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Non-Myeloablative Conditioning for Unrelated Donor Umbilical Cord Blood Transplant

Transplantation of Unrelated Donor Umbilical Cord Blood in Patients With Hematological Malignancies Using a Non-Myeloablative Preparative Regimen

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00305682
Enrollment
295
Registered
2006-03-22
Start date
2005-06-30
Completion date
2019-12-12
Last updated
2020-11-19

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

Conditions

Leukemia, Lymphoma, Myelodysplastic Syndromes, Myeloproliferative Disorders

Brief summary

RATIONALE: Drugs used in chemotherapy, such as fludarabine and cyclophosphamide, work in different ways to stop the growth of cancer cells, either by killing the cells or by stopping them from dividing. Radiation therapy uses high-energy x-rays to kill cancer cells. An umbilical cord blood transplant may be able to replace blood-forming cells that were destroyed by chemotherapy and radiation therapy. Sometimes the transplanted cells from a donor can make an immune response against the body's normal cells. Giving sirolimus and mycophenolate mofetil after the transplant may stop this from happening. PURPOSE: This phase II trial is studying how well giving fludarabine and cyclophosphamide together with total-body irradiation followed by an umbilical cord blood transplant, sirolimus, and mycophenolate mofetil works in treating patients with hematologic cancer.

Detailed description

OBJECTIVES: Primary * Determine the one- and two-year survival of patients with hematologic malignancies treated with a nonmyeloablative conditioning regimen comprising fludarabine, cyclophosphamide, and total-body irradiation followed by umbilical cord blood transplantation and post-transplant immunosuppression comprising sirolimus and mycophenolate mofetil. Secondary * Determine the six-month nonrelapse mortality of patients treated with this regimen. * Determine the presence of chimerism in patients treated with this regimen at days 21, 60, 100, 180, and 365. * Determine the incidence of neutrophil engraftment by day 42 in patients treated with this regimen. * Determine the incidence of platelet engraftment by six months in patients treated with this regimen. * Determine the incidence of grade II-IV and grade III-IV acute graft-versus-host disease (GVHD) at day 100 in patients treated with this regimen. * Determine the incidence of chronic GVHD at one year in patients treated with this regimen. * Determine the probability of overall survival within one or two years in patients treated with this regimen. * Determine the probability of progression-free survival within one or two years in patients treated with this regimen. * Determine the incidence of relapse or disease progression within one or two years in patients treated with this regimen. OUTLINE: This is a nonrandomized study. Patients are stratified into five disease groups: 1. acute myeloid leukemia, myelodysplastic syndromes, chronic myelogenous leukemia \[CML\] in first chronic phase and second chronic phase \[CP2\] after myeloid blast crisis; 2. acute lymphoblastic leukemia, Burkitt's lymphoma, CML CP2 post lymphoid blast crisis, 3. large-cell B and T-cell lymphoma, mantle cell lymphoma; 4. chronic lymphocytic leukemia/small lymphocytic lymphoma, prolymphocytic leukemia, marginal zone B-cell lymphoma, follicular lymphoma; 5. Hodgkin's lymphoma and multiple myeloma. * Nonmyeloablative conditioning: Patients receive fludarabine intravenously on days -6 to -2 and cyclophosphamide IV on day -6. Patients who did not undergo prior autologous transplant or who received ≤ 1 course of prior multiagent chemotherapy or no severely immunosuppressive therapy in the past 3 months also receive anti-thymocyte globulin IV on days -6 to -4. All patients also undergo total-body irradiation on day -1. * Umbilical cord blood transplant: Patients undergo umbilical cord blood transplantation on day 0. * Post-transplant immunosuppression: Sirolimus will be administered starting at day -3 with 8mg-12mg mg oral loading dose followed by single dose 4 mg/day with a target serum concentration of 3 to 12 mg/mL. Levels are to be monitored 3 times/week in the first 2 weeks, weekly until day +60, and as clinically indicated until day +100 post-transplantation. In the absence of acute GVHD sirolimus may be tapered starting at day +100 and eliminated by day +180 post-transplantation. Patients also receive mycophenolate mofetil IV on days -3 to 5 and then orally on days 6-30. After completion of study treatment, patients are followed periodically for 5 years. PROJECTED ACCRUAL: A total of 320 patients will be accrued for this study.

Interventions

BIOLOGICALanti-thymocyte globulin

Equine ATG dose is 15 mg/kg intravenously (IV) every 12 hours for 6 doses on days -6, - 5, and -4.

