• Overall survival (OS) [ Time Frame: At 2 years ]
  Death will be considered as the event, and the OS distribution will be estimated for each group by the Kaplan-Meier method, starting from the time of HCT. A 90% CI will be constructed at the 1 and 2-year post-HCT time points.
• Relapse [ Time Frame: At 2 years ]
  Will be defined as recurrence of leukemia (>= 5% leukemic blasts by flow or morphology) in bone marrow, circulating leukemic blasts or extramedullary disease (extramedullary disease definite i.e. proven by biopsy or probably based on clinical assessment if biopsy not feasible). Lower levels of leukemia in bone marrow or blood will be recorded and reported as 'measurable residual disease' but will not be considered relapse.
• Proportion of patients alive and off prednisone (or equivalent systemic corticosteroid) for treatment of GVHD [ Time Frame: At 3, 6, 9, 12, 15, 18, 21, 24 months post HCT ]
• Graft rejection or irreversible graft failure (> 14 days duration) [ Time Frame: At 2 years ]
  Will be operationally defined as failure to achieve an absolute neutrophil count (ANC) >= 0.5 x 10^9/L before death or second HCT, or decrease to ANC < 0.1 x 10^9/L for 14 consecutive days (date of graft failure defined as the 14th day) after an established donor graft despite daily administration of granulocyte colony-stimulating factor (subcutaneously or intravenously) and =< 20% bone marrow cellularity on bone marrow aspirate or biopsy any time in the first 2 years following HCT. If the delay or reduction in ANC is due to relapse (as determined by histopathology, flow cytometry or cytogenetic or molecular studies) this will not be considered graft failure. If a patient dies from organ toxicity and/or infection prior to day 28 without ANC >= 0.5 x 10^9/L this will not be considered graft failure.
• Incidence of chronic GVHD [ Time Frame: Up to 2 years ]
  Will be defined and graded based on NIH criteria and graded operationally as the occurrence of compatible symptoms.

• Overall survival (OS) [ Time Frame: At 2 years ]
  Death will be considered as the event, and the OS distribution will be estimated for each group by the Kaplan-Meier method, starting from the time of HCT. A 90% CI will be constructed at the 1 and 2-year post-HCT time points.
• Relapse [ Time Frame: At 2 years ]
  Will be defined as recurrence of leukemia (>= 5% leukemic blasts by flow or morphology) in bone marrow, circulating leukemic blasts or extramedullary disease (extramedullary disease definite i.e. proven by biopsy or probably based on clinical assessment if biopsy not feasible). Lower levels of leukemia in bone marrow or blood will be recorded and reported as 'measurable residual disease' but will not be considered relapse.
• Proportion of patients alive and off prednisone (or equivalent systemic corticosteroid) for treatment of GVHD [ Time Frame: At 3, 6, 9, 12, 15, 18, 21, 24 months post HCT ]
• Graft rejection or graft failure (> 14 days duration) [ Time Frame: At 2 years ]
  Will be operationally defined as failure to achieve an absolute neutrophil count (ANC) >= 0.5 x 10^9/L before death or second HCT, or decrease to ANC < 0.1 x 10^9/L for 14 consecutive days (date of graft failure defined as the 14th day) after an established donor graft despite daily administration of granulocyte colony-stimulating factor (subcutaneously or intravenously) and =< 20% bone marrow cellularity on bone marrow aspirate or biopsy any time in the first 2 years following HCT. If the delay or reduction in ANC is due to relapse (as determined by histopathology, flow cytometry or cytogenetic or molecular studies) this will not be considered graft failure. If a patient dies from organ toxicity and/or infection prior to day 28 without ANC >= 0.5 x 10^9/L this will not be considered graft failure.
• Incidence of chronic GVHD [ Time Frame: Up to 3 years ]
  Will be defined and graded based on NIH criteria and graded operationally as the occurrence of compatible symptoms.

OUTLINE:

Patients are randomized to 1 of 3 arms.

