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Cord Blood With T-Cell Depleted Haplo-identical Peripheral Blood Stem Cell Transplantation for Hematological Malignancies

Myeloablative Unrelated Donor Cord Blood Transplantation With T-Cell Depleted Haplo-identical Peripheral Blood Stem Cells for Patients With High Risk Hematological Malignancies

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01682226
Enrollment
84
Registered
2012-09-10
Start date
2012-09-05
Completion date
2021-01-08
Last updated
2022-08-05

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

Conditions

Leukemia, Lymphoma, Myelodysplastic Syndrome

Keywords

CYCLOPHOSPHAMIDE (CYTOXAN), CYCLOSPORINE, FLUDARABINE, G-CSF, MYCOPHENOLATE MOFETIL (MMF), Cord Blood Transplantation, CliniMACS, 12-153

Brief summary

The purpose of this study is to find out whether the addition of blood stem cells from a close family member, when added to umbilical cord blood will make the transplant safer.

Detailed description

This is a phase 2 study to obtain an estimate of the speed of neutrophil recovery after myeloablative double-unit cord blood (CB) transplantation (CBT) with abrogation of prolonged cytopenia by the infusion of T-cell depleted peripheral blood stem cells (PBSC) from a haplo-identical family member. The CB graft will consist of two units from unrelated newborn donors and haplo-identical related PBSC. Candidates for this trial will include patients aged 2-70 years with high-risk or advanced forms of hematologic malignancies for whom an allogeneic hematopoietic stem cell transplant is indicated and for whom no suitably human leukocyte antigen (HLA)-matched and readily available unrelated donor exists. Patients will receive myeloablative conditioning and cyclosporine-A/ mycophenolate mofetil. CB grafts will consist of two CB units 4-6/6 HLA-matched to the patient to augment graft cell dose and additional T-cell depleted PBSC from a haplo-identical donor. The aim of the haplo-identical PBSC graft is to facilitate transient engraftment and consequent abrogation of the prolonged cytopenia normally associated with CBT by providing a myeloid bridge until CB engraftment occurs.

Interventions

DEVICECliniMACS Fractionation system (Arm A)

7 days before transplant Admit to hospital. Line insertion 6 days before transplant Fludarabine (chemotherapy) Cyclophosphamide (chemotherapy) 5 days before transplant Fludarabine Thiotepa 4 days before transplant Fludarabine Thiotepa 3 days before transplant Fludarabine Start CSA and MMF 2 days before transplant Fludarabine and TBI (radiation therapy) 1 day before transplant TBI (radiation therapy) Day of transplant Transplant day (infuse cord blood) Day after cord blood transplant Infuse family member stem cells 7 days after transplant Start G-CSF

DEVICECliniMACS Fractionation system (Arm B)

8 days before transplant Admit to hospital. Line insertion 7 days before transplant Fludarabine 6 days before transplant Fludarabine Cyclophosphamide 5 days before transplant Fludarabine Cyclophosphamide 4 days before transplant Rest 3 days before transplant TBI x 3 Start CSA and MMF 2 days before transplant TBI x 3 1 day before transplant TBI x 3 Day of transplant TBI x 2 then infuse cord blood 1 day after the cord blood transplant Infuse family member stem cells 7 days after transplant Start G-CSF

BIOLOGICALHaploidentical donor CD34+ cells

CB grafts will consist of two CB units 4-6/6 HLA-matched to the patient to augment graft cell dose and additional T-cell depleted PBSC from a haplo-identical donor.

Sponsors

Memorial Sloan Kettering Cancer Center
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
2 Years to 70 Years
Healthy volunteers
Yes

