Reduced Intensity Allogeneic HCT in Advanced Hematologic Malignancies w/T-Cell Depleted Graft

Registration Number
NCT05088356
Lead Sponsor
Stanford University
Brief Summary

Reduced intensity conditioning (RIC) has emerged and been increasingly adopted as a modality to allow preparative conditioning pre transplant to be tolerated by older adults or those patients that are otherwise unfit for myeloablative conditioning. In this study, we aim to use RIC followed by matched related/unrelated donor, 7/8 matched related/unrelated don...

Detailed Description

The objectives for the study are listed below:

Primary Objectives
...

Recruitment & Eligibility

Status
RECRUITING
Sex
All
Target Recruitment
40
Inclusion Criteria

Recipient Inclusion Criteria

a. Patients with the following diseases that are histopathologically-confirmed are eligible

  • Acute myeloid, lymphoid, or mixed phenotype leukemia in complete remission (CR) or CR with incomplete hematologic recovery (CRi) or beyond first complete remission (CR1) without the presence of minimal residual disease

  • Acute myeloid, leukemia, or mixed phenotype leukemia that is either:

  • Not in morphologic CR with bone marrow infiltration by leukemic blasts of ≤10%, or

  • In morphologic CR with evidence of minimal residual disease positivity by either multiparametric flow cytometric analysis or by a nucleic acid-based technique

  • Primary refractory acute myeloid, lymphoid, or mixed phenotype leukemia

  • Chronic myelogenous leukemia (accelerated, blast or second chronic phase)

  • Myelodysplastic syndromes

  • Myeloproliferative syndromes b. Match to the patient as follows: a. For Arm A1 (CLOSED):

    • Availability of a 8/8 or 7/8 HLA-matched donor (related or unrelated) defined by Class I (HLA-A, -B, -C) serologic typing (or higher resolution) and Class II (HLA-DRB1) molecular typing.

    • If the donor is a 7/8 HLA-match, the mismatch must be a permissive allelic mismatch as assessed by an independent HLA and transplantation expert. b. For Arm A1 and Arm A3:

    • Availability of a 8/8 HLA-matched donor (related or unrelated) defined by Class I (HLA-A, -B, -C) serologic typing (or higher resolution) and Class II (HLA-DRB1) molecular typing.

      c. For Arm B (CLOSED):

    • Availability of a haploidentical donor who is a ≥ 4/8 but <7/8 match at HLA-A, -B, -C, and -DRB1 (typed using DNA-based high-resolution methods), with at most one mismatch per locus d. For Arm C1 (CLOSED) and C2:

    • Availability of a 8/8 HLA matched donor (related or unrelated) defined by Class I (HLA-A, B, C) serologic typing (or higher resolution) and Class II (HLA DRB1) molecular typing.

      c. Age ≥ 18 and ≤75 years old at the time of enrollment. d. Left ventricular ejection fraction (LVEF) ≥ 45% e. Diffusing capacity of the lungs for carbon monoxide (DLCO) ≥ 50% f. Calculated creatinine clearance ≥ 50 mL/min or creatinine < 2.0 mg/dL g. SGPT and SGOT ≤ 3 x ULN, unless elevated secondary to disease Total bilirubin ≤ 2 x ULN (patients with Gilbert's syndrome may be included at the discretion of the PI or where hemolysis has been excluded h. Negative serum or urine beta-HCG test in females of childbearing potential within 3 weeks of registration i. Karnofsky performance status ≥ 70%

Donor Inclusion Criteria

  1. Age ≥ 18 and ≤ 75 years of age
  2. Karnofsky performance status of ≥ 70% defined by institutional standards
  3. Seronegative for HIV-1 RNA PCR; HIV 1 and HIV 2 ab (antibody); HTLV-1 and HTLV-2 ab; PCR+ or sAg (surface antigen) hepatitis B ; or PCR or sAg negative for hepatitis C; negative for the Treponema palladum antibody Syphillis screen; and negative for HIV-1 and hepatitis C by nucleic acid testing (NAT) within 30 days of apheresis collection.
  4. In the case that T palladum antibody tests are positive, donors must:

Be evaluated and show no evidence of syphilis infection of any stage by physical exam and history, or Have completed effective antibiotic therapy to treat syphilis, or Have a documented negative non-treponemal test (such as RPR) or in the case of a positive non-treponemal test must be evaluated by an infectious disease expert to evaluate for alternative causes of test positivity and confirm no evidence of active syphilitic disease e. Match to the patient as follows:

  1. Arm A1(CLOSED):

    • Must be a related or unrelated, 8/8 or 7/8-HLA match to recipient at HLAA, -B, -C, and -DRB1. If 7/8 HLA-matched, must be with permissive allelic HLA mismatch as assessed by an independent HLA and transplantation expert.