DRUGcyclophosphamide

Cyclophosphamide 50mg/kg x 1 to be administered IV over 2 hours with high volume fluid flush on day -6.

DRUGFludarabine

Fludarabine 40 mg/m2/day or 30 mg/m2/day intravenously (IV) as one hour infusion x 5 days, on day -6 to -2.

DRUGmycophenolate mofetil

Mycophenolate mofetil (MMF) 3 gram/day for patients who are ≥ 40 kg divided in 2 or 3 doses. Pediatric patient (\<40 kilograms) will receive MMF at the dose of 15 mg/kg/dose every 8 hours.

PROCEDUREumbilical cord blood transplantation

One or 2 UCB units may be infused to achieve the required cell dose.

RADIATIONtotal body irradiation

Administered Day -1, 200 cGy

DRUGSirolimus

Sirolimus will be administered starting at day -3 with 8mg-12mg mg oral loading dose followed by single dose 4 mg/day with a target serum concentration of 3 to 12 mg/mL. Levels are to be monitored 3 times/week in the first 2 weeks, weekly until day +60, and as clinically indicated until day +100 post-transplantation. In the absence of acute GVHD sirolimus may be tapered starting at day +100 and eliminated by day +180 post-transplantation.

Sponsors

Masonic Cancer Center, University of Minnesota
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

Age, Graft Cell Dose and Graft HLA Criteria * Subjects must be \<70 years old. Subjects ages ≥ 70 and ≤ 75 may be eligible if they have a Co-Morbidity Scoring (HCT-CI) score ≤ 2. * The UCB graft is matched at 4-6 HLA-A, B, DRB1 antigens with the recipient. * Patients co-enrolled in MT-2006-01 Phase I Study of Infusion of Umbilical Cord Blood Derived CD25+CD4+ T-Regulatory (Treg) Cells after Non-Myeloablative Cord\\Blood Transplantation will receive grafts composed of 2 UCB units. Disease Criteria: * Acute Leukemias: * Acute myeloid leukemia: high risk complete remission 1 (CR1) (as evidenced by preceding myelodysplastic syndrome (MDS), high risk cytogenetics such as those associated with MDS or complex karyotype, \> 2 cycles to obtain CR or erythroblastic and megakaryocytic); second or greater CR. * Acute lymphoblastic leukemia/lymphoma: high risk CR1 as evidenced by high risk cytogenetics (e.g. t(9;22), t(1;19),t(4;11), other myeloid/lymphoid or mixed lineage leukemia \[MLL\] rearrangements, hypodiploidy or Ikaros family zinc finger 1 \[IKZF1\]), \> 1 cycle to obtain CR or evidence of minimal residual disease (MRD). Patients in second or greater CR are also eligible. * Burkitt's lymphoma in CR2 or subsequent CR * Natural Killer cell malignancies * Chronic myelogenous leukemia: all types except refractory blast crisis. Chronic phase patients must have failed or been intolerant to Gleevec * Myelodysplastic syndrome: * Large-cell lymphoma, Hodgkin lymphoma and multiple myeloma with chemotherapy sensitive disease that has failed or patients who are ineligible for an autologous transplant. * Chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL), marginal zone B-cell lymphoma, follicular lymphoma, which have progressed within 12 months of achieving a partial or complete remission. Patients who had remissions lasting \> 12 months, are eligible after at least two prior therapies. Patients with bulky disease should be considered for debulking chemotherapy before transplant. Patients with refractory disease are eligible, unless has bulky disease and an estimated tumor doubling time of less than one month. * Lymphoplasmacytic lymphoma, mantle-cell lymphoma, prolymphocytic leukemia are eligible after initial therapy if chemotherapy sensitive. * Refractory leukemia or MDS. * Bone marrow failure syndromes, except for Fanconi Anemia * Myeloproliferative syndromes Patients who have undergone an autologous transplant \>12 months prior to allogeneic transplantation Adequate Organ Function and Performance Status

Exclusion criteria

* \< 70 years with an available 5-6/6 HLA-A, B, DRB1 matched sibling donor * Pregnancy or breastfeeding * Evidence of human immunodeficiency virus (HIV) infection or known HIV positive serology * Current active serious infection * Unless in post-chemotherapy and radioimmunoconjugated antibody induced aplasia, when he/she would be eligible for Arm 3, patients with acute leukemia in morphologic relapse/ persistent disease defined as \> 5% blasts in normocellular bone marrow OR any % blasts if blasts have unique morphologic markers (e.g. Auer rods) or associated cytogenetic markers that allows morphologic relapse to be distinguished are not eligible. * Chronic myelogenous leukemia (CML) in refractory blast crisis * Large cell lymphoma, mantle cell lymphoma and Hodgkin disease that is progressive on salvage therapy. Stable disease is acceptable to move forward provided it is non-bulky. * Active central nervous system malignancy