ARM A: Patients undergo total-body irradiation (TBI) twice daily (BID) on days -10 to -7, and receive thiotepa intravenously (IV) over 3 hours on days -6 and -5, fludarabine IV over 30 minutes on days -6 to -2, tacrolimus (or cyclosporine or sirolimus if toxicities occur) IV continuously starting on day -1, CD34+ enriched CD45RA-depleted donor T-lymphocytes IV on day 0, and methotrexate IV on days 1, 3, 6, and 11. If there is no evidence of grade II-IV acute GVHD on or prior to day 50, tacrolimus (or cyclosporine or sirolimus) is tapered per month for capsules (or per week for liquid).

ARM C: Patients undergo TBI BID on days -4 to -2 or -3 to -1, and receive PBSC IV on day 0. Patients also receive cyclophosphamide IV over 1 hour on days 3 and 4, and tacrolimus (or cyclosporine or sirolimus if toxicities occur) IV continuously starting on day 5. If there is no evidence of grade II-IV acute GVHD on or prior to day 50, tacrolimus (or cyclosporine or sirolimus) is tapered per month for capsules (or per week for liquid).

ARM D: Patients undergo TBI BID on days -6 to -4, and receive cyclophosphamide IV over 1 hour on days -3 to -2, tacrolimus (or cyclosporine or sirolimus if toxicities occur) IV continuously starting on day -1, PBSC IV on day 0, and methotrexate IV on days 1, 3, 6, and 11. If there is no evidence of grade II-IV acute GVHD on or prior to day 50, tacrolimus (or cyclosporine or sirolimus) is tapered per month for capsules (or per week for liquid).

After completion of study treatment, patients are followed up at days 7, 14, 21, 28, 56, 80, 180, and 270 and at 1, 1.5, and 2 years.

• Acute Biphenotypic Leukemia
• Acute Leukemia of Ambiguous Lineage
• Acute Lymphoblastic Leukemia
• Acute Myeloid Leukemia
• Acute Undifferentiated Leukemia
• Blastic Plasmacytoid Dendritic Cell Neoplasm
• Lymphoblastic Lymphoma
• Mixed Phenotype Acute Leukemia
• Acute Leukemia
• Hematopoietic and Lymphoid Cell Neoplasm

• Radiation: Total-Body Irradiation
  Undergo TBI
  Other Names:

  • Total Body Irradiation
  • Whole-Body Irradiation
  • TBI
  • Whole Body Irradiation
  • SCT_TBI
  • Total-Body Irradiation Prior to Stem Cell Transplant
• Drug: Thiotepa
  Given IV
  Other Names:

  • Oncotiotepa
  • STEPA
  • Tepadina
  • TESPA
  • Tespamin
  • Tespamine
  • Thio-Tepa
  • Thiofosfamide
  • Thiofozil
  • Thiophosphamide
  • Thiophosphoramide
  • Thiotef
  • Triethylene
  • Triethylenethiophosphoramide
• Drug: Fludarabine
  Given IV
  Other Name: Fluradosa
• Drug: Tacrolimus
  Given IV
  Other Names:

  • Prograf
  • Protopic
• Biological: Allogeneic CD34+-enriched and CD45RA-depleted PBSCs
  Given IV
  Other Names:

  • Allogeneic TN-depleted CD34-preserved PBSCs
  • Allogeneic TND- CD34+ PBSCs
  • Donor-derived TN Cell Depleted CD34-enriched PBSCs
  • Naive T-cell Depleted CD34+ Allogeneic Peripheral Blood Stem Cells
• Drug: Methotrexate
  Given IV
  Other Names:

  • Abitrexate
  • Alpha-Methopterin
  • Amethopterin
  • Brimexate
  • Emthexat
  • Emtexate
  • Farmitrexat
  • Methotrexate LPF
  • Methylaminopterin
  • Methotrexatum
  • Metotrexato
• Drug: Cyclophosphamide
  Given IV
  Other Names:

  • Ciclofosfamida
  • Ciclofosfamide
  • Cicloxal
  • Claphene
  • Cycloblastin
  • Cycloblastine
  • Cyclophospham
  • Cyclophosphamid monohydrate
  • Cytophosphan
• Biological: Peripheral Blood Stem Cell
  Given IV
  Other Names:

  • PBSC
  • Peripheral Blood Stem Cells
  • peripheral stem cell
  • Peripheral Stem Cells
• Drug: Cyclosporine
  Given IV
  Other Names:

  • Ciclosporin
  • CsA
  • Cyclosporin
  • Cyclosporin A
  • Cyclosporine Modified
  • Gengraf
  • Neoral
  • Sandimmune
  • SangCya
• Drug: Sirolimus
  Given IV
  Other Names:

  • RAPA
  • Rapamune
  • rapamycin
  • SILA 9268A
  • WY-090217

• Experimental: Arm A (TnD)
  Patients undergo TBI BID on days -10 to -7, and receive thiotepa IV over 3 hours on days -6 and -5, fludarabine IV over 30 minutes on days -6 to -2, tacrolimus (or cyclosporine or sirolimus if toxicities occur) IV continuously starting on day -1, CD34+ enriched CD45RA-depleted donor T-lymphocytes IV on day 0, and methotrexate IV on days 1, 3, 6, and 11. If there is no evidence of grade II-IV acute GVHD on or prior to day 50, tacrolimus (or cyclosporine or sirolimus) is tapered per month for capsules (or per week for liquid).
  Interventions:

  • Radiation: Total-Body Irradiation
  • Drug: Thiotepa
  • Drug: Fludarabine
  • Drug: Tacrolimus
  • Biological: Allogeneic CD34+-enriched and CD45RA-depleted PBSCs
  • Drug: Methotrexate
  • Drug: Cyclosporine
  • Drug: Sirolimus
• Experimental: Arm C (PTCy, tacrolimus)
  Patients undergo TBI BID on days -4 to -2 or -3 to -1, and receive PBSC IV on day 0. Patients also receive cyclophosphamide IV over 1 hour on days 3 and 4, and tacrolimus (or cyclosporine or sirolimus if toxicities occur) IV continuously starting on day 5. If there is no evidence of grade II-IV acute GVHD on or prior to day 50, tacrolimus (or cyclosporine or sirolimus) is tapered per month for capsules (or per week for liquid).
  Interventions:

  • Radiation: Total-Body Irradiation
  • Drug: Tacrolimus
  • Drug: Cyclophosphamide
  • Biological: Peripheral Blood Stem Cell
  • Drug: Cyclosporine
  • Drug: Sirolimus
• Experimental: Arm D (tacrolimus, methotrexate)
  Patients undergo TBI BID on days -6 to -4, and receive cyclophosphamide IV over 1 hour on days -3 to -2, tacrolimus (or cyclosporine or sirolimus if toxicities occur) IV continuously starting on day -1, PBSC IV on day 0, and methotrexate IV on days 1, 3, 6, and 11. If there is no evidence of grade II-IV acute GVHD on or prior to day 50, tacrolimus (or cyclosporine or sirolimus) is tapered per month for capsules (or per week for liquid).
  Interventions:

  • Radiation: Total-Body Irradiation
  • Drug: Tacrolimus
  • Drug: Methotrexate
  • Drug: Cyclophosphamide
  • Biological: Peripheral Blood Stem Cell
  • Drug: Cyclosporine
  • Drug: Sirolimus

Inclusion Criteria:

• Patients who are considered appropriate candidates for myeloablative, TBI-containing allogeneic hematopoietic stem cell transplantation and have one of the following diagnoses:

  • Acute lymphocytic leukemia (ALL) in first or subsequent morphological remission (< 5% marrow blasts by morphology).
  • Acute myeloid leukemia (AML) in first or subsequent morphological remission (< 5% marrow blasts by morphology).
  • Other acute leukemia or related neoplasm (including but not limited to 'mixed phenotype' 'biphenotypic', 'acute undifferentiated' or 'ambiguous lineage' acute leukemia, blastic plasmacytoid dendritic cell neoplasm or lymphoblastic lymphoma) in first or subsequent morphological remission (< 5% marrow blasts by morphology).
• Patient age 1 -50 years old (inclusive) at the time of informed consent
• Patient with an HLA-matched (HLA-A, B, C, DRB1, and DQB1 matched) related or unrelated donor capable of donating PBSC.
• Recipient informed consent/assent and/or legal guardian permission must be obtained.
• DONOR: HLA-matched related and unrelated donors (HLA-A, B, C, DRB1 and DQB1 matched based on high-resolution typing).
• DONOR: >= 18 years old.
• DONOR: Willing to donate PBSC.

