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Donor Stem Cell Transplant Followed by Cyclophosphamide in Treating Patients With Hematological Diseases

Haploidentical Stem Cell Transplant Using Post Transplant Cyclophosphamide for GvHD Prophylaxis: A Pilot Study

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02248597
Enrollment
27
Registered
2014-09-25
Start date
2015-02-25
Completion date
2023-01-18
Last updated
2023-10-11

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

Conditions

Graft Versus Host Disease, Hematopoietic/Lymphoid Cancer

Brief summary

This pilot clinical trial studies donor stem cell transplant followed by cyclophosphamide in treating patients with hematological diseases. Giving chemotherapy before a donor stem 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. Sometimes the transplanted cells from a donor can make an immune response against the body's normal cells (called graft-versus-host disease). Giving cyclophosphamide after the transplant may stop this from happening.

Detailed description

PRIMARY OBJECTIVES: I. To determine if haploidentical stem cell transplant using post-transplant cyclophosphamide results in 60% or better disease free survival (DFS) at 12 months at our institution. SECONDARY OBJECTIVES: I. To determine the rate of acute and chronic graft-versus-host disease (GvHD), non-relapse mortality, and relapse. OUTLINE: PREPARATIVE REGIMEN: Patients receive fludarabine phosphate intravenously (IV) once daily (QD) on days -6 to -2. Patients receiving myeloablative conditioning receive busulfan IV every 6 hours for 16 doses on days -7 to -4 and patients receiving reduced intensity conditioning receive busulfan IV every 6 hours for 8 doses on days -5 to -4. Patients also receive cyclophosphamide IV QD on days -3 and -2 TRANSPLANT: Patients undergo stem cell transplant on day 0. GVHD PROPHYLAXIS: Patients receive cyclophosphamide QD on days 3 and 4, tacrolimus on days 5-180, and mycophenolate mofetil on days 5-35. After completion of study treatment, patients are followed up periodically for 2 years.

Interventions

DRUGfludarabine phosphate

Given IV

DRUGbusulfan

Given IV

DRUGcyclophosphamide

Given IV

PROCEDUREallogeneic hematopoietic stem cell transplantation

Undergo myeloablative or reduced intensity allogeneic stem cell transplant

DRUGtacrolimus
DRUGmycophenolate mofetil

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
Wake Forest University Health Sciences
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 69 Years
Healthy volunteers
No

Inclusion criteria

* Diagnosis of a hematological malignancy requiring an allogeneic stem cell transplant consistent with the standard of care * Remission of any acute hematologic malignancy or adequate disease control for chronic malignancies. * Ages 18-69 years old. * Available familial haploidentical (4 to 6 out of 8 HLA loci-matched) donor

Exclusion criteria

* Significant organ dysfunction defined as: LV EF \< 50% (evaluated by echocardiogram or MRI), DLCO or FEV1 \< 65% predicted, AST/ALT \> 2.5 x ULN, Bilirubin \> 1.5 x ULN, Serum creatinine \> 2mg/dL, dialysis, or prior renal transplant * HIV positive (Recipients who are positive for hepatitis B (HBV), hepatitis C (HCV) or human T-cell lymphotropic virus (HTLV-I/II) are not excluded from participation) * Positive pregnancy test for women of childbearing age. * Major anticipated illness or organ failure incompatible with survival form transplant. * Severe psychiatric illness or mental deficiency sufficiently severe as to make compliance with the transplant treatment unlikely and informed consent impossible.

Design outcomes

Primary

MeasureTime frameDescription
12 Month Disease Free Survival ProbabilityAt 12 monthsThe percentage of patients who experience death or disease relapse by one year will be calculated and a corresponding 95% confidence interval will be constructed using the normal approximation for binomial proportions. The survival function will be estimated and plotted using the method of Kaplan and Meier.

