Precision-T: A Randomized Phase III Study of Orca-T in Recipients Undergoing Allogeneic Transplantation for Hematologic Malignancies (Orca-T)
Acute Myeloid Leukemia, Acute Lymphoid Leukemia, Mixed Phenotype Acute Leukemia
About this trial
This is an interventional treatment trial for Acute Myeloid Leukemia focused on measuring hematopoietic stem cell transplantation, acute leukemia, Myelodysplastic syndromes, matched related donor, matched unrelated donor, myelodysplastic syndrome
Eligibility Criteria
Key Inclusion Criteria:
- Matched to a related or unrelated donor who is an 8/8 match for HLA-A, -B, -C, and DRB1
Diagnosed with one of the following diseases:
- Acute myeloid, lymphoid or mixed phenotype leukemia in complete remission (CR) or CR with incomplete hematologic recovery (CRi), with or without the presence of known minimal residual disease
- Myelodysplastic syndromes (MDS) that are indicated for alloHSCT per 2017 International Expert Panel recommendations and/or have therapy-related/secondary MDS, with ≤ 10% blast burden in the bone marrow
Planned to undergo MA-alloHCT including one of the following myeloablative conditioning regimens:
- TBI/Cy
- TBI/Etoposide
- BFT
- Cardiac ejection fraction at rest ≥ 45% or shortening fraction of ≥ 27% by echocardiogram or radionuclide scan (MUGA)
- Diffusing capacity of the lung for carbon monoxide (DLCO) (adjusted for hemoglobin) ≥ 50%
- Negative serum or urine beta-HCG test in females of childbearing potential
- ALT/AST < 3 times ULN
- Recipients in screening must screen negative for SARS-CoV-2 RNA using a PCR-based test
- Disease Risk Index (DRI) overall risk categorization of intermediate or high
- Total bilirubin ≤ upper limit of normal (ULN)
- Estimated glomerular filtration rate (eGFR) ≥ 60 mL/minute
Key Exclusion Criteria:
- Prior allogeneic HCT
- Currently receiving corticosteroids or other immunosuppressive therapy. Topical corticosteroids or oral systemic corticosteroid doses less than or equal to 10 mg/day are allowed.
- Planned donor lymphocyte infusion (DLI)
- Planned pharmaceutical in vivo or ex vivo T cell depletion
- Recipient positive anti-donor HLA antibodies against a mismatched allele in the selected donor
- Karnofsky performance score < 70%
- Hematopoietic cell transplantation-specific Comorbidity Index (HCT-CI) > 4
- Uncontrolled bacterial, viral or fungal infections at time of enrollment
- Seropositive for HIV-1 or -2, HTLV-1 or -2, Hepatitis B sAg, Hepatitis C antibody
- Known allergy or hypersensitivity to, or intolerance of, tacrolimus
- Documented allergy or hypersensitivity to iron dextran or bovine, murine, algal or Streptomyces avidinii proteins
- Any uncontrolled autoimmune disease requiring active immunosuppressive treatment
- Concurrent malignancies or active disease within 1 year, except non-melanoma skin cancers that have been curatively resected
- Psychosocial circumstances that preclude the patient being able to go through transplant or participate responsibly in follow up care
- Women who are pregnant or breastfeeding
- Women of childbearing potential (WOCBP) or men who have sexual contact with WOCBP unwilling to use effective forms of birth control or abstinence for one year after transplantation
Sites / Locations
- City of HopeRecruiting
- Ronald Regan UCLA Medical CenterRecruiting
- UC DavisRecruiting
- Stanford Health CareRecruiting
- Colorado Blood Cancer InstituteRecruiting
- University of Miami Hospital and Clinics - Sylvester Comprehensive Cancer CenterRecruiting
- Moffitt Cancer CenterRecruiting
- Winship Cancer Institute - Emory UniversityRecruiting
- University of ChicagoRecruiting
- Massachusetts General HospitalRecruiting
- University of Michigan Health System - Michigan MedicineRecruiting
- Weill Cornell Medicine - New York-Presbyterian HospitalRecruiting
- Memorial Sloan Kettering Cancer CenterRecruiting
- Cleveland ClinicRecruiting
- OU Health Stephenson Cancer CenterRecruiting
- Oregon Health & Sciences University - Knight Cancer InstituteRecruiting
- Vanderbilt UniversityRecruiting
- Sarah Cannon Research InstituteRecruiting
- University of UtahRecruiting
Arms of the Study
Arm 1
Arm 2
Experimental
Active Comparator
Orca-T
Standard of Care alloHCT Control
For patients randomized to the Orca-T arm, Orca-T will be administered after myeloablative conditioning regimen. Single-agent GVHD prophylaxis with tacrolimus will be administered following Tcon infusion (generally Day +3).
For patients randomized to the standard-of-care control arm, an unmanipulated allograft derived from the peripheral blood of a matched donor will be administered after a myeloablative conditioning regimen. Dual-agent prophylaxis consisting of tacrolimus plus methotrexate will be administered starting on Day -3.