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OpenTrials
Active, Not Recruiting

NCT Number: NCT05589896

A First-in-Human Study of HLA-Partially to Fully Matched Allogenic Cryopreserved Deceased Donor Bone Marrow Transplantation for Patients With Hematologic Malignancies

The goal of this clinical trial is to determine the safety and feasibility of allogeneic transplantation with bone marrow from a deceased donor in patients with acute and chronic leukemias, myelodysplastic syndrome, and certain lymphomas. Patients will either receive myeloablative conditioning or reduced intensity conditioning regimen prior to the transplant. Patients will be followed for 56 days for safety endpoints and remain in follow-up for one year.

Active, Not Recruiting

This study is active but is not currently recruiting participants.

Key information

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Patient has the ability to provide informed consent according to the applicable regulatory and local institutional requirements
  • Male or female, aged ≥18 and ≤65 years for patients receiving MAC (Regimen A or Regimen B); aged ≥18 and ≤75 years for patients receiving RIC (Regimen C or D)
  • Patient must require allogeneic HCT per the discretion of the treating physician
  • Patient must be high-resolution, HLA partially or fully matched (4-8/8 allele matched at HLA-A, -B, -C, DRB1) to an available Ossium HPC, Marrow product
  • Stated willingness to comply with all study procedures and availability for the duration of the study
  • Diagnosed with malignant hematologic disease including:
  • Acute leukemia [acute lymphoblastic leukemia (ALL), acute myeloid leukemia (AML), acute biophenotypic leukemia (ABL), or acute undifferentiated leukemia (AUL)], MDS without fibrosis, or chronic leukemia (CLL, CML) in the first remission or beyond with ≤5% marrow blasts documented by bone marrow assessment and no circulating blasts or extra-medullary disease within 42 days prior to anticipated start of conditioning
  • Chemosensitive non-Hodgkin's lymphomas, Hodgkin's lymphoma, or cutaneous T cell lymphomas in the first remission or beyond documented by PET/CT imaging and bone marrow assessment within 42 days prior to anticipated start of conditioning
  • Karnofsky performance status score ≥70% (MAC) or ≥60% (RIC)
  • HCT comorbidity index (HCT-CI) ≤5
  • Adequate organ function defined as:
  • Cardiac: LVEF at rest ≥40% (RIC) or LVEF at rest ≥45% (MAC)
  • Pulmonary: DLCO, FEV1, FVC ≥50% predicted by pulmonary function tests (PFTs). DLCO value may be corrected for hemoglobin.
  • Hepatic: total bilirubin ≤2.0 mg/dL, and ALT, AST, and ALP <3 x upper limit normal (ULN), unless ALT, AST, and/or ALP are disease related
  • Renal: SCr within 1.5x normal range for age. If SCr is outside normal range for age, CrCl> 60 mL/min/1.73m2 must be obtained (measured by 24-hour urine specimen or nuclear glomerular filtration rate (GFR), or calculated GFR)

Exclusion criteria

  • Availability of suitable graft from living donor (defined as 7/8 or 8/8 HLA-matched related or unrelated donors, haploidentical donors, or cord blood donors)
  • Prior autologous or allogeneic HCT
  • Pregnancy or lactation
  • Ongoing treatment with an investigational drug used for disease-related treatment within 5 half-lives of the drug
  • Current uncontrolled bacterial, viral or fungal infection defined as currently taking medication with evidence of progression of clinical symptoms or radiologic findings
  • Any condition(s) or diagnosis, both physical or psychological, or physical exam finding that in the investigator's opinion precludes participation

Treatment and study plan

Ossium HPC Marrow, Bone Marrow Transplant

Other

Hematopoetic Cell Transplantation

Pre-transplant conditioning - Myeloablative (MAC)

Other

Regimen A or Regimen B

Other names: Busuflex, Fludara, TBI

Pre-transplant conditioning - Reduced Intensity (RIC)

Other

Regimen C or Regimen D

Other names: Fludara, Cytoxan, Mesnex, TBI, Melphalan

Post-transplant treatment

Other

Post-transplant treatment

Other names: Cytoxan, Mesnex, CellCept, Filgrastim

Primary outcomes

  1. Neutrophil Engraftment

    Time frame: Day 28

    Neutrophil engraftment is defined as achieving an absolute neutrophil count (ANC) of greater than or equal to 500/µL for 3 consecutive measurements on 3 different days by Day 28.

  2. Serious Adverse Events

    Time frame: Day 56

    Occurrence of any event classified as SAE. The time of occurrence of each serious adverse event will be recorded.

  3. CTCAE Grade 3/4 Adverse Events (AEs)

    Time frame: Day 56

    Occurrence of any event classified as grade 3/4 AE attributed to Ossium HPC, Marrow per the CTCAE v5.0 guidelines. The time of the occurrence of each event will be recorded.

  4. CTCAE Grade 3/4 Adverse Events (AEs) attributed to infusion of Ossium HPC, Marrow

    Time frame: Day 28

    Occurrence of any event classified as grade 3 or higher attributed to Ossium HPC, Marrow infusion per the CTCAE v5.0 guidelines. The time of the occurrence will be recorded.

  5. Death

    Time frame: Day 56

    The time of death will be recorded for each expired patient.

Secondary outcomes

  1. Cumulative incidences of neutrophil engraftment

    Time frame: Day 28

    Neutrophil engraftment in defined as achieving an absolute neutrophil count (ANC) of greater than or equal to 500/µL for 3 consecutive measurements on different days by Day 28.

  2. Cumulative incidences of platelet recovery

    Time frame: Day 56

    Platelet recovery is defined as platelets greater than or equal to 20,000/µL for 3 consecutive days in the absence of transfusion for 7 consecutive days by Day 56.

  3. Cumulative incidence of disease relapses

    Time frame: Day 365

    The cumulative incidence of relapse is measured from the date of transplant (Day 0) until the date of relapse or progression; patients not known to have relapsed are censored on the date they were last examined; patients who died without relapse are counted as a competing cause of failure.

  4. Transplant-related mortality (TRM)

    Time frame: Day 100 and Day 365

    TRM is defined as death without evidence of disease progression or recurrence.

  5. Cumulative incidences of acute (aGVHD) Graft Versus Host Disease

    Time frame: Day 100, Day 180, and Day 365

    aGVHD is defined as any skin, gastrointestinal or liver abnormalities fulfilling the criteria of grades II-IV or grades III-IV.

  6. Cumulative incidences of chronic (cGVHD) Graft Versus Host Disease

    Time frame: Day 100, Day 180, and Day 365

    cGVHD is defined per National Institutes of Health (NIH) Consensus Criteria and includes organ involvement and severity, and overall global composite score (mild/moderate/severe).

  7. Incidence of clinically-significant infections

    Time frame: Day 100 and Day 365

    A clinically significant infection is defined as any microbiologic or radiographic infection for which antimicrobial therapy was administered.

Other outcomes

  1. Length of Stay in Hospital

    Time frame: Day 100 and Day 365

    Cumulative days alive and out of the hospital in the first 100 days and in the first year post-transplant.

  2. Time to provide Ossium product to the patient from product availability request

    Time frame: Day 365

    Time from preliminary search to find a donor match in the Ossium registry and the time to provide Ossium HPC, Marrow product to recipient (time from donor availability request to delivery of product to transplant center).

Sponsors and collaborators

Lead sponsor

Ossium Health, Inc.

Industry

Registry information

Important dates

Study start
2024
Primary completion
2026
Study completion
2029
First posted
Oct 21, 2022
Registry last updated
Jul 20, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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