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants Who Were Alive at 1 Year Post Transplant1 YearOverall Survival - Number of patients alive at 1 year post transplant
Number of Participants Who Were Alive at 2 Years Post Transplant2 YearsOverall Survival - Number of patients alive at 2 years post transplant

Secondary

MeasureTime frameDescription
Percentage of Donor Chimerism at 100 Days100 daysChimerism studies will be performed on the blood and bone marrow (BM). BM chimerism days 21 and 100, at 6 months and 1 year to determine the relative contribution of donor and recipient hematopoiesis.
Percentage of Donor Chimerism at 180 Days180 DaysChimerism studies will be performed on the blood and bone marrow (BM). BM chimerism days 21 and 100, at 6 months and 1 year to determine the relative contribution of donor and recipient hematopoiesis.
Percentage of Donor Chimerism at 365 Days365 daysChimerism studies will be performed on the blood and bone marrow (BM). BM chimerism days 21 and 100, at 6 months and 1 year to determine the relative contribution of donor and recipient hematopoiesis.
Number of Participants With Neutrophil EngraftmentDay 42Time to 1st 3 consecutive days with absolute neutrophil count (ANC) \> 5 x 10\^8/L and percentage of patients with neutrophil recovery by day 42 (Cumulative incidence).
Number of Participants With Platelet EngraftmentDay 180Time to platelets \> 20,000 (first of 3 consecutive days) with no platelet transfusions for seven days and percentage of patients with platelet engraftment \>50,000 by day 100.
Number of Participants Who Were Dead at 6 Months After Study CompletionMonth 6Incidence of Non-relapse mortality - Number of Patients Dead at 6 Months after study completion
Number of Participants With Chronic Graft-Versus-Host Disease1 YearDetermine the incidence of chronic GVHD at 1 year after transplant. Patients will be staged weekly between days 0 and 100 after transplantation using standard criteria. Patients will be assigned an overall GVHD score based on extent of skin rash, volume of diarrhea and maximum bilirubin level.
Number of Participants Experiencing Progression-free Survival1 YearIncidence of Progression-free survival - Number of patients who were alive and did not have disease progression. Patients with leukemia and lymphoma involving the bone marrow (BM) and multiple myeloma will have this done by BM biopsy and additional special studies such as cytogenetics or flow cytometry as appropriate. Patients with lymphoma and myeloma will have radiology studies such as plain X-rays or CT scans and/or other studies such as blood tumor markers to document presence or absence of disease as clinically indicated.
Number of Participants Experiencing Progression-free Survival at 2 Years2 YearsIncidence of Progression-free survival - Number of patients who were alive and did not have disease progression
Number of Participants Experiencing Relapse (Incidence of Relapse)Year 1Patients with leukemia and lymphoma involving the BM and multiple myeloma will have this done by BM biopsy and additional special studies such as cytogenetics or flow cytometry as appropriate. Patients with lymphoma and myeloma will have radiology studies such as plain X-rays or CT scans and/or other studies such as blood tumor markers to document presence or absence of disease as clinically indicated.
Number of Participants Experiencing Relapse (Incidence of Relapse) at 2 Years2 yearsPatients with leukemia and lymphoma involving the BM and multiple myeloma will have this done by BM biopsy and additional special studies such as cytogenetics or flow cytometry as appropriate. Patients with lymphoma and myeloma will have radiology studies such as plain X-rays or CT scans and/or other studies such as blood tumor markers to document presence or absence of disease as clinically indicated.
Number of Participants With Acute Graft-versus-host Disease (GVHD)Day 100Determine the incidence of grade II-IV and grade III-IV acute graft-versus-host disease (GVHD) at day 100 post transplant. Patients will be staged weekly between days 0 and 100 after transplantation using standard criteria used for staging. Patients will be assigned an overall GVHD score based on extent of skin rash, volume of diarrhea and maximum bilirubin level.
Percentage of Donor Chimerism at 21 Days21 daysChimerism studies will be performed on the blood and bone marrow (BM). BM chimerism days 21 and 100, at 6 months and 1 year to determine the relative contribution of donor and recipient hematopoiesis.