  2. Arm A2 and Arm A3:

    • Must be a related or unrelated, 8/8 HLA match to recipient at HLA A, B, C, and DRB1

  3. Arm B (CLOSED):

    • Must be a haploidentical donor who is ≥ 4/8 but < 7/8 match at HLA-A, -B, -C, and -DRB1, with at most one mismatch per locus.

  4. Arm C1 (CLOSED) and Arm C2:

    • Must be a related or unrelated 7/8 HLA matched to recipient at HLA A, B, C, DRB1 or -DQB1

f. Must be willing to donate PBSC for up two consecutive days g. Female donors of child-bearing potential must have a negative serum or urine beta HCG test within 3 weeks of mobilization h. Capable of undergoing leukapheresis, have adequate venous access, and be willing to undergo insertion of a central catheter should leukapheresis via peripheral vein be inadequate i. Agreeable to 2nd donation of PBPC (or bone marrow harvest) in the event of graft failure j. The donor or legal guardian greater than 18 years of age, capable of signing an IRB approved consent form. k. Meets other criteria for donation as specified by standard NMDP guidelines (NMDP donors) or institutional standards (non-NMDP donors) l. Donors not meeting federal eligibility criterion, may nonetheless be included if either apply as follows per 21 CFR § 1271.65:

  • The donor is a first-degree or second-degree blood relative of the recipient, or
  • Documented urgent medical need (DUMN), meaning no comparable human cell product is available and the recipient is likely to suffer death or serious morbidity without the human cell product, as attested by the Investigator or sub-investigator
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Exclusion Criteria

Recipient Exclusion Criteria

  1. Seropositive for any of the following:

    HIV antibodies; hepatitis B surface antigen (sAg); hepatitis C antibodies

  2. Patients deemed candidates for fully myeloablative preparative conditioning regimens

d. Candidate for autologous transplant e. Hepatitis B or C with SGPT or SGOT > 3 x ULN f. HIV-positive g. Active uncontrolled bacterial, viral or fungal infection, defined as currently taking antimicrobial therapy and progression of clinical symptoms. h. Uncontrolled CNS disease involvement i. Pregnant or a lactating female j. Positive serum or urine beta-HCG test in females of childbearing potential within 3 weeks of registration k. Psychosocial circumstances that preclude the patient being able to go through transplant or participate responsibly in follow-up care l. Known allergy or hypersensitivity to, or intolerance of, tacrolimus m. Positive anti-donor HLA antibodies against a mismatched allele in the selected donor determined by either:

  • A positive crossmatch of any titer; or
  • The presence of anti-donor HLA antibody to any HLA locus n. Any uncontrolled autoimmune disease requiring active immunosuppressive treatment o. Concurrent malignancies or active disease within 1 year, except nonmelanomatous skin cancers that have been curatively resected

Donor Exclusion Criteria

  1. Evidence of active infection
  2. Seropositive for HIV-1 or-2, HTLV-1 or -2
  3. Medical, physical, or psychological reason that would place the donor at increased risk for complications from growth factor or leukapheresis
  4. Lactating female
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Study & Design

