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CompletedNCT01634217Updated Jan 18, 2019

Inducible Regulatory T Cells (iTregs) in Non-Myeloablative Sibling Donor Peripheral Blood Stem Cell Transplantation

A Phase 1 interventional study of iTreg in Acute Myelogenous Leukemia, Acute Lymphocytic Leukemia and Chronic Myelogenous Leukemia, sponsored by Masonic Cancer Center, University of Minnesota. Completed at 1 site in United States. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2019-01-18.

Sponsored by Masonic Cancer Center, University of Minnesota · Phase 1, Interventional, and Treatment

Phase
Phase 1
Study type
Interventional
Enrollment
16
Allocation
Non-randomized
Ages
18 Years to 75 Years
Sex
All
01

Study summary

This is a phase I single center dose escalation study with an extension at the best available dose to determine the tolerability of inducible regulatory T cells (iTregs) when given to adult patients undergoing non-myeloablative HLA-identical sibling donor peripheral blood stem cell (PBSC) transplantation for the treatment of a high risk malignancy. Up to 5 dose cohorts will be tested. Once the tolerable dose is determined for iTregs, enrollment will continue with an additional 10 patients using sirolimus/Mycophenolate mofetil (MMF) graft-versus-host disease (GVHD) prophylaxis to gain further safety information and to provide pilot data in this treatment setting.

Read the detailed description

Co-enrollment in University Of Minnesota protocol MT2001-10 is required and transplantation will be according to that protocol with iTregs administered the morning of day 0 followed no sooner than 4 hours later by the PBSC transplantation.

02

Conditions studied

  • Acute Myelogenous Leukemia
  • Acute Lymphocytic Leukemia
  • Chronic Myelogenous Leukemia
  • Non-Hodgkin Lymphoma
  • Hodgkin Lymphoma
  • Chronic Lymphocytic Leukemia
  • Multiple Myeloma
  • Myelodysplastic Syndrome
03

In context

Lymphoma

5,578 studies on the registry are indexed under Lymphoma; 825 are open to participants now.

This study's enrollment of 16 is below the median of 40 across 4,509 interventional studies indexed under Lymphoma.

Browse Lymphoma studies →

Lead sponsor

Masonic Cancer Center, University of Minnesota is the lead sponsor of 284 studies on the registry; 34 are open to participants now.

Of its 39 completed or terminated interventional studies of FDA-regulated products, 28 (72%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • 18 - 75 years of age with an HLA-identical sibling donor
  • One of the following disease categories:

    • Acute myelogenous leukemia - high risk CR1 (as evidenced by preceding MDS, intermediate to high risk cytogenetics, ≥ 2 cycles to obtain CR, erythroblastic or megakaryocytic leukemia; CR2+. All patients must be in CR as defined by hematological recovery (ANC > 0.5x 109/L), AND \<5% blasts by light microscopy within the bone marrow with a cellularity of ≥15%.
    • Acute lymphocytic leukemia - high risk CR1 [t(9;22), t (1:19), t(4;11) or other MLL rearrangements] or >1cycle to obtain CR; CR2+. All patients must be in CR as defined by hematological recovery (ANC > 0.5x 109/L), AND \<5% blasts by light microscopy within the bone marrow with a cellularity of ≥15%.
    • Chronic myelogenous leukemia all types except blast crisis (note treated blast crisis in chronic phase is eligible)
    • Non-Hodgkin lymphoma or Hodgkin lymphoma demonstrating chemosensitive disease
    • Myelodysplastic syndrome with severe pancytopenia, leading to either transfusion dependency or increased risk for infections
  • Performance status: Karnofsky ≥ 60%
  • Adequate organ function within 28 days of study enrollment defined as:

    • Liver: SGOT and SGPT \< 5.0 x ULN; total bilirubin \< 3 x ULN
    • Renal: serum creatinine \< 2.0 mg/dl or glomerular filtration rate (GFR) > 40 mL/min/1.73m2. Patients with a creatinine > 1.2 mg/dl or a history of renal dysfunction must have glomerular filtration rate (GFR) > 40 mL/min/1.73m2
    • Albumin: > 2.5 g/dL
    • Cardiac: No decompensated CHF or uncontrolled arrhythmia; ejection fraction > 35% within 6 weeks prior to study enrollment
    • Pulmonary: No O2 requirements; DLCO > 30% predicted within 6 weeks prior to study enrollment
  • If recent mold infection (e.g. aspergillus) must have minimum of 30 days of therapy and responsive disease and be cleared by Infectious Disease
  • Sexually active females of child bearing potential and males must agree to use effective contraception for the duration of the transplant period
  • Voluntary written consent