Inclusion criteria

Note: protocol eligible patients according to the criteria outlined below will then be divided according to age, diagnosis, performance status, organ function, prior transplantation, hematopoietic cell transplant comorbidity index (HCT-CI)23, and CB TNC dose into those who are at standard risk (Arm A) or high risk (Arm B) for early post-transplant death for the purposes of applying stopping rules and outcome analysis. Age: o 2 - 70 years. Diagnosis of severe aplastic anemia: eligibility to be discussed with PI and Service Chief. Such patients will be assessed in Arm B. Diagnosis of high risk hematological malignancy: Any acute leukemia in first complete remission (CR) considered at high risk for relapse, or second or third CR, or relapse/refractory less than 10% blasts in bone marrow, or aplasia post-therapy. This includes de novo acute leukemia or acute leukemia that is therapy related or arising from an antecedent hematologic disorder including myelodysplasia (MDS), chronic myeloid leukemia (CML) or other myeloproliferative disorder. * Juvenile myelomonocytic leukemia (JMML) in CR, or relapse with less than 10% bone marrow blasts. * CML with tyrosine kinase inhibitor failure in chronic or accelerated phase or evolved to acute leukemia. * MDS or other myeloproliferative disorder with life-threatening cytopenia(s), and/or red blood cell or platelet transfusion dependence, or patients with aplasia, or patients with excess blasts less than 10% blasts in the bone marrow at work-up. * Aggressive lymphoma: patients in CR1 with disease at high risk of relapse or CR2-3. * Indolent lymphoma or chronic lymphocytic leukemia (CLL): any disease status provided any transformed component is in CR. * Hodgkin's lymphoma that is primary refractory or relapsed not suitable for other therapy and in PR or CR or small volume stable disease. Performance status: * Karnofsky score ≥ 70 or Lansky score ≥ 70. • Organ function: * Resting left ventricular ejection fraction (LVEF) ≥ 50%. * Spirometry (FEV1 and FVC) & corrected DLCO ≥ 50% predicted. In small children use history and physical and CT scan to determine pulmonary status. * Total bilirubin ≤ to 1.5 mg/dl (unless benign congenital elevated bilirubin); ALT ≤ 3 x upper limit of normal (ULN). * Calculated creatinine (calc. creat.) clearance ≥ to 60 ml/min. * Albumin ≥ 3.0. Graft: o Cryopreserved dose will be ≥ 1.5 x 10\^7 TNC/kilogram in each unit for double unit CB grafts. This will be the CB graft for the majority of patients. In select patients with access to CB units that have high TNC (\> 5.0 x 10\^7/kg), and are from good quality CB banks a single unit could be considered with a back-up CB unit on standby. * In select patients who have a very poor search and only have one suitable CB unit available, this unit could be given as a single unit. This unit must have a TNC ≥ 2.0 x 10\^7 TNC/kilogram and a CD34+ cell dose ≥ 1.5 x 10\^5 CD34+/kilogram. * Haploidentical donors who are 5/10 or better but not HLA-identical will be used as outlined in section 6.4. Assignment of conditioning intensity (high dose vs reduced intensity) will be based on patient disease status, age, extent of prior therapy, organ function and presence of significant comorbidities as outlined in Section 9.2. For the purposes of analysis (not assignment of preparative regimen), patients will be assigned to Arms A and B as summarized below according to their risk of early post-transplant death. Eligible patients who fulfill all of the following criteria will be assigned to risk Arm A: Age 2-49 years Diagnosis Any acute leukemia in CR1 - CR2 (includes therapy-related and arising from MDS or myeloproliferative disease). JMML in CR. CML with TKI failure & \< 5% blasts. MDS with \< 5% blasts at work-up. Lymphoma (including CLL) CR1-2. Performance Status Karnofsky ≥ 80; Lansky ≥ 80 Organ Function Resting LVEF ≥ to 60% Spirometry (FEV1 and FVC) & corrected DLCO ≥ 80% predicted. Total bilirubin normal; ALT normal-1.4 x ULN. Calc. creat. clearance ≥ 70 ml/min. Prior HSC Transplant No HCT-CI score\^23 0-2 Pre-thaw TNC Dose Each unit ≥ to 2.0 x 10\^7/kg Eligible patients who meet any of the following criteria will be assigned to risk Arm B: Age 50-70 years Diagnosis Any acute leukemia in relapse/ refractory disease in BM or circulating blasts or CR3 or aplasia. JMML not in CR. MDS with aplasia or ≥ 5% blasts. Lymphoma (including CLL) with disease other than CR1-2. Severe myelofibrosis of the bone marrow Performance Status Karnofsky 70; Lansky 70 Organ Function LVEF 50-59%. Spirometry & corrected DLCO 50-79% predicted. Total bilirubin 1.1-1.5 mg/dl; ALT 1.5-3 x ULN. Calc. creat. clearance 60-69 ml/min. Prior HSC Transplant Yes HCT-CI score23 3 or higher Pre-thaw TNC Dose Either or both units 1.5-1.9 x 10\^7/kg.