Study Type
INTERVENTIONAL
Study Design
PARALLEL
Arm && Interventions
GroupInterventionDescription
Arm A1: Matched related/matched unrelated donor transplantation (closed)Purified regulatory T-cells (Treg) plus CD34+ HSPCSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant:. * Fludarabine (160 mg/m2) * Melphalan (50 mg/m2) * TBI (4Gy) All enrolled subjects will receive GVHD prophylaxis with single-agent tacrolimus.
Arm A1: Matched related/matched unrelated donor transplantation (closed)Filgrastim granulocyte colony-stimulating factor (G-CSF) or equivalentSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant:. * Fludarabine (160 mg/m2) * Melphalan (50 mg/m2) * TBI (4Gy) All enrolled subjects will receive GVHD prophylaxis with single-agent tacrolimus.
Arm B: Haploidentical transplantation (closed)Purified regulatory T-cells (Treg) plus CD34+ HSPCSubjects without an identified matched related or matched unrelated donor will receive a haploidentical transplantation with reduced intensity preparative conditioning: -. Fludarabine (160 mg/m2) * Melphalan (100 mg/m2 * TBI (4Gy) Patients will receive GVHD prophylaxis with post-transplant cyclophosphamide and tacrolimus.
Arm B: Haploidentical transplantation (closed)CliniMACS CD34 Reagent SystemSubjects without an identified matched related or matched unrelated donor will receive a haploidentical transplantation with reduced intensity preparative conditioning: -. Fludarabine (160 mg/m2) * Melphalan (100 mg/m2 * TBI (4Gy) Patients will receive GVHD prophylaxis with post-transplant cyclophosphamide and tacrolimus.
Arm B: Haploidentical transplantation (closed)Filgrastim granulocyte colony-stimulating factor (G-CSF) or equivalentSubjects without an identified matched related or matched unrelated donor will receive a haploidentical transplantation with reduced intensity preparative conditioning: -. Fludarabine (160 mg/m2) * Melphalan (100 mg/m2 * TBI (4Gy) Patients will receive GVHD prophylaxis with post-transplant cyclophosphamide and tacrolimus.
Arm A2: Fully matched (8/8) related/unrelated donor transplantationPurified regulatory T-cells (Treg) plus CD34+ HSPCSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant: * Fludarabine (160 mg/m2) * Thiotepa (10 mg/kg) * TBI (4Gy) All enrolled subjects will receive GVHD prophylaxis with single-agent tacrolimus.
Arm A2: Fully matched (8/8) related/unrelated donor transplantationTacrolimusSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant: * Fludarabine (160 mg/m2) * Thiotepa (10 mg/kg) * TBI (4Gy) All enrolled subjects will receive GVHD prophylaxis with single-agent tacrolimus.
Arm A2: Fully matched (8/8) related/unrelated donor transplantationFilgrastim granulocyte colony-stimulating factor (G-CSF) or equivalentSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant: * Fludarabine (160 mg/m2) * Thiotepa (10 mg/kg) * TBI (4Gy) All enrolled subjects will receive GVHD prophylaxis with single-agent tacrolimus.
Arm A3: Fully (8/8) matched related/unrelated donor transplantationPurified regulatory T-cells (Treg) plus CD34+ HSPCSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant: * Fludarabine (160 mg/m2) * Thiotepa (5 mg/kg) * TBI (2-3 Gy). All enrolled subjects will receive GVHD prophylaxis with single-agent tacrolimus.
Arm A3: Fully (8/8) matched related/unrelated donor transplantationFilgrastim granulocyte colony-stimulating factor (G-CSF) or equivalentSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant: * Fludarabine (160 mg/m2) * Thiotepa (5 mg/kg) * TBI (2-3 Gy). All enrolled subjects will receive GVHD prophylaxis with single-agent tacrolimus.
Arm C1:7/8 mismatched related/unrelated donor transplantation (closed)Purified regulatory T-cells (Treg) plus CD34+ HSPCSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant: * Fludarabine (160 mg/m2) * Thiotepa (10 mg/kg) * TBI (4 Gy) All enrolled subjects will receive GVHD prophylaxis with tacrolimus and mycophenolate mofetil (MMF).
Arm C1:7/8 mismatched related/unrelated donor transplantation (closed)TacrolimusSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant: * Fludarabine (160 mg/m2) * Thiotepa (10 mg/kg) * TBI (4 Gy) All enrolled subjects will receive GVHD prophylaxis with tacrolimus and mycophenolate mofetil (MMF).
