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LeukemiaAB-CliniMACsNCT02323867

Allogeneic Stem Cell Transplant With Alpha/Beta T AND B Cell Depletion for Hematologic Malignancies

A study testing CliniMACS α/β T-Cell and CD19+ B-Cell Depleted Peripheral Blood Stem Cell Transplant in people with Leukemia and Lymphoma, run by Children's Hospital of Philadelphia at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This is a single-arm study evaluating allogeneic hematopoietic stem cell transplantation (HSCT) using mobilized peripheral blood stem cells from unrelated or partially matched related donors that are ex vivo depleted of α/β T cells and CD19+ B cells using the CliniMACS device. Read more about this study

Who is it for?
Ages Up to 23 years
Conditions the study is for
Leukemia, Lymphoma, Myelodysplasia
What is being tested?
CliniMACS α/β T-Cell and CD19+ B-Cell Depleted Peripheral Blood Stem Cell Transplant
Could I receive a placebo?
No, everyone receives an active treatment
How many people
98 participants
Where
1 siteUnited States
Study dates
Oct 2014to May 2026
Phase
Interventional
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages Up to 23 years
  • All sexes
  • No healthy volunteers
  • Child, Adult

Who may be able to join

  • Age 23 or less years at time of enrollment
  • Diagnosis of a hematologic malignancy, including:
  • Acute myeloid leukemia (primary or secondary) in remission or <10% bone marrow blasts
  • Acute lymphoblastic leukemia in hematologic remission
  • Myelodysplastic syndrome
  • Chronic myelogenous leukemia (chronic phase, accelerated phase, or blast crisis in second chronic phase)
Show all 18Show fewer
  • Mixed lineage or biphenotypic acute leukemia
  • Lymphoblastic lymphoma in remission
  • Burkitt lymphoma/leukemia in remission
  • Eligible for allogeneic hematopoietic stem cell transplantation (HSCT) per institutional criteria:
  • Availability of an appropriate donor:
  • Unrelated donor with up to one antigen mismatch or defined allele mismatch
  • Partially matched related donor, including haploidentical donors
  • Adequate organ function as per institutional bone marrow transplant (BMT) standards
  • No active, uncontrolled infection
  • Patients with prior fungal infection must have received ≥2 weeks of appropriate therapy and be clinically stable
  • Negative pregnancy test for females of childbearing potential
  • Ability to provide informed consent (≥18 years) or consent provided by parent/legal guardian

Who cannot join

  • Does not meet disease eligibility criteria
  • Inadequate organ function or uncontrolled infection
  • No suitable donor available
  • Prior allogeneic stem cell transplantation

Trial locations and contacts

1 site in 1 country.

United States1 site
  • The Children's Hospital of Philadelphia

    Philadelphia, Pennsylvania, 19103

Other trials in United States

About this study

Official title: Unrelated and Partially Matched Related Donor Peripheral Stem Cell Transplantation With Alpha/Beta T-Cell and B-Cell Depletion for Patients With Hematologic Malignancies

This is a single-arm study evaluating allogeneic hematopoietic stem cell transplantation (HSCT) using mobilized peripheral blood stem cells from unrelated or partially matched related donors that are ex vivo depleted of α/β T cells and CD19+ B cells using the CliniMACS device. The study assesses engraftment, graft-versus-host disease (GVHD), treatment-related mortality, immune reconstitution, and one-year leukemia-free survival in patients with hematologic malignancies.

Read the detailed description

This is a single-arm, prospective study evaluating the safety and efficacy of allogeneic hematopoietic stem cell transplantation (HSCT) using ex vivo α/β T-cell-depleted and CD19+ B-cell-depleted peripheral blood stem cell grafts processed with the CliniMACS device in patients with hematologic malignancies who lack matched related donors.

