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Not yet taking people in United StatesPhase 2

Modified donor stem cells against transplant complications in non-cancer diseases

Tests modified donor stem cells for non-cancer blood or immune diseases.

Key facts

Who runs it
Fred Hutchinson Cancer Center
Where
Seattle, United StatesSee the 2 sites
Trial code
Registry title
Naive T Cell Deplete Grafts for GVHD Prevention in Non-Malignant Diseases
Status
Not yet recruiting
Phase
Phase 2
People taking part
40 people, planned
Started
Sept 2026
Expected to end
Sept 2035
Type of study
Interventional, 2 groups
Treatments tested
  • ALLOGENEIC CD34+ ENRICHED AND CD45RA- DEPLETED PBSCs
Record updated
22 June 2026

Who can take part

Age
6 months to 50 years
Sex
Women and men
Healthy volunteers
Cannot take part

The registry criteria, word for word

Show all 18 criteriaShow less

Who can take part

  • Considered appropriate candidate for allogeneic HCT following low dose (4Gy) TBI containing-conditioning and have one of the following diagnoses: A) BMF B)Hemoglobinopathies C)PID D) Autoimmune cytopenias E) Immune dysregulation F) HLH G) Other NMD treatable by HCT and NMD that is not clearly defined (a patient with a NMD for whom genetic testing has been done and a genetic mutation responsible for their NMD phenotype has not been identified) are eligible for the study following discussion with and approval by the protocol PI
  • Patients aged 6 months- 5 years old (inclusive) at the time of informed consent
  • Patient with suitable HCT donor (see inclusion criteria below)
  • Recipient informed consent/assent (13 years and older), and/or legal guardian permission must be obtained

Who cannot take part

  • Patients who are positive for HIV-1, HIV-2
  • Patients with current neoplastic disorders
  • Patients with uncontrolled infections for whom HCT is considered contraindicated by the consulting infectious disease physician
  • Patients with organ dysfunction including A) Renal insufficiency B) Impaired cardiac function C)Impaired pulmonary function D) Liver dysfunction
  • Patients with any other significant medical conditions that would make them unsuitable for transplantation, as determined by the PI
  • Patients with a known hypersensitivity to tacrolimus or MMF
  • Patients of childbearing age who are presumed to be fertile and are unwilling to use an effective birth control method or refrain from sexual intercourse during and for 12 months post-HCT
  • Patient with aplastic anemia
  • Patients with severe combined immunodeficiency (SCID)
  • Fanconi anemia
  • Dyskeratosis congenita
  • Patient weight > 100 kg
  • Patients who are pregnant or breast-feeding
  • Patients on other experimental protocols for prevention of GVHD

Where in United States

  • Fred Hutchinson Cancer CenterSeattle, United StatesContact: Madhavi Lakkaraja, MD, MPHNot yet recruiting
  • Seattle Children's HospitalSeattle, United StatesContact: Madhavi Lakkaraja, MD, MPHNot yet recruiting

About the trial

What the trial wants to find out

This phase II trial investigates how well a naive T cell depleted graft work for the reduction of graft versus host disease in patients with non-malignant diseases requiring hematopoietic cell transplantation. Giving chemotherapy and total-body irradiation before a donor peripheral blood stem cell transplant helps stop the growth of cells in the bone marrow, including normal blood-forming cells (stem cells) and cancer cells. It may also stop the patient's immune system from rejecting the donor's stem cells. When the healthy stem cells from a donor are infused into the patient, they may help the patient's bone marrow make stem cells, red blood cells, white blood cells, and platelets. The donated stem cells may also replace the patient's immune cells and help destroy any remaining cancer cells.

The 2 groups in the trial

  • Arm A (HLA-Haploidentical or mismatched unrelated donor)Other group

    Conditioning regimen for HLA-Haploidentical or mismatched unrelated donor consisting of Cyclophosphamide (50 mg/kg x1 day), Fludarabine 35 mg/m2/day x 5 days, Thiotepa (5 mg/kg/day x 2 days), TBI (200 cGy x 2). Tacrolimus starting Day -1, MMF D0-35.

    Treatment: ALLOGENEIC CD34+ ENRICHED AND CD45RA- DEPLETED PBSCs

  • Arm B (HLA-matched related or matched unrelated donor )Other group

    Conditioning regimen for HLA-matched related or matched unrelated donor consisting of Cyclophosphamide (50 mg/kg x1 day), Fludarabine (30 mg/m2/day x 5 days), Thiotepa (5 mg/kg/day x 2 days), TBI (200 cGy x 2). Tacrolimus starting Day -1, MMF D0-35.

    Treatment: ALLOGENEIC CD34+ ENRICHED AND CD45RA- DEPLETED PBSCs

Questions to ask the study team

  1. How often do I need to come in, and for how long each time?
  2. Are travel costs paid?
  3. Can I keep my own doctor?
  4. What happens if I want to stop?

Contact the study team: see the registry record → Contacts and Locations

Print a page for my doctor

Data and sources

Registry record
Listed on ClinicalTrials.gov.
Official title
A Phase II Prospective Study Evaluating Selective Depletion of CD45RA+ (Naïve) T Cells (TND) From Peripheral Blood Stem Cell (PBSC) Grafts for Prevention of Graft Versus Host Disease (GVHD) in Non-Malignant Diseases (NMDs)
Plain-language title
Modified donor stem cells against transplant complications in non-cancer diseasesGenerated from the registry record. The registry title is the official one.
Record updated
22 June 2026