Secondary

MeasureTime frameDescription
Progression Free SurvivalAt 12 monthsKaplan-Meier estimation of the percentage of patients who are alive without progressive disease at one year.
Rate of Acute GvHD12 monthsKaplan-Meier estimation of the rate of acute GvHD in the study population at one year with a 95% confidence interval.
Overall SurvivalAt 12 monthsThe survival function will be estimated and plotted using the method of Kaplan and Meier.
Relapse-free MortalityAt 12 monthsNon-relapse mortality will be defined as time from registration to death due to anything other than relapse of hematological malignancy. Patients who relapse will be treated as a competing risk.

Countries

United States

Participant flow

Participants by arm

ArmCount
Treatment (Stem Cell Transplant With GVHD Prophylaxis)
PREPARATIVE REGIMEN: Patients receive fludarabine phosphate IV QD on days -6 to -2. Patients receiving myeloablative conditioning receive busulfan IV every 6 hours for 16 doses on days -7 to -4 and patients receiving reduced intensity conditioning receive busulfan IV every 6 hours for 8 doses on days -5 to -4. Patients also receive cyclophosphamide IV QD on days -3 and -2 TRANSPLANT: Patients undergo stem cell transplant on day 0. GVHD PROPHYLAXIS: Patients receive cyclophosphamide QD on days 3 and 4, tacrolimus on days 5-180, and mycophenolate mofetil on days 5-35. Allogeneic hematopoietic stem cell transplantation fludarabine phosphate: Given IV busulfan: Given IV cyclophosphamide: Given IV allogeneic hematopoietic stem cell transplantation: Undergo myeloablative or reduced intensity allogeneic stem cell transplant tacrolimus mycophenolate mofetil
27
Total27

Baseline characteristics

CharacteristicTreatment (Stem Cell Transplant With GVHD Prophylaxis)
Age, Continuous53.4 years
STANDARD_DEVIATION 14.2
Ethnicity (NIH/OMB)
Hispanic or Latino
3 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
24 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
7 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
2 Participants
Race (NIH/OMB)
White
18 Participants
Region of Enrollment
United States
27 participants
Sex: Female, Male
Female
12 Participants
Sex: Female, Male
Male
15 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
13 / 27
other
Total, other adverse events
27 / 27
serious
Total, serious adverse events
27 / 27

Outcome results

Primary

12 Month Disease Free Survival Probability

The percentage of patients who experience death or disease relapse by one year will be calculated and a corresponding 95% confidence interval will be constructed using the normal approximation for binomial proportions. The survival function will be estimated and plotted using the method of Kaplan and Meier.

Time frame: At 12 months

ArmMeasureValue (NUMBER)
Treatment (Stem Cell Transplant With GVHD Prophylaxis)12 Month Disease Free Survival Probability51.8 percentage of participants
Secondary

Overall Survival

The survival function will be estimated and plotted using the method of Kaplan and Meier.

Time frame: At 12 months

ArmMeasureValue (NUMBER)
Treatment (Stem Cell Transplant With GVHD Prophylaxis)Overall Survival66.7 percentage of participants
Secondary

Progression Free Survival

Kaplan-Meier estimation of the percentage of patients who are alive without progressive disease at one year.

Time frame: At 12 months

ArmMeasureValue (NUMBER)
Treatment (Stem Cell Transplant With GVHD Prophylaxis)Progression Free Survival51.8 percentage of participants
Secondary

Rate of Acute GvHD

Kaplan-Meier estimation of the rate of acute GvHD in the study population at one year with a 95% confidence interval.

Time frame: 12 months

ArmMeasureValue (NUMBER)
Treatment (Stem Cell Transplant With GVHD Prophylaxis)Rate of Acute GvHD51.8 percentage of participants
Secondary

Relapse-free Mortality

Non-relapse mortality will be defined as time from registration to death due to anything other than relapse of hematological malignancy. Patients who relapse will be treated as a competing risk.

Time frame: At 12 months

ArmMeasureValue (MEAN)
Treatment (Stem Cell Transplant With GVHD Prophylaxis)Relapse-free Mortality86.8 days

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