Exclusion criteria

Exclusion Criteria:

  • Pregnancy or breast feeding - women of childbearing potential must have a negative pregnancy test within 28 days of study enrollment.
  • Prior myeloablative transplant within previous 3 months of study enrollment.
  • Evidence of HIV infection or known HIV positive serology.
  • Active serious infection.
05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Single group
Masking
None (open label)
Enrollment
16 participants (actual)

Study arms

  • Experimental
    Cohort 1

    Administered 3 x 10\^6 iTregs/kg infusion

    Biological: iTreg

  • Experimental
    Cohort 2

    Administered 3 x 10\^7 iTregs/kg infusion

    Biological: iTreg

  • Experimental
    Cohort 3

    Administered 3 x 10\^8 iTregs/kg infusion

    Biological: iTreg

  • Experimental
    Cohort 4

    Administered 10 x 10\^8 iTregs/kg infusion

    Biological: iTreg

  • Experimental
    Cohort 5 Extension

    Administered 10 x 10\^8 iTregs/kg or best available dose using sirolimus/MMF as graft-versus-host disease (GVHD) prophylaxis. Immunosuppression will consist of a combination of sirolimus and mycophenolate mofetil (MMF). Sirolimus will be administered starting at day -3 with 8mg-12mg oral loading dose followed by single dose 4 mg/day. MMF will be administered starting on day -3 at a dose of 3 gram/day divided in 2 or 3 doses. Intravenous (IV) route between days -3 and +5, then may change to PO between days +6 and +30. Stop MMF at day +30 or 7 days after engraftment, whichever day is later, if no acute GVHD.

    Biological: iTreg

Interventions

  • BiologicaliTreg

    The iTregs will be infused at the assigned dose without a filter or pump slowly by gravity over 15-60 minutes. The iTregs should be given at least 4 hours before the peripheral blood stem cell (PBSC) infusion (MT2001-10).

06

What researchers measure

Primary outcomes

  1. Incidence of grade 3-5 infusional toxicity

    Targeted adverse events and unexpected events not explained by the PBSCT or disease will be collected \[(1-4 hours after the iTreg infusion and before the PBSCT at day 0) and 24 hours and 48 hours after the iTreg infusion (+/- 2 hours)\]

    Time frame: Within 48 Hours After iTregs Administration

Secondary outcomes

  1. Cumulative incidence of grade II-IV acute graft-versus-host disease (GVHD)

    Graft-versus-host disease (GVHD) is a complication that can occur after a stem cell or bone marrow transplant in which the newly transplanted material attacks the transplant recipient's body. Abstracted from the routine clinical data collected for the primary transplant protocol (MT2001-10).

    Time frame: Day 100

  2. Incidence of chronic graft-versus-host disease (GVHD)

    Graft-versus-host disease (GVHD) is a complication that can occur after a stem cell or bone marrow transplant in which the newly transplanted material attacks the transplant recipient's body. Abstracted from the routine clinical data collected for the primary transplant protocol (MT2001-10).

    Time frame: 12 Months

  3. Relapse of Disease

    The return of signs and symptoms of a disease after a remission.

    Time frame: 12 Months

  4. Survival

    Number (count) of patients alive at 1 year after treatment.

    Time frame: 1 Year

  5. Survival

    Number (count) of patients alive at Day 100.

    Time frame: Day 100

07

Study locations

1 site
  • Masonic Cancer Center, University of Minnesota
    Minneapolis, Minnesota 55455, United States
08

References and documents

Publications

  • MacMillan ML, Hippen KL, McKenna DH, Kadidlo D, Sumstad D, DeFor TE, Brunstein CG, Holtan SG, Miller JS, Warlick ED, Weisdorf DJ, Wagner JE, Blazar BR. First-in-human phase 1 trial of induced regulatory T cells for graft-versus-host disease prophylaxis in HLA-matched siblings. Blood Adv. 2021 Mar 9;5(5):1425-1436. doi: 10.1182/bloodadvances.2020003219. PubMed 33666654 ↗
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 18, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01634217
Lead sponsor
Masonic Cancer Center, University of Minnesota
Responsible party
Sponsor
First posted
Jul 6, 2012
Start date
Nov 8, 2013
Primary completion
Dec 1, 2017
Completion
Dec 1, 2018
Last update
Jan 18, 2019

Study contacts

Margaret MacMillan, MD
principal investigator · Masonic Cancer Center, University of Minnesota

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jan 2019. You cannot join it, but the record below documents what was studied.

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