disease.
Overall Survival (OS) Among Patients Who Did Not Receive Early TransplantUp to 100 days after induction day 1Overall survival among patients who did not receive early allogeneic HCT on study as estimated with the Kaplan-Meier method.
Acute Graft Versus Host Disease Among Patients Who Received Early TransplantAt day 100Acute graft versus host disease (graded II, III, or IV) among patients who received early allogeneic HCT on study.
Overall Survival (OS) Among Patients Who Received Early Transplant.Up to 100 days post-transplantOverall survival among patients who received early allogeneic HCT on study as estimated with the Kaplan-Meier method.
Factors That Distinguish Patients Who Received Early Transplant From Those Who Did Not - TREATMENT RELATED MORTALITYFrom time of subject's study enrollment to time of subject's feasibility success assessment (i.e. when subject received transplant within 60 days or when it was determined subject would not proceed with transplant on study)Patients who receive early transplant will be compared to those that don't using the Wilcoxon rank sum test for the quantitative variable of treatment-related mortality (TRM). This outcome measure is intended to report a predicted TRM score assessed at the time of feasibility evaluation. The TRM score is used to measure treatment-related mortality, or likelihood of death within 28 days of initiation of induction chemotherapy for patients with AML. The score is normalized from 0 to 100, so that a score of 0 demonstrates the patient has a very low likelihood of TRM and a score of 100 a very high likelihood of death. A calculation is used to predict TRM using age, performance status, if they have secondary AML, albumin, creatinine, platelet count, white blood cell count, and peripheral blood blast percentage. The higher the TRM score, the higher the risk of TRM. Calculator and table of relationship between TRM score and TRM probability found here: https://trmcalculator.fredhutch.org/.
Factors That Distinguish Patients Who Received Early Transplant From Those Who Did Not - GENDERFrom time of subject's study enrollment to time of subject's feasibility success assessment (i.e. when subject received transplant within 60 days or when it was determined subject would not proceed with transplant on study)Patients who receive early transplant will be compared to those that don't using the Fisher's exact test for the categorical variables of gender.
Factors That Distinguish Patients Who Received Early Transplant From Those Who Did Not - AGEFrom time of subject's study enrollment to time of subject's feasibility success assessment (i.e. when subject received transplant within 60 days or when it was determined subject would not proceed with transplant on study)Patients who receive early transplant will be compared to those that don't using the Wilcoxon rank sum test for the quantitative variable of age.
Demonstrate the Feasibility of Collecting Patient-reported Outcomes for Trial ParticipantsUp to 12 months post-HCTThe amount of returned patient-reported outcome questionnaires will be summarized for each collection timepoint using percent collection from surviving patients for PRO timepoints.
Demonstrate the Feasibility of Collecting Resource Utilization Data for Trial ParticipantsWithin the first year of induction chemotherapy on studyThe amount of days of hospitalization (the major driver of costs within the first year) will be collected for resource utilization.
Treatment Related Mortality Among Patients Who Received Early Transplant vs Patients Who Did Not Receive Early TransplantAt day 100Treatment related mortality calculated among patients who received early allogeneic HCT on study vs patients who did not receive early transplant on study.
Response Assessments After Early Allogeneic Hematopoietic Cell Transplant, Day 28Approximately 28 days after early allogeneic HCTComplete Remission (CR), defined as \<5% blasts in bone marrow with hematologic recovery (ANC\>1000/ul and platelets \>100,000/ml). CRi, defined as complete remission with insufficient hematologic recovery (ANC\<1000/ul or platelets\<100,000/ul). CRp, defined as complete remission but platelets \<100,000/ul. Minimal residual disease (MRD), defined as any detectable disease by flow cytometry, cytogenetics, FISH or PCR in a patient otherwise fulfilling remission criteria. Morphologic leukemia-free state (MLFS), defined as \<5% blasts in bone marrow with no hematologic recovery. Relapse, defined as \>5% blasts in bone marrow, flow cytometry, or manual differential; OR treatment for active relapsed disease.

