This phase II trial studies how well donor umbilical cord blood transplant with ex-vivo expanded cord blood progenitor cells (dilanubicel) works in treating patients with blood cancer. Before the transplant, patients will receive chemotherapy (fludarabine, cyclophosphamide and in some cases thiotepa) and radiation therapy. Giving chemotherapy and total-body irradiation before a donor umbilical cord blood 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.
OUTLINE: Patients receive either regimen A or regimen B. REGIMEN A: Patients (10 through 45 years old) receive fludarabine intravenously (IV) over 30 minutes on days -8 to -6 and cyclophosphamide IV on days -7 and -6. Patients undergo total body irradiation (TBI) twice daily (BID) on days -4 to -1. Patients receive unmanipulated cord blood unit IV followed by dilanubicel