Arm C1:7/8 mismatched related/unrelated donor transplantation (closed)PlerixaforSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant: * Fludarabine (160 mg/m2) * Thiotepa (10 mg/kg) * TBI (4 Gy) All enrolled subjects will receive GVHD prophylaxis with tacrolimus and mycophenolate mofetil (MMF).
Arm C1:7/8 mismatched related/unrelated donor transplantation (closed)Filgrastim granulocyte colony-stimulating factor (G-CSF) or equivalentSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant: * Fludarabine (160 mg/m2) * Thiotepa (10 mg/kg) * TBI (4 Gy) All enrolled subjects will receive GVHD prophylaxis with tacrolimus and mycophenolate mofetil (MMF).
Arm C1:7/8 mismatched related/unrelated donor transplantation (closed)Mycophenolate Mofetil (MMF)Subjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant: * Fludarabine (160 mg/m2) * Thiotepa (10 mg/kg) * TBI (4 Gy) All enrolled subjects will receive GVHD prophylaxis with tacrolimus and mycophenolate mofetil (MMF).
Arm C2: 7/8 mismatched related/unrelated donor transplantationPurified regulatory T-cells (Treg) plus CD34+ HSPCSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant: * Fludarabine (160 mg/m2) * Thiotepa (5 mg/kg) * TBI (2-3 Gy) All enrolled subjects will receive GVHD prophylaxis with tacrolimus and ruxolitinib.
Arm C2: 7/8 mismatched related/unrelated donor transplantationTacrolimusSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant: * Fludarabine (160 mg/m2) * Thiotepa (5 mg/kg) * TBI (2-3 Gy) All enrolled subjects will receive GVHD prophylaxis with tacrolimus and ruxolitinib.
Arm C2: 7/8 mismatched related/unrelated donor transplantationFilgrastim granulocyte colony-stimulating factor (G-CSF) or equivalentSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant: * Fludarabine (160 mg/m2) * Thiotepa (5 mg/kg) * TBI (2-3 Gy) All enrolled subjects will receive GVHD prophylaxis with tacrolimus and ruxolitinib.
Arm C2: 7/8 mismatched related/unrelated donor transplantationThiotepaSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant: * Fludarabine (160 mg/m2) * Thiotepa (5 mg/kg) * TBI (2-3 Gy) All enrolled subjects will receive GVHD prophylaxis with tacrolimus and ruxolitinib.
Arm B: Haploidentical transplantation (closed)PlerixaforSubjects without an identified matched related or matched unrelated donor will receive a haploidentical transplantation with reduced intensity preparative conditioning: -. Fludarabine (160 mg/m2) * Melphalan (100 mg/m2 * TBI (4Gy) Patients will receive GVHD prophylaxis with post-transplant cyclophosphamide and tacrolimus.
Arm C2: 7/8 mismatched related/unrelated donor transplantationRuxolitinibSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant: * Fludarabine (160 mg/m2) * Thiotepa (5 mg/kg) * TBI (2-3 Gy) All enrolled subjects will receive GVHD prophylaxis with tacrolimus and ruxolitinib.
Arm A1: Matched related/matched unrelated donor transplantation (closed)MelphalanSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant:. * Fludarabine (160 mg/m2) * Melphalan (50 mg/m2) * TBI (4Gy) All enrolled subjects will receive GVHD prophylaxis with single-agent tacrolimus.
Arm A1: Matched related/matched unrelated donor transplantation (closed)FludarabineSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant:. * Fludarabine (160 mg/m2) * Melphalan (50 mg/m2) * TBI (4Gy) All enrolled subjects will receive GVHD prophylaxis with single-agent tacrolimus.
Arm A1: Matched related/matched unrelated donor transplantation (closed)TacrolimusSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant:. * Fludarabine (160 mg/m2) * Melphalan (50 mg/m2) * TBI (4Gy) All enrolled subjects will receive GVHD prophylaxis with single-agent tacrolimus.
Arm A1: Matched related/matched unrelated donor transplantation (closed)PlerixaforSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant:. * Fludarabine (160 mg/m2) * Melphalan (50 mg/m2) * TBI (4Gy) All enrolled subjects will receive GVHD prophylaxis with single-agent tacrolimus.
Arm B: Haploidentical transplantation (closed)FludarabineSubjects without an identified matched related or matched unrelated donor will receive a haploidentical transplantation with reduced intensity preparative conditioning: -. Fludarabine (160 mg/m2) * Melphalan (100 mg/m2 * TBI (4Gy) Patients will receive GVHD prophylaxis with post-transplant cyclophosphamide and tacrolimus.