Countries

United States

Participant flow

Participants by arm

ArmCount
Treatment (Chemotherapy, HCT)
All patients enrolled received bridge chemotherapy prior to anticipated allogeneic hematopoietic cell transplantation (HCT). Patients received G-CLAM chemotherapy (consisting of G-CSF, mitoxantrone, cladribine, and cytarabine). HCT conditioning consisted of fludarabine and melphalan, with total body irradiation for patients over age 55 or with significant co-morbidities. HCT was to be received within 60 days of starting G-CLAM chemotherapy.
30
Total30

Baseline characteristics

CharacteristicTreatment (Chemotherapy, HCT)
Age, Customized56.5 years
Disease Status
Refractory
14 Participants
Disease Status
Relapsed
16 Participants
Duration of First Complete Remission2 Months
ELN 2017 Risk Stratification
Adverse
15 Participants
ELN 2017 Risk Stratification
Favorable
5 Participants
ELN 2017 Risk Stratification
Intermediate
10 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
3 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
27 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
High-Grade Myeloid Diagnosis
Acute myeloid leukemia (AML)
29 Participants
High-Grade Myeloid Diagnosis
Myelodysplastic syndrome excess blasts 2 (MDS EB-2)
1 Participants
Prior Lines of Therapy2 Number of prior treatment regimens
Race (NIH/OMB)
American Indian or Alaska Native
2 Participants
Race (NIH/OMB)
Asian
1 Participants
Race (NIH/OMB)
Black or African American
0 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
1 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
26 Participants
Region of Enrollment
United States
30 Participants
Sex/Gender, Customized
Female
18 Participants
Sex/Gender, Customized
Male
12 Participants
Treatment Related Mortality Score2.33 units on a scale (0-100)

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
5 / 302 / 9
other
Total, other adverse events
0 / 00 / 0
serious
Total, serious adverse events
30 / 309 / 9

Outcome results

Primary

Feasibility of Early Allogeneic Hematopoietic Cell Transplant Assessed by Enrollment and Incidence of Early Transplant

Success will be defined as enrollment of at least 30 patients with transplants occurring in 15 of these 30 (50%) within 60 days of enrollment or start of induction chemotherapy with G-CLAM, whichever is earlier.

Time frame: Up to 60 days after start of chemotherapy

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Treatment (Chemotherapy, HCT)Feasibility of Early Allogeneic Hematopoietic Cell Transplant Assessed by Enrollment and Incidence of Early TransplantReceived allogeneic HCT on study within 60 days (feasibility success)9 Participants
Treatment (Chemotherapy, HCT)Feasibility of Early Allogeneic Hematopoietic Cell Transplant Assessed by Enrollment and Incidence of Early TransplantDid not receive allogeneic HCT on study within 60 days (feasibility failure)21 Participants
Primary

Feasibility of Early Allogeneic Hematopoietic Cell Transplant Assessed by Relapsed-free Survival 6 Months After Transplant

Success will be defined as observing a 40% of higher 6-month relapse-free survival among patients who received early transplant on study.

Time frame: 6 months after early allogeneic HCT on study

Population: Nine subjects received allogeneic HCT on study, however one subject died shortly after HCT and was not including in this analysis.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Treatment (Chemotherapy, HCT)Feasibility of Early Allogeneic Hematopoietic Cell Transplant Assessed by Relapsed-free Survival 6 Months After TransplantNo relapse within 6 months post-HCT (feasibility success)6 Participants
Treatment (Chemotherapy, HCT)Feasibility of Early Allogeneic Hematopoietic Cell Transplant Assessed by Relapsed-free Survival 6 Months After TransplantRelapse within 6 months post-HCT (feasibility failure)2 Participants
Secondary

Acute Graft Versus Host Disease Among Patients Who Received Early Transplant

Acute graft versus host disease (graded II, III, or IV) among patients who received early allogeneic HCT on study.

Time frame: At day 100

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Treatment (Chemotherapy, HCT)Acute Graft Versus Host Disease Among Patients Who Received Early Transplant0 Participants
Secondary

Demonstrate the Feasibility of Collecting Patient-reported Outcomes for Trial Participants

The amount of returned patient-reported outcome questionnaires will be summarized for each collection timepoint using percent collection from surviving patients for PRO timepoints.