Countries

United States

Participant flow

Recruitment details

7 patients were excluded from receiving the treatment as they were not eligible. 4 patients were removed from the study because the participating site withdrew the participation from the study

Participants by arm

ArmCount
Arm 1-Previous Autologous Transplant
hematologic malignancy patients who have received a previous autologous transplant or ≥ 2 cycle of multiagent chemotherapy within the last 3 months previous to umbilical cord blood transplant (UCBT). Conditioning Fludarabine dose of 40 mg/m2/day x 5, cyclophosphamide and total body irradiation without anti-thymocyte globulin followed by umbilical cord blood transplantation, and peri-transplant Mycophenolate Mofetil and Sirolimus.
98
Arm 2 - No Prior Autologous Transplant
Arm 2 - hematologic malignancy patients who have not been treated with prior autologous transplant or ≤ 1 cycle of chemotherapy in the 3 months previous to umbilical cord blood transplant (UCBT), and who should receive anti-thymocyte globulin as conditioning regimen. Conditioning Fludarabine dose of 40 mg/m2/day x 5, cyclophosphamide and total body irradiation with anti-thymocyte globulin followed by umbilical cord blood transplantation, and peri-transplant Mycophenolate Mofetil and Sirolimus.
71
Arm 3 - Refractory Leukemia/Lymphoma
Arm 3 - patients with refractory leukemia or lymphoma who have been rendered aplastic either by induction chemotherapy or radioimmunoconjugated monoclonal antibody therapy. Conditioning Fludarabine dose of 40 mg/m2/day x 5, cyclophosphamide and total body irradiation with anti-thymocyte globulin followed by umbilical cord blood transplantation, and peri-transplant Mycophenolate Mofetil and Sirolimus.
7
Arm 4: MT2006-01 Coenrolling Patients
Arm 4 - hematologic malignancy patients enrolled in MT2006-01. Conditioning Fludarabine dose of 40 mg/m2/day x 5, cyclophosphamide and total body irradiation with or without anti-thymocyte globulin followed by umbilical cord blood transplantation, and peri-transplant Mycophenolate Mofetil and Sirolimus.
34
Arm 5 - Previous Autologous Transplant
Arm 5 - hematologic malignancy patients who have received a previous autologous transplant or ≥ 2 cycle of multiagent chemotherapy within the last 3 months previous to umbilical cord blood transplant (UCBT). Conditioning Fludarabine dose of 30 mg/m2/day x 5, cyclophosphamide and total body irradiation without anti-thymocyte globulin followed by umbilical cord blood transplantation, and peri-transplant Mycophenolate Mofetil and Sirolimus.
39
Arm 6 - No Prior Autologous Transplant
Arm 6 - hematologic malignancy patients who have not been treated with prior autologous transplant or ≤ 1 cycle of chemotherapy in the 3 months previous to umbilical cord blood transplant (UCBT), and who should receive anti-thymocyte globulin as conditioning regimen. Conditioning Fludarabine dose of 30 mg/m2/day x 5, cyclophosphamide and total body irradiation with anti-thymocyte globulin followed by umbilical cord blood transplantation, and peri-transplant Mycophenolate Mofetil and Sirolimus.
35
Total284

Baseline characteristics

CharacteristicArm 1-Previous Autologous TransplantArm 2 - No Prior Autologous TransplantArm 3 - Refractory Leukemia/LymphomaArm 4: MT2006-01 Coenrolling PatientsArm 5 - Previous Autologous TransplantArm 6 - No Prior Autologous TransplantTotal
Age, Categorical
<=18 years
7 Participants3 Participants0 Participants0 Participants0 Participants1 Participants11 Participants
Age, Categorical
>=65 years
12 Participants13 Participants1 Participants4 Participants10 Participants15 Participants55 Participants
Age, Categorical
Between 18 and 65 years
79 Participants55 Participants6 Participants30 Participants29 Participants19 Participants218 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants1 Participants0 Participants0 Participants0 Participants0 Participants1 Participants
Race (NIH/OMB)
Asian
0 Participants2 Participants1 Participants1 Participants0 Participants2 Participants6 Participants
Race (NIH/OMB)
Black or African American
6 Participants1 Participants0 Participants2 Participants0 Participants1 Participants10 Participants
Race (NIH/OMB)
More than one race
1 Participants1 Participants0 Participants0 Participants0 Participants0 Participants2 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants1 Participants0 Participants0 Participants0 Participants1 Participants2 Participants
Race (NIH/OMB)
Unknown or Not Reported
9 Participants4 Participants1 Participants0 Participants0 Participants1 Participants15 Participants
Race (NIH/OMB)
White
82 Participants61 Participants5 Participants31 Participants39 Participants30 Participants248 Participants
Region of Enrollment
United States
98 participants71 participants7 participants34 participants39 participants35 participants284 participants
Sex: Female, Male
Female
37 Participants29 Participants5 Participants16 Participants14 Participants15 Participants116 Participants
Sex: Female, Male
Male
61 Participants42 Participants2 Participants18 Participants25 Participants20 Participants168 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
deaths
Total, all-cause mortality
48 / 9840 / 716 / 714 / 3418 / 3912 / 35
other
Total, other adverse events
76 / 9854 / 715 / 720 / 3433 / 3935 / 35
serious
Total, serious adverse events
53 / 9848 / 713 / 711 / 342 / 394 / 35