Participants will receive mobilized peripheral blood stem cells from unrelated or partially matched related donors. The collected stem cell products will undergo ex vivo manipulation using the CliniMACS system to selectively deplete T-cell receptor (TCR) α/β-positive T lymphocytes and CD19+ B cells while preserving CD34+ hematopoietic stem cells, natural killer (NK) cells, and γ/δ T cells. This selective depletion strategy aims to reduce the risk of graft-versus-host disease (GVHD) while maintaining engraftment potential and immune function.

All patients will receive myeloablative conditioning with either total body irradiation-based or busulfan-based regimens, with anti-thymocyte globulin administered in selected patients based on donor type and clinical indication. Routine post-transplant pharmacologic GVHD prophylaxis is not planned but may be administered at the discretion of the treating physician if clinically indicated.

The primary objectives are to evaluate engraftment (including incidence of primary graft failure and time to neutrophil and platelet recovery), incidence and severity of acute and chronic GVHD, treatment-related mortality, and one-year leukemia-free survival. Secondary objectives include assessment of immune reconstitution, incidence of viral infections (including CMV, EBV, adenovirus, and HHV-6), and correlation of outcomes with donor and recipient killer immunoglobulin-like receptor (KIR) typing.

The study will enroll approximately 110 patients over a 10-year period, with outcomes analyzed descriptively using estimates of event rates and confidence intervals. The goal of this study is to determine whether selective α/β T-cell and CD19+ B-cell depletion using the CliniMACS system improves transplant outcomes by reducing GVHD while enabling durable engraftment and enhanced immune recovery in patients receiving alternative donor transplants.

Being tested
CliniMACS α/β T-Cell and CD19+ B-Cell Depleted Peripheral Blood Stem Cell Transplant
Keywords
Transplant, Alternative Donor
Medical subject headings
Leukemia, Lymphoma, Anemia, Refractory, with Excess of Blasts

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • CliniMACS α/β T-Cell and CD19+ B-Cell Depleted Peripheral Blood Stem Cell TransplantDevice

    Allogeneic hematopoietic stem cell transplantation using mobilized peripheral blood stem cells from unrelated or partially matched related donors. The stem cell product is processed ex vivo using the CliniMACS device to selectively deplete TCR α/β T cells and CD19+ B cells prior to infusion. The final graft retains CD34+ stem cells, NK cells, and γ/δ T cells.

Study groups in NCT02323867
Study groupRoleWhat they receive
CliniMACS αβ T-Cell/CD19+ B-Cell Depleted Peripheral Blood Stem Cell TransplantExperimentalThis is a single arm study for patients with hematologic malignancies with alternative donor sources receiving unrelated or partially matched related mobilized peripheral stem cells (PSCs) using the CliniMACS system for αβ T cell depletion plus CD19+ B cell depletion to determine efficacy as determined by engraftment and GVHD, and one year leukemia free survival.
Receives: Device: CliniMACS α/β T-Cell and CD19+ B-Cell Depleted Peripheral Blood Stem Cell Transplant

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Engraftment Rate

    Number of patients achieving neutrophil engraftment, defined as absolute neutrophil count (ANC) ≥ 500/µL for 3 consecutive days

    Measured: 1-year post-transplant

  2. Number of Participants With Grade IV Acute Graft-versus-Host Disease (GVHD)

    Number of participants with of grade IV acute GVHD assessed using standard Glucksberg criteria

    Measured: Up to 100 days post-transplant

  3. Day 100 Treatment-Related Mortality (TRM)

    Death due to causes other than relapse within 100 days after stem cell infusion

    Measured: 100 days post-transplant

  4. One-Year Leukemia-Free Survival (LFS)

    Relapse or disease progression was assessed according to disease-specific standard criteria, including clinical evaluation, bone marrow examinations, peripheral blood testing, donor chimerism studies, imaging studies, and/or measurable disease assessments as appropriate for the participant's underlying malignancy. Relapse was defined as recurrence or progression of the primary disease after transplant, including reappearance of morphologic disease, increasing disease burden, loss of remission status, or other evidence of progression.