Time frame: Up to 12 months post-HCT

Population: The number analyzed in each of the rows below represent the patients alive at that timepoint who were due to complete a survey.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Treatment (Chemotherapy, HCT)Demonstrate the Feasibility of Collecting Patient-reported Outcomes for Trial ParticipantsEnrollment PROs returned27 Participants
Treatment (Chemotherapy, HCT)Demonstrate the Feasibility of Collecting Patient-reported Outcomes for Trial ParticipantsPost G-CLAM PROs returned23 Participants
Treatment (Chemotherapy, HCT)Demonstrate the Feasibility of Collecting Patient-reported Outcomes for Trial ParticipantsPre-HCT PROs returned8 Participants
Treatment (Chemotherapy, HCT)Demonstrate the Feasibility of Collecting Patient-reported Outcomes for Trial Participants6 months post-HCT PROs returned4 Participants
Treatment (Chemotherapy, HCT)Demonstrate the Feasibility of Collecting Patient-reported Outcomes for Trial Participants12 months post-HCT PROs returned3 Participants
Secondary

Demonstrate the Feasibility of Collecting Resource Utilization Data for Trial Participants

The amount of days of hospitalization (the major driver of costs within the first year) will be collected for resource utilization.

Time frame: Within the first year of induction chemotherapy on study

ArmMeasureValue (MEDIAN)
Treatment (Chemotherapy, HCT)Demonstrate the Feasibility of Collecting Resource Utilization Data for Trial Participants49 days
Secondary

Event-free Survival (EFS) Among Patients Who Received Early Transplant

Event-free survival among patients who received early allogeneic HCT on study as estimated with the Kaplan-Meier method. Events included death, relapse, and grade 3-4 acute graft vs host disease.

Time frame: Up to 100 days post-transplant

ArmMeasureValue (NUMBER)
Treatment (Chemotherapy, HCT)Event-free Survival (EFS) Among Patients Who Received Early Transplant91 Percentage of participants
Secondary

Event-free Survival (EFS) Among Patients Who Received Early Transplant

Event-free survival among patients who received early allogeneic HCT on study as estimated with the Kaplan-Meier method. Events included death, relapse, and grade 3-4 acute graft vs host disease.

Time frame: Up to 6 months post-transplant

ArmMeasureValue (NUMBER)
Treatment (Chemotherapy, HCT)Event-free Survival (EFS) Among Patients Who Received Early Transplant82 Percentage of participants
Secondary

Factors That Distinguish Patients Who Received Early Transplant From Those Who Did Not - AGE

Patients who receive early transplant will be compared to those that don't using the Wilcoxon rank sum test for the quantitative variable of age.

Time frame: From time of subject's study enrollment to time of subject's feasibility success assessment (i.e. when subject received transplant within 60 days or when it was determined subject would not proceed with transplant on study)

ArmMeasureValue (MEDIAN)
Treatment (Chemotherapy, HCT)Factors That Distinguish Patients Who Received Early Transplant From Those Who Did Not - AGE55 years
Did Not Receive Allogeneic HCT on StudyFactors That Distinguish Patients Who Received Early Transplant From Those Who Did Not - AGE57 years
p-value: 0.77Wilcoxon (Mann-Whitney)
Secondary

Factors That Distinguish Patients Who Received Early Transplant From Those Who Did Not - GENDER

Patients who receive early transplant will be compared to those that don't using the Fisher's exact test for the categorical variables of gender.

Time frame: From time of subject's study enrollment to time of subject's feasibility success assessment (i.e. when subject received transplant within 60 days or when it was determined subject would not proceed with transplant on study)

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Treatment (Chemotherapy, HCT)Factors That Distinguish Patients Who Received Early Transplant From Those Who Did Not - GENDERMale1 Participants
Treatment (Chemotherapy, HCT)Factors That Distinguish Patients Who Received Early Transplant From Those Who Did Not - GENDERFemale8 Participants
Did Not Receive Allogeneic HCT on StudyFactors That Distinguish Patients Who Received Early Transplant From Those Who Did Not - GENDERMale11 Participants
Did Not Receive Allogeneic HCT on StudyFactors That Distinguish Patients Who Received Early Transplant From Those Who Did Not - GENDERFemale10 Participants
p-value: 0.049Fisher Exact
Secondary

Factors That Distinguish Patients Who Received Early Transplant From Those Who Did Not - TREATMENT RELATED MORTALITY

Patients who receive early transplant will be compared to those that don't using the Wilcoxon rank sum test for the quantitative variable of treatment-related mortality (TRM). This outcome measure is intended to report a predicted TRM score assessed at the time of feasibility evaluation. The TRM score is used to measure treatment-related mortality, or likelihood of death within 28 days of initiation of induction chemotherapy for patients with AML. The score is normalized from 0 to 100, so that a score of 0 demonstrates the patient has a very low likelihood of TRM and a score of 100 a very high likelihood of death. A calculation is used to predict TRM using age, performance status, if they have secondary AML, albumin, creatinine, platelet count, white blood cell count, and peripheral blood blast percentage. The higher the TRM score, the higher the risk of TRM. Calculator and table of relationship between TRM score and TRM probability found here: https://trmcalculator.fredhutch.org/.