Outcome results

Primary

Number of Participants Who Were Alive at 1 Year Post Transplant

Overall Survival - Number of patients alive at 1 year post transplant

Time frame: 1 Year

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Arm 1-Previous Autologous TransplantNumber of Participants Who Were Alive at 1 Year Post Transplant59 Participants
Arm 2 - No Prior Autologous TransplantNumber of Participants Who Were Alive at 1 Year Post Transplant40 Participants
Arm 3 - Refractory Leukemia/LymphomaNumber of Participants Who Were Alive at 1 Year Post Transplant1 Participants
Arm 4: MT2006-01 Coenrolling PatientsNumber of Participants Who Were Alive at 1 Year Post Transplant26 Participants
Arm 5 - Previous Autologous TransplantNumber of Participants Who Were Alive at 1 Year Post Transplant26 Participants
Arm 6 - No Prior Autologous TransplantNumber of Participants Who Were Alive at 1 Year Post Transplant25 Participants
Primary

Number of Participants Who Were Alive at 2 Years Post Transplant

Overall Survival - Number of patients alive at 2 years post transplant

Time frame: 2 Years

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Arm 1-Previous Autologous TransplantNumber of Participants Who Were Alive at 2 Years Post Transplant50 Participants
Arm 2 - No Prior Autologous TransplantNumber of Participants Who Were Alive at 2 Years Post Transplant31 Participants
Arm 3 - Refractory Leukemia/LymphomaNumber of Participants Who Were Alive at 2 Years Post Transplant1 Participants
Arm 4: MT2006-01 Coenrolling PatientsNumber of Participants Who Were Alive at 2 Years Post Transplant20 Participants
Arm 5 - Previous Autologous TransplantNumber of Participants Who Were Alive at 2 Years Post Transplant21 Participants
Arm 6 - No Prior Autologous TransplantNumber of Participants Who Were Alive at 2 Years Post Transplant23 Participants
Secondary

Number of Participants Experiencing Progression-free Survival

Incidence of Progression-free survival - Number of patients who were alive and did not have disease progression. Patients with leukemia and lymphoma involving the bone marrow (BM) and multiple myeloma will have this done by BM biopsy and additional special studies such as cytogenetics or flow cytometry as appropriate. Patients with lymphoma and myeloma will have radiology studies such as plain X-rays or CT scans and/or other studies such as blood tumor markers to document presence or absence of disease as clinically indicated.

Time frame: 1 Year

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Arm 1-Previous Autologous TransplantNumber of Participants Experiencing Progression-free Survival43 Participants
Arm 2 - No Prior Autologous TransplantNumber of Participants Experiencing Progression-free Survival32 Participants
Arm 3 - Refractory Leukemia/LymphomaNumber of Participants Experiencing Progression-free Survival1 Participants
Arm 4: MT2006-01 Coenrolling PatientsNumber of Participants Experiencing Progression-free Survival21 Participants
Arm 5 - Previous Autologous TransplantNumber of Participants Experiencing Progression-free Survival16 Participants
Arm 6 - No Prior Autologous TransplantNumber of Participants Experiencing Progression-free Survival24 Participants
Secondary

Number of Participants Experiencing Progression-free Survival at 2 Years

Incidence of Progression-free survival - Number of patients who were alive and did not have disease progression