Arm B: Haploidentical transplantation (closed)MelphalanSubjects without an identified matched related or matched unrelated donor will receive a haploidentical transplantation with reduced intensity preparative conditioning: -. Fludarabine (160 mg/m2) * Melphalan (100 mg/m2 * TBI (4Gy) Patients will receive GVHD prophylaxis with post-transplant cyclophosphamide and tacrolimus.
Arm B: Haploidentical transplantation (closed)TacrolimusSubjects without an identified matched related or matched unrelated donor will receive a haploidentical transplantation with reduced intensity preparative conditioning: -. Fludarabine (160 mg/m2) * Melphalan (100 mg/m2 * TBI (4Gy) Patients will receive GVHD prophylaxis with post-transplant cyclophosphamide and tacrolimus.
Arm B: Haploidentical transplantation (closed)CyclophosphamideSubjects without an identified matched related or matched unrelated donor will receive a haploidentical transplantation with reduced intensity preparative conditioning: -. Fludarabine (160 mg/m2) * Melphalan (100 mg/m2 * TBI (4Gy) Patients will receive GVHD prophylaxis with post-transplant cyclophosphamide and tacrolimus.
Arm A2: Fully matched (8/8) related/unrelated donor transplantationFludarabineSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant: * Fludarabine (160 mg/m2) * Thiotepa (10 mg/kg) * TBI (4Gy) All enrolled subjects will receive GVHD prophylaxis with single-agent tacrolimus.
Arm A2: Fully matched (8/8) related/unrelated donor transplantationPlerixaforSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant: * Fludarabine (160 mg/m2) * Thiotepa (10 mg/kg) * TBI (4Gy) All enrolled subjects will receive GVHD prophylaxis with single-agent tacrolimus.
Arm A2: Fully matched (8/8) related/unrelated donor transplantationThiotepaSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant: * Fludarabine (160 mg/m2) * Thiotepa (10 mg/kg) * TBI (4Gy) All enrolled subjects will receive GVHD prophylaxis with single-agent tacrolimus.
Arm A3: Fully (8/8) matched related/unrelated donor transplantationFludarabineSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant: * Fludarabine (160 mg/m2) * Thiotepa (5 mg/kg) * TBI (2-3 Gy). All enrolled subjects will receive GVHD prophylaxis with single-agent tacrolimus.
Arm A3: Fully (8/8) matched related/unrelated donor transplantationTacrolimusSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant: * Fludarabine (160 mg/m2) * Thiotepa (5 mg/kg) * TBI (2-3 Gy). All enrolled subjects will receive GVHD prophylaxis with single-agent tacrolimus.
Arm A3: Fully (8/8) matched related/unrelated donor transplantationPlerixaforSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant: * Fludarabine (160 mg/m2) * Thiotepa (5 mg/kg) * TBI (2-3 Gy). All enrolled subjects will receive GVHD prophylaxis with single-agent tacrolimus.
Arm A3: Fully (8/8) matched related/unrelated donor transplantationThiotepaSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant: * Fludarabine (160 mg/m2) * Thiotepa (5 mg/kg) * TBI (2-3 Gy). All enrolled subjects will receive GVHD prophylaxis with single-agent tacrolimus.
Arm C1:7/8 mismatched related/unrelated donor transplantation (closed)FludarabineSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant: * Fludarabine (160 mg/m2) * Thiotepa (10 mg/kg) * TBI (4 Gy) All enrolled subjects will receive GVHD prophylaxis with tacrolimus and mycophenolate mofetil (MMF).
Arm C1:7/8 mismatched related/unrelated donor transplantation (closed)ThiotepaSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant: * Fludarabine (160 mg/m2) * Thiotepa (10 mg/kg) * TBI (4 Gy) All enrolled subjects will receive GVHD prophylaxis with tacrolimus and mycophenolate mofetil (MMF).
Arm C2: 7/8 mismatched related/unrelated donor transplantationFludarabineSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant: * Fludarabine (160 mg/m2) * Thiotepa (5 mg/kg) * TBI (2-3 Gy) All enrolled subjects will receive GVHD prophylaxis with tacrolimus and ruxolitinib.
Arm C2: 7/8 mismatched related/unrelated donor transplantationPlerixaforSubjects will receive reduced intensity preparative chemotherapy conditioning for a matched related/ unrelated donor transplant: * Fludarabine (160 mg/m2) * Thiotepa (5 mg/kg) * TBI (2-3 Gy) All enrolled subjects will receive GVHD prophylaxis with tacrolimus and ruxolitinib.
Primary Outcome Measures
NameTimeMethod
Determine the overall survival (OS) post-HCT ( Arm-B)2 years