Time frame: From time of subject's study enrollment to time of subject's feasibility success assessment (i.e. when subject received transplant within 60 days or when it was determined subject would not proceed with transplant on study)

Population: Only 18 of the 21 patients who did not receive an allogeneic hematopoietic peripheral blood stem cell within 60 days of bridge chemotherapy on study were analyzed.

ArmMeasureValue (MEDIAN)
Treatment (Chemotherapy, HCT)Factors That Distinguish Patients Who Received Early Transplant From Those Who Did Not - TREATMENT RELATED MORTALITY2.15 units on a scale
Did Not Receive Allogeneic HCT on StudyFactors That Distinguish Patients Who Received Early Transplant From Those Who Did Not - TREATMENT RELATED MORTALITY3.045 units on a scale
p-value: 0.18Wilcoxon (Mann-Whitney)
Secondary

Overall Survival (OS) Among Patients Who Did Not Receive Early Transplant

Overall survival among patients who did not receive early allogeneic HCT on study as estimated with the Kaplan-Meier method.

Time frame: Up to 6 months after induction day 1

ArmMeasureValue (NUMBER)
Treatment (Chemotherapy, HCT)Overall Survival (OS) Among Patients Who Did Not Receive Early Transplant62 Percentage of participants
Secondary

Overall Survival (OS) Among Patients Who Did Not Receive Early Transplant

Overall survival among patients who did not receive early allogeneic HCT on study as estimated with the Kaplan-Meier method.

Time frame: Up to 100 days after induction day 1

ArmMeasureValue (NUMBER)
Treatment (Chemotherapy, HCT)Overall Survival (OS) Among Patients Who Did Not Receive Early Transplant75 Percentage of participants
Secondary

Overall Survival (OS) Among Patients Who Received Early Transplant.

Overall survival among patients who received early allogeneic HCT on study as estimated with the Kaplan-Meier method.

Time frame: Up to 6 months post-transplant

ArmMeasureValue (NUMBER)
Treatment (Chemotherapy, HCT)Overall Survival (OS) Among Patients Who Received Early Transplant.82 Percentage of participants
Secondary

Overall Survival (OS) Among Patients Who Received Early Transplant.

Overall survival among patients who received early allogeneic HCT on study as estimated with the Kaplan-Meier method.

Time frame: Up to 100 days post-transplant

ArmMeasureValue (NUMBER)
Treatment (Chemotherapy, HCT)Overall Survival (OS) Among Patients Who Received Early Transplant.91 Percentage of participants
Secondary

Relapse-free Survival (RFS) Among Patients Who Received Early Transplant

Relapse-free survival among patients who received early allogeneic HCT on study as estimated with the Kaplan-Meier method.

Time frame: Up to 6 months post-transplant

ArmMeasureValue (NUMBER)
Treatment (Chemotherapy, HCT)Relapse-free Survival (RFS) Among Patients Who Received Early Transplant82 Percentage of participants
Secondary

Relapse-free Survival (RFS) Among Patients Who Received Early Transplant

Relapse-free survival among patients who received early allogeneic HCT on study as estimated with the Kaplan-Meier method.

Time frame: Up to 100 days post-transplant

ArmMeasureValue (NUMBER)
Treatment (Chemotherapy, HCT)Relapse-free Survival (RFS) Among Patients Who Received Early Transplant91 Percentage of participants
Secondary

Response Assessments After Early Allogeneic Hematopoietic Cell Transplant, Day 28

Complete Remission (CR), defined as \<5% blasts in bone marrow with hematologic recovery (ANC\>1000/ul and platelets \>100,000/ml). CRi, defined as complete remission with insufficient hematologic recovery (ANC\<1000/ul or platelets\<100,000/ul). CRp, defined as complete remission but platelets \<100,000/ul. Minimal residual disease (MRD), defined as any detectable disease by flow cytometry, cytogenetics, FISH or PCR in a patient otherwise fulfilling remission criteria. Morphologic leukemia-free state (MLFS), defined as \<5% blasts in bone marrow with no hematologic recovery. Relapse, defined as \>5% blasts in bone marrow, flow cytometry, or manual differential; OR treatment for active relapsed disease.