Time frame: 2 Years

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Arm 1-Previous Autologous TransplantNumber of Participants Experiencing Progression-free Survival at 2 Years36 Participants
Arm 2 - No Prior Autologous TransplantNumber of Participants Experiencing Progression-free Survival at 2 Years25 Participants
Arm 3 - Refractory Leukemia/LymphomaNumber of Participants Experiencing Progression-free Survival at 2 Years1 Participants
Arm 4: MT2006-01 Coenrolling PatientsNumber of Participants Experiencing Progression-free Survival at 2 Years17 Participants
Arm 5 - Previous Autologous TransplantNumber of Participants Experiencing Progression-free Survival at 2 Years16 Participants
Arm 6 - No Prior Autologous TransplantNumber of Participants Experiencing Progression-free Survival at 2 Years20 Participants
Secondary

Number of Participants Experiencing Relapse (Incidence of Relapse)

Patients with leukemia and lymphoma involving the BM and multiple myeloma will have this done by BM biopsy and additional special studies such as cytogenetics or flow cytometry as appropriate. Patients with lymphoma and myeloma will have radiology studies such as plain X-rays or CT scans and/or other studies such as blood tumor markers to document presence or absence of disease as clinically indicated.

Time frame: Year 1

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Arm 1-Previous Autologous TransplantNumber of Participants Experiencing Relapse (Incidence of Relapse)43 Participants
Arm 2 - No Prior Autologous TransplantNumber of Participants Experiencing Relapse (Incidence of Relapse)14 Participants
Arm 3 - Refractory Leukemia/LymphomaNumber of Participants Experiencing Relapse (Incidence of Relapse)4 Participants
Arm 4: MT2006-01 Coenrolling PatientsNumber of Participants Experiencing Relapse (Incidence of Relapse)7 Participants
Arm 5 - Previous Autologous TransplantNumber of Participants Experiencing Relapse (Incidence of Relapse)20 Participants
Arm 6 - No Prior Autologous TransplantNumber of Participants Experiencing Relapse (Incidence of Relapse)2 Participants
Secondary

Number of Participants Experiencing Relapse (Incidence of Relapse) at 2 Years

Patients with leukemia and lymphoma involving the BM and multiple myeloma will have this done by BM biopsy and additional special studies such as cytogenetics or flow cytometry as appropriate. Patients with lymphoma and myeloma will have radiology studies such as plain X-rays or CT scans and/or other studies such as blood tumor markers to document presence or absence of disease as clinically indicated.

Time frame: 2 years

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Arm 1-Previous Autologous TransplantNumber of Participants Experiencing Relapse (Incidence of Relapse) at 2 Years49 Participants
Arm 2 - No Prior Autologous TransplantNumber of Participants Experiencing Relapse (Incidence of Relapse) at 2 Years19 Participants
Arm 3 - Refractory Leukemia/LymphomaNumber of Participants Experiencing Relapse (Incidence of Relapse) at 2 Years4 Participants
Arm 4: MT2006-01 Coenrolling PatientsNumber of Participants Experiencing Relapse (Incidence of Relapse) at 2 Years11 Participants
Arm 5 - Previous Autologous TransplantNumber of Participants Experiencing Relapse (Incidence of Relapse) at 2 Years20 Participants
Arm 6 - No Prior Autologous TransplantNumber of Participants Experiencing Relapse (Incidence of Relapse) at 2 Years4 Participants
Secondary

Number of Participants Who Were Dead at 6 Months After Study Completion

Incidence of Non-relapse mortality - Number of Patients Dead at 6 Months after study completion

Time frame: Month 6

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Arm 1-Previous Autologous TransplantNumber of Participants Who Were Dead at 6 Months After Study Completion10 Participants
Arm 2 - No Prior Autologous TransplantNumber of Participants Who Were Dead at 6 Months After Study Completion20 Participants
Arm 3 - Refractory Leukemia/LymphomaNumber of Participants Who Were Dead at 6 Months After Study Completion2 Participants
Arm 4: MT2006-01 Coenrolling PatientsNumber of Participants Who Were Dead at 6 Months After Study Completion5 Participants
Arm 5 - Previous Autologous TransplantNumber of Participants Who Were Dead at 6 Months After Study Completion3 Participants
Arm 6 - No Prior Autologous TransplantNumber of Participants Who Were Dead at 6 Months After Study Completion6 Participants
Secondary

Number of Participants With Acute Graft-versus-host Disease (GVHD)

Determine the incidence of grade II-IV and grade III-IV acute graft-versus-host disease (GVHD) at day 100 post transplant. Patients will be staged weekly between days 0 and 100 after transplantation using standard criteria used for staging. Patients will be assigned an overall GVHD score based on extent of skin rash, volume of diarrhea and maximum bilirubin level.