    Measured: 1-year post-transplant

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted24 Dec 2014 (estimated)
  2. Study startOct 2014
  3. Primary completionJul 2025
  4. Study completionMay 2026

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
98 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02323867
Sponsor's protocol ID
13-010495
Other IDs
13BTθ51
Acronym
AB-CliniMACs
Status last verified
Oct 2026
First submitted
22 Oct 2014
Last updated
6 Oct 2026
Data monitoring committee
Yes
Individual data sharing
No

Publications

  • Finke J, Bethge WA, Schmoor C, Ottinger HD, Stelljes M, Zander AR, Volin L, Ruutu T, Heim DA, Schwerdtfeger R, Kolbe K, Mayer J, Maertens JA, Linkesch W, Holler E, Koza V, Bornhauser M, Einsele H, Kolb HJ, Bertz H, Egger M, Grishina O, Socie G; ATG-Fresenius Trial Group. Standard graft-versus-host disease prophylaxis with or without anti-T-cell globulin in haematopoietic cell transplantation from matched unrelated donors: a randomised, open-label, multicentre phase 3 trial. Lancet Oncol. 2009 Sep;10(9):855-64. doi: 10.1016/S1470-2045(09)70225-6. Epub 2009 Aug 18.

    PubMed 19695955
  • Di Bartolomeo P, Santarone S, De Angelis G, Picardi A, Cudillo L, Cerretti R, Adorno G, Angelini S, Andreani M, De Felice L, Rapanotti MC, Sarmati L, Bavaro P, Papalinetti G, Di Nicola M, Papola F, Montanari M, Nagler A, Arcese W. Haploidentical, unmanipulated, G-CSF-primed bone marrow transplantation for patients with high-risk hematologic malignancies. Blood. 2013 Jan 31;121(5):849-57. doi: 10.1182/blood-2012-08-453399. Epub 2012 Nov 19.

    PubMed 23165479
  • Barge RM, Starrenburg CW, Falkenburg JH, Fibbe WE, Marijt EW, Willemze R. Long-term follow-up of myeloablative allogeneic stem cell transplantation using Campath "in the bag" as T-cell depletion: the Leiden experience. Bone Marrow Transplant. 2006 Jun;37(12):1129-34. doi: 10.1038/sj.bmt.1705385.

    PubMed 16757974
  • Fuchs EJ. Human leukocyte antigen-haploidentical stem cell transplantation using T-cell-replete bone marrow grafts. Curr Opin Hematol. 2012 Nov;19(6):440-7. doi: 10.1097/MOH.0b013e32835822dc.

    PubMed 22954723
  • Quinones RR, Gutierrez RH, Dinndorf PA, Gress RE, Ney AB, Taylor B, Karandish S, Carter CS, Luban NL, Reaman GH. Extended-cycle elutriation to adjust T-cell content in HLA-disparate bone marrow transplantation. Blood. 1993 Jul 1;82(1):307-17.

    PubMed 8324231
  • Schattenberg A, De Witte T, Preijers F, Raemaekers J, Muus P, Van der Lely N, Boezeman J, Wessels J, Van Dijk B, Hoogenhout J, et al. Allogeneic bone marrow transplantation for leukemia with marrow grafts depleted of lymphocytes by counterflow centrifugation. Blood. 1990 Mar 15;75(6):1356-63.

    PubMed 2310832
  • Soiffer RJ, Murray C, Cochran K, Cameron C, Wang E, Schow PW, Daley JF, Ritz J. Clinical and immunologic effects of prolonged infusion of low-dose recombinant interleukin-2 after autologous and T-cell-depleted allogeneic bone marrow transplantation. Blood. 1992 Jan 15;79(2):517-26.

    PubMed 1730094
  • Watts MJ, Somervaille TC, Ings SJ, Ahmed F, Khwaja A, Yong K, Linch DC. Variable product purity and functional capacity after CD34 selection: a direct comparison of the CliniMACS (v2.1) and Isolex 300i (v2.5) clinical scale devices. Br J Haematol. 2002 Jul;118(1):117-23. doi: 10.1046/j.1365-2141.2002.03561.x.