Time frame: Approximately 28 days after early allogeneic HCT

Population: Nine subjects received allogeneic HCT on study, however one subject died shortly after HCT and was not including in this analysis.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Treatment (Chemotherapy, HCT)Response Assessments After Early Allogeneic Hematopoietic Cell Transplant, Day 28CR with MRD0 Participants
Treatment (Chemotherapy, HCT)Response Assessments After Early Allogeneic Hematopoietic Cell Transplant, Day 28CR without MRD7 Participants
Treatment (Chemotherapy, HCT)Response Assessments After Early Allogeneic Hematopoietic Cell Transplant, Day 28CRi with MRD0 Participants
Treatment (Chemotherapy, HCT)Response Assessments After Early Allogeneic Hematopoietic Cell Transplant, Day 28CRi without MRD1 Participants
Treatment (Chemotherapy, HCT)Response Assessments After Early Allogeneic Hematopoietic Cell Transplant, Day 28MLFS with MRD0 Participants
Treatment (Chemotherapy, HCT)Response Assessments After Early Allogeneic Hematopoietic Cell Transplant, Day 28MLFS without MRD0 Participants
Treatment (Chemotherapy, HCT)Response Assessments After Early Allogeneic Hematopoietic Cell Transplant, Day 28Relapse0 Participants
Secondary

Response Assessments After Early Allogeneic Hematopoietic Cell Transplant, Day 84

Complete Remission (CR), defined as \<5% blasts in bone marrow with hematologic recovery (ANC\>1000/ul and platelets \>100,000/ml). CRi, defined as complete remission with insufficient hematologic recovery (ANC\<1000/ul or platelets\<100,000/ul). CRp, defined as complete remission but platelets \<100,000/ul. Minimal residual disease (MRD), defined as any detectable disease by flow cytometry, cytogenetics, FISH or PCR in a patient otherwise fulfilling remission criteria. Morphologic leukemia-free state (MLFS), defined as \<5% blasts in bone marrow with no hematologic recovery. Relapse, defined as \>5% blasts in bone marrow, flow cytometry, or manual differential; OR treatment for active relapsed disease.

Time frame: Approximately 84 days after early allogeneic HCT

Population: Nine subjects received allogeneic HCT on study, however one subject died shortly after HCT and was not included in this analysis.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Treatment (Chemotherapy, HCT)Response Assessments After Early Allogeneic Hematopoietic Cell Transplant, Day 84CR with MRD0 Participants
Treatment (Chemotherapy, HCT)Response Assessments After Early Allogeneic Hematopoietic Cell Transplant, Day 84CR without MRD4 Participants
Treatment (Chemotherapy, HCT)Response Assessments After Early Allogeneic Hematopoietic Cell Transplant, Day 84CRi with MRD0 Participants
Treatment (Chemotherapy, HCT)Response Assessments After Early Allogeneic Hematopoietic Cell Transplant, Day 84CRi without MRD2 Participants
Treatment (Chemotherapy, HCT)Response Assessments After Early Allogeneic Hematopoietic Cell Transplant, Day 84MLFS with MRD0 Participants
Treatment (Chemotherapy, HCT)Response Assessments After Early Allogeneic Hematopoietic Cell Transplant, Day 84MLFS without MRD0 Participants
Treatment (Chemotherapy, HCT)Response Assessments After Early Allogeneic Hematopoietic Cell Transplant, Day 84Relapse2 Participants
Secondary

Treatment Related Mortality Among Patients Who Received Early Transplant vs Patients Who Did Not Receive Early Transplant

Treatment related mortality calculated among patients who received early allogeneic HCT on study vs patients who did not receive early transplant on study.

Time frame: At day 100

ArmMeasureValue (NUMBER)
Treatment (Chemotherapy, HCT)Treatment Related Mortality Among Patients Who Received Early Transplant vs Patients Who Did Not Receive Early Transplant9 Percentage of participants
Did Not Receive Allogeneic HCT on StudyTreatment Related Mortality Among Patients Who Received Early Transplant vs Patients Who Did Not Receive Early Transplant23.8 Percentage of participants
p-value: 0.18Wilcoxon (Mann-Whitney)

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