Overall survival is measured as number of participants alive. Alive at the time of last observation will be censored.

Determine the GVHD-free relapse-free survival (GRFS) post-HCT ( Arm-A)12 months

Clinical effect will be assessed as graft vs host disease (GVHD)-free relapse free survival (GRFS), GVHD-free is defined as no GVHD symptoms, and relapse free survival is defined as survival at 12 months without relapse. The outcome will be measured in Arm A only.

Incidence of Grade III-IV acute GVHDAt baseline, day +30, 60, 90, 180, year 1 and year 2

Acute GVHD will be staged and graded per Mount Sinai Acute GvHD International Consortium (MAGIC) Standardization criteria.

The incidence and timing of primary graft failure2 years from the Day 0 (day of CD34+ peripheral blood stem cell infusion

Primary graft failure is defined as being alive with donor CD3 chimerism \<5% at day +30 after transplant without recovery of neutrophils (i.e. without achieving an absolute neutrophil count \[ANC\] ≥ 500/mm3 for 3 consecutive days) at Day+28

Donor CD3 chimerism at Day+60 post-HCT2 years from the Day 0 (day of CD34+ peripheral blood stem cell infusion)

Defined as a percentage on donor CD3 cells chimerism at day +60 after transplantation.

Secondary Outcome Measures
NameTimeMethod
Overall survival12 months

Overall survival is measured as number of participants alive. Alive at the time of last observation will be censored.

Treatment-emergent adverse events (TEAs)from Day 0 through 100 days

TEAEs will be categorized by the System Organ Class and preferred term and will be graded according to the CTCAE version 5.0

Acute GVHD (all grades)from Day 0 through 100 days

Acute GVHD (all grades) will be reported

GVHD-relapse-free survival12 months

Clinical effect will be assessed as graft vs host disease (GVHD)-free relapse free survival (GRFS), GVHD-free is defined as no GVHD grade 3 and 4, and relapse free survival is defined as survival at 12 months without relapse.

Secondary graft failurefrom Day 0 through 100 days

Secondary graft failure (defined by donor CD3 chimerism \<5% at day +30 after transplant) and neutrophil engraftment followed by subsequent decline in ANC \< 500/mm3 unresponsive to growth factor therapy, by Day +100

Steroid-refractory acute GVHDwithin 3-5 days of therapy onset

Steroid refractory acute GVHD will be defined as per the EBMT-NIH-CIBMTR Task Force position statement

Non-relapse mortality (NRM)12 months

Non-relapse mortality is measured as number of participants died without relapse/ recurrent disease. Subjects without evidence of relapse/progression at last follow-up date or date of death will be censored.

Disease-free survival (DFS)12 months

Overall survival is measured as number of participants alive and in remission. Alive in remission at the time of last observation will be censored.

Chronic GVHD (limited or extensive)from Day 0 through Year 2

Chronic GVHD will be diagnosed per 2014 International NIH Chronic GVHD Diagnosis and Staging Consensus Working Group criteria (Jagasia 2015). Chronic GVHD scored according to the first day of chronic GVHD onset will be used to calculate cumulative incidence curves. Subjects will be followed for 2 years from the Day 0 (day of CD34+ peripheral blood stem cell ...

Trial Locations

Locations (1)

Stanford University

🇺🇸

Stanford, California, United States

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