• DONOR: Matched related donors:

  • Must give informed consent using the related donor informed consent form.
  • Must meet institutional donor eligibility criteria or be ineligible with statement that the donor is a first or second degree relative (exception 21 Code of Federal Regulations [CFR] 1271.65(b)(i)).

• DONOR: Matched unrelated donors:

  • Must consent according to the applicable National Marrow Donor Program (NMDP) donor regulatory requirements.
  • Must meet eligibility criteria as defined by the NMDP or be ineligible with statement of urgent medical need (exception 21 CFR 1271.65(b)(iii)).

Exclusion Criteria:

• Patients with central nervous system (CNS) involvement refractory to intrathecal chemotherapy and/or standard cranial-spinal radiation. A patient may have a history of CNS disease. However, any CNS disease must be cleared by the end of the pre-conditioning evaluation time frame. If CNS disease is identified on cerebrospinal fluid (CSF) evaluation within 30 days of the start of the preparative regimen a repeat CSF evaluation must be performed and show no evidence of disease in order for the patient to be eligible for the protocol.
• Patients on other experimental protocols for prevention of GVHD.

• Patient weight:

  • Patients with HLA-matched related donors will be excluded if they weigh >= 100 kg.
  • Patients with HLA-matched unrelated donors will be excluded if they weigh >= 100 kg and must be discussed with the Fred Hutch protocol principal investigator (PI) if they weigh >= 80 kg.
• Patients who are positive for human immunodeficiency virus (HIV)-1, HIV-2, human T-cell lymphotropic virus (HTLV)1 or HTLV2.
• Patients with uncontrolled infections for whom myeloablative HCT is considered contraindicated by the consulting infectious disease physician; i.e. patients with active infections require infectious disease consultation and documentation by the infectious disease team that myeloablative HCT is not considered to be contraindicated. Upper respiratory tract infection is not considered to represent an uncontrolled infection in this context.

• Patients with organ dysfunction, including:

  • Renal insufficiency (creatinine > 1.5 mg/dl) at the time of evaluation for the protocol. Patients with a known history of creatinine > 1.5 mg/dl or a current serum creatinine above the normal range for age must have a current creatinine clearance of > 60 ml/min/1.73 m^2 (measured by 24-hr urine specimen or nuclear glomerular filtration rate [GFR]).
  • Left ventricular ejection fraction < 45%.
  • Carbon monoxide diffusing capability (DLCO) corrected < 60%. Patients who are unable to perform pulmonary function tests (for example, due to young age and/or developmental status) will be excluded if the oxygen (O2) saturation is < 92% on room air.
  • Liver function abnormality. Patients who have liver function test (LFT)s (specifically, total bilirubin, aspartate aminotransferase [AST] or alanine aminotransferase [ALT]) >= twice the upper limit of normal should be evaluated by a gastrointestinal (GI) physician unless there is a clear precipitating factor (such as an azole, MTX, trimethoprim-sulfamethoxazole, or another drug). If the GI physician considers that HCT on the protocol is contraindicated, that patient will be excluded from the protocol. Patients with Gilbert's syndrome and no other known liver function abnormality or with reversible drug-related transaminitis do not necessarily require GI consultation and may be included on the protocol.
• Patients who have received previous myeloablative allogeneic or autologous transplantation.
• Patients with a life expectancy < 12 months from co-existing disease other than the leukemia.
• Patients who are pregnant or breast-feeding.
• 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.
• 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, MTX or thymoglobulin
• Patients who have received checkpoint inhibitors within three months of transplantation unless an exception is made by the PI
• DONOR: Donors who are HIV-1, HIV-2, HTLV-1, HTLV-2 seropositive or with active hepatitis B or hepatitis C virus infection. Test must be performed using Food and Drug Administration (FDA) licensed, cleared, and approved test kits (serological and/or nucleic acid amplification test [NAT] and/or other approved testing) in a Clinical Laboratory Improvement Act (CLIA)-certified laboratory.
• DONOR: Unrelated donors donating outside of the United States of America (USA).