Time frame: Day 100

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Arm 1-Previous Autologous TransplantNumber of Participants With Acute Graft-versus-host Disease (GVHD)45 Participants
Arm 2 - No Prior Autologous TransplantNumber of Participants With Acute Graft-versus-host Disease (GVHD)24 Participants
Arm 3 - Refractory Leukemia/LymphomaNumber of Participants With Acute Graft-versus-host Disease (GVHD)1 Participants
Arm 4: MT2006-01 Coenrolling PatientsNumber of Participants With Acute Graft-versus-host Disease (GVHD)12 Participants
Arm 5 - Previous Autologous TransplantNumber of Participants With Acute Graft-versus-host Disease (GVHD)13 Participants
Arm 6 - No Prior Autologous TransplantNumber of Participants With Acute Graft-versus-host Disease (GVHD)13 Participants
Secondary

Number of Participants With Chronic Graft-Versus-Host Disease

Determine the incidence of chronic GVHD at 1 year after transplant. Patients will be staged weekly between days 0 and 100 after transplantation using standard criteria. Patients will be assigned an overall GVHD score based on extent of skin rash, volume of diarrhea and maximum bilirubin level.

Time frame: 1 Year

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Arm 1-Previous Autologous TransplantNumber of Participants With Chronic Graft-Versus-Host Disease18 Participants
Arm 2 - No Prior Autologous TransplantNumber of Participants With Chronic Graft-Versus-Host Disease20 Participants
Arm 3 - Refractory Leukemia/LymphomaNumber of Participants With Chronic Graft-Versus-Host Disease0 Participants
Arm 4: MT2006-01 Coenrolling PatientsNumber of Participants With Chronic Graft-Versus-Host Disease3 Participants
Arm 5 - Previous Autologous TransplantNumber of Participants With Chronic Graft-Versus-Host Disease3 Participants
Arm 6 - No Prior Autologous TransplantNumber of Participants With Chronic Graft-Versus-Host Disease3 Participants
Secondary

Number of Participants With Neutrophil Engraftment

Time to 1st 3 consecutive days with absolute neutrophil count (ANC) \> 5 x 10\^8/L and percentage of patients with neutrophil recovery by day 42 (Cumulative incidence).

Time frame: Day 42

Population: 7 participants were not evaluable

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Arm 1-Previous Autologous TransplantNumber of Participants With Neutrophil Engraftment93 Participants
Arm 2 - No Prior Autologous TransplantNumber of Participants With Neutrophil Engraftment65 Participants
Arm 3 - Refractory Leukemia/LymphomaNumber of Participants With Neutrophil Engraftment6 Participants
Arm 4: MT2006-01 Coenrolling PatientsNumber of Participants With Neutrophil Engraftment32 Participants
Arm 5 - Previous Autologous TransplantNumber of Participants With Neutrophil Engraftment32 Participants
Arm 6 - No Prior Autologous TransplantNumber of Participants With Neutrophil Engraftment29 Participants
Secondary

Number of Participants With Platelet Engraftment

Time to platelets \> 20,000 (first of 3 consecutive days) with no platelet transfusions for seven days and percentage of patients with platelet engraftment \>50,000 by day 100.

Time frame: Day 180

Population: 13 participants were not evaluable

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Arm 1-Previous Autologous TransplantNumber of Participants With Platelet Engraftment75 Participants
Arm 2 - No Prior Autologous TransplantNumber of Participants With Platelet Engraftment47 Participants
Arm 3 - Refractory Leukemia/LymphomaNumber of Participants With Platelet Engraftment3 Participants
Arm 4: MT2006-01 Coenrolling PatientsNumber of Participants With Platelet Engraftment28 Participants
Arm 5 - Previous Autologous TransplantNumber of Participants With Platelet Engraftment34 Participants
Arm 6 - No Prior Autologous TransplantNumber of Participants With Platelet Engraftment25 Participants
Secondary

Percentage of Donor Chimerism at 100 Days

Chimerism studies will be performed on the blood and bone marrow (BM). BM chimerism days 21 and 100, at 6 months and 1 year to determine the relative contribution of donor and recipient hematopoiesis.

Time frame: 100 days

Population: A total of 85 participants were not evaluable.

ArmMeasureValue (MEAN)Dispersion
Arm 1-Previous Autologous TransplantPercentage of Donor Chimerism at 100 Days94 percentage of donor cellsStandard Deviation 18
Arm 2 - No Prior Autologous TransplantPercentage of Donor Chimerism at 100 Days94 percentage of donor cellsStandard Deviation 21
Arm 3 - Refractory Leukemia/LymphomaPercentage of Donor Chimerism at 100 Days100 percentage of donor cellsStandard Deviation 0
Arm 4: MT2006-01 Coenrolling PatientsPercentage of Donor Chimerism at 100 Days93 percentage of donor cellsStandard Deviation 23
Arm 5 - Previous Autologous TransplantPercentage of Donor Chimerism at 100 Days85 percentage of donor cellsStandard Deviation 31
Arm 6 - No Prior Autologous TransplantPercentage of Donor Chimerism at 100 Days86 percentage of donor cellsStandard Deviation 32
Secondary

Percentage of Donor Chimerism at 180 Days

Chimerism studies will be performed on the blood and bone marrow (BM). BM chimerism days 21 and 100, at 6 months and 1 year to determine the relative contribution of donor and recipient hematopoiesis.

Time frame: 180 Days

Population: A total of 134 participants were not evaluable

ArmMeasureValue (MEAN)Dispersion
Arm 1-Previous Autologous TransplantPercentage of Donor Chimerism at 180 Days96 percentage of donor cellsStandard Deviation 18
Arm 2 - No Prior Autologous TransplantPercentage of Donor Chimerism at 180 Days98 percentage of donor cellsStandard Deviation 6
Arm 3 - Refractory Leukemia/LymphomaPercentage of Donor Chimerism at 180 Days88 percentage of donor cellsStandard Deviation 17
Arm 4: MT2006-01 Coenrolling PatientsPercentage of Donor Chimerism at 180 Days94 percentage of donor cellsStandard Deviation 16
Arm 5 - Previous Autologous TransplantPercentage of Donor Chimerism at 180 Days91 percentage of donor cellsStandard Deviation 26
Arm 6 - No Prior Autologous TransplantPercentage of Donor Chimerism at 180 Days98 percentage of donor cellsStandard Deviation 10
Secondary

Percentage of Donor Chimerism at 21 Days

Chimerism studies will be performed on the blood and bone marrow (BM). BM chimerism days 21 and 100, at 6 months and 1 year to determine the relative contribution of donor and recipient hematopoiesis.

Time frame: 21 days

Population: A total of 43 participants were not evaluable

ArmMeasureValue (MEAN)Dispersion
Arm 1-Previous Autologous TransplantPercentage of Donor Chimerism at 21 Days77 percentage of donor cellsStandard Deviation 25
Arm 2 - No Prior Autologous TransplantPercentage of Donor Chimerism at 21 Days73 percentage of donor cellsStandard Deviation 32
Arm 3 - Refractory Leukemia/LymphomaPercentage of Donor Chimerism at 21 Days57 percentage of donor cellsStandard Deviation 29
Arm 4: MT2006-01 Coenrolling PatientsPercentage of Donor Chimerism at 21 Days77 percentage of donor cellsStandard Deviation 21
Arm 5 - Previous Autologous TransplantPercentage of Donor Chimerism at 21 Days69 percentage of donor cellsStandard Deviation 32
Arm 6 - No Prior Autologous TransplantPercentage of Donor Chimerism at 21 Days68 percentage of donor cellsStandard Deviation 33
Secondary

Percentage of Donor Chimerism at 365 Days

Chimerism studies will be performed on the blood and bone marrow (BM). BM chimerism days 21 and 100, at 6 months and 1 year to determine the relative contribution of donor and recipient hematopoiesis.

Time frame: 365 days

Population: A total of 160 participants were not evaluable

ArmMeasureValue (MEAN)Dispersion
Arm 1-Previous Autologous TransplantPercentage of Donor Chimerism at 365 Days99 percentage of donor cellsStandard Deviation 2
Arm 2 - No Prior Autologous TransplantPercentage of Donor Chimerism at 365 Days98 percentage of donor cellsStandard Deviation 12
Arm 4: MT2006-01 Coenrolling PatientsPercentage of Donor Chimerism at 365 Days99 percentage of donor cellsStandard Deviation 6
Arm 5 - Previous Autologous TransplantPercentage of Donor Chimerism at 365 Days87 percentage of donor cellsStandard Deviation 34
Arm 6 - No Prior Autologous TransplantPercentage of Donor Chimerism at 365 Days100 percentage of donor cellsStandard Deviation 0

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