Exclusion criteria

* Active CNS leukemia. * Any acute leukemia (including prior myelodysplasia or CML blast crisis) with morphologic relapse or persistent disease ≥ 10% blasts in the BM, or doubling of the blasts in the blood in the 2 weeks preceding admission, or need for hydroxyurea in the 2 weeks prior to admission, or uncontrolled extra-medullary disease. * Two prior stem cell transplants of any kind. * One prior autologous stem cell transplant within the preceding 12 months. * One prior allogeneic stem cell transplant within the preceding 24 months. * Prior radiation therapy with 400 cGy or more of TBI. If 200 cGy of prior TBI then only 400 CGy of TBI on this protocol is permitted. * Uncontrolled viral, bacteria or fungal infection at time of study enrollment. * Sero-positive or NAT positive for HIV. * Females who are pregnant or breast feeding. * Patient or guardian unable to give informed consent or unable to comply with the treatment protocol including appropriate supportive care, follow-up, and research tests Cord Blood Grafts: Units will be selected based on the HLA-match to the patient and individual cell doses of the units according to current MSKCC unit selection criteria. HLA-testing will be done using molecular techniques. The standard cord blood graft for this protocol will consist of 2 units as a double unit graft although single units are permitted. Each unit will be at least 4 of 6 HLA-A, -B antigen and -DRB1 allele matched with the recipient. Each unit of a double unit graft will have a cryopreserved dose of at least 1.5 x 10\^7 TNC/recipient body weight (TNC/kg). In the occasional patient with a large well matched good quality single unit or the rare patient with only one unit of suitable match and dose characteristics the cord blood graft can consist of a single unit as described in section 6.1 . Haploidentical Donor Inclusion Criteria: A HLA-haploidentical related donor will be selected as available as per standard MSKCC Adult BMT guidelines. Mismatched family members who are matched at more than 5 of 10 HLA-loci are permitted. Factors to be taken into account when selecting a haplo-identical donor will include donor age, weight, health status and comorbidities, compliance, venous access, recipent donor specific HLA-antibody status, and NK cell alloreactivity. * The donor must meet criteria outlined in the FACT-approved SOP for DONOR EVALUATION AND SELECTION FOR ALLOGENEIC TRANSPLANTATION in the Blood and Marrow Transplant Program Manual, document E-1 (see attached, or link to URL:(https://one.mskcc.org/sites/pub/corp/bmt/Documents/D2\_SOP\_Donor%20Selection%20and%20Evaluation\_04\_2015.pdf) * The donor must have adequate peripheral venous catheter access for leukapheresis or must agree to placement of a central catheter. * The donor must be \>25 kg in weight. Haploidentical Donor

Design outcomes

Primary

MeasureTime frameDescription
Percent of Engrafted Participants With Successful Neutrophil RecoveryDay 45The primary endpoint is neutrophil recovery ie the speed \[median (range) days to recovery\] and success \[day 45 cumulative incidence percent\].

Secondary

MeasureTime frameDescription
Overall Survivalup to 6 years78 adult patients were transplanted and received protocol therapy and that patient number was analyzed. Survival was analyzed in clinically meaningful patient groups according to having received protocol therapy, the diagnosis and patient comorbidity and have been published separately from the primary endpoint of engraftment.

Countries

United States

Participant flow

Pre-assignment details

Patients were accrued to this protocol in 2 arms based on the patients risk of transplant-related mortality. The division into 2 arms was for the purposes of the creation of clinically appropriate stopping rules to promote access to this therapy while ensuring safety. As the safety stopping rules were not reached in either arm all patients were combined for the analysis and analysis by individual arms was not indicated and not performed.

Participants by arm

ArmCount
Adult Haplo-dCBT Recipients
Participants included adult patients with high-risk hematologic malignancies without a suitable human leukocyte antigen (HLA)-matched related or unrelated donor, who had a suitable CB graft and a suitable haplo-identical donor.
78
Total78

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyParticipants did not receive treatment2
Overall StudyParticipants received a transplant under a different protocol1
Overall StudyParticipants were pediatric subjects and not adults subjects3

Baseline characteristics

CharacteristicAdult Haplo-dCBT Recipients
Age, Continuous49.5 years
Ethnicity (NIH/OMB)
Hispanic or Latino
6 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
72 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
9 Participants
Race (NIH/OMB)
Black or African American
10 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
0 Participants
Race (NIH/OMB)
White
59 Participants
Region of Enrollment
United States
78 Participants
Sex: Female, Male
Female
37 Participants
Sex: Female, Male
Male
41 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
21 / 78
other
Total, other adverse events
0 / 78
serious
Total, serious adverse events
21 / 78

Outcome results

Primary

Percent of Engrafted Participants With Successful Neutrophil Recovery

The primary endpoint is neutrophil recovery ie the speed \[median (range) days to recovery\] and success \[day 45 cumulative incidence percent\].

Time frame: Day 45

ArmMeasureValue (NUMBER)
Hematopoietic Engraftment ParticipantsPercent of Engrafted Participants With Successful Neutrophil Recovery96 % w/incidence of neutrophil recovery
Secondary

Overall Survival

78 adult patients were transplanted and received protocol therapy and that patient number was analyzed. Survival was analyzed in clinically meaningful patient groups according to having received protocol therapy, the diagnosis and patient comorbidity and have been published separately from the primary endpoint of engraftment.

Time frame: up to 6 years

ArmMeasureValue (MEDIAN)
Hematopoietic Engraftment ParticipantsOverall Survival3.75 years

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