    PubMed 12100134
  • Champlin RE, Passweg JR, Zhang MJ, Rowlings PA, Pelz CJ, Atkinson KA, Barrett AJ, Cahn JY, Drobyski WR, Gale RP, Goldman JM, Gratwohl A, Gordon-Smith EC, Henslee-Downey PJ, Herzig RH, Klein JP, Marmont AM, O'Reilly RJ, Ringden O, Slavin S, Sobocinski KA, Speck B, Weiner RS, Horowitz MM. T-cell depletion of bone marrow transplants for leukemia from donors other than HLA-identical siblings: advantage of T-cell antibodies with narrow specificities. Blood. 2000 Jun 15;95(12):3996-4003.

    PubMed 10845940
  • Handgretinger R, Schumm M, Lang P, Greil J, Reiter A, Bader P, Niethammer D, Klingebiel T. Transplantation of megadoses of purified haploidentical stem cells. Ann N Y Acad Sci. 1999 Apr 30;872:351-61; discussion 361-2. doi: 10.1111/j.1749-6632.1999.tb08479.x.

    PubMed 10372137
  • Chen X, Hale GA, Barfield R, Benaim E, Leung WH, Knowles J, Horwitz EM, Woodard P, Kasow K, Yusuf U, Behm FG, Hayden RT, Shurtleff SA, Turner V, Srivastava DK, Handgretinger R. Rapid immune reconstitution after a reduced-intensity conditioning regimen and a CD3-depleted haploidentical stem cell graft for paediatric refractory haematological malignancies. Br J Haematol. 2006 Nov;135(4):524-32. doi: 10.1111/j.1365-2141.2006.06330.x. Epub 2006 Sep 28.

    PubMed 17010105
  • Ash RC, Horowitz MM, Gale RP, van Bekkum DW, Casper JT, Gordon-Smith EC, Henslee PJ, Kolb HJ, Lowenberg B, Masaoka T, et al. Bone marrow transplantation from related donors other than HLA-identical siblings: effect of T cell depletion. Bone Marrow Transplant. 1991 Jun;7(6):443-52.

    PubMed 1873591
  • Casper J, Camitta B, Truitt R, Baxter-Lowe LA, Bunin N, Lawton C, Murray K, Hunter J, Pietryga D, Garbrecht F, et al. Unrelated bone marrow donor transplants for children with leukemia or myelodysplasia. Blood. 1995 May 1;85(9):2354-63.

    PubMed 7727769
  • Bunin N, Aplenc R, Grupp S, Pierson G, Monos D. Unrelated donor or partially matched related donor peripheral stem cell transplant with CD34+ selection and CD3+ addback for pediatric patients with leukemias. Bone Marrow Transplant. 2006 Jan;37(2):143-9. doi: 10.1038/sj.bmt.1705211.

    PubMed 16284615
  • Bunin NJ, Casper JT, Lawton C, Murray K, Camitta BM, Greenwood M, Geil J, Ash RC. Allogeneic marrow transplantation using T cell depletion for patients with juvenile chronic myelogenous leukemia without HLA-identical siblings. Bone Marrow Transplant. 1992 Feb;9(2):119-22.

    PubMed 1571710

Questions about this trial

What is this clinical trial studying?

A study testing CliniMACS α/β T-Cell and CD19+ B-Cell Depleted Peripheral Blood Stem Cell Transplant in people with Leukemia and Lymphoma, run by Children's Hospital of Philadelphia at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 18 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 6 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Yes. Results are posted in the registry (first posted 6 Oct 2026). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Engraftment Rate (time frame: 1-year post-transplant). The study lists 4 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02323867, which also lists 36 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 6 Oct 2026; AzTrials last refreshed its copy on 26 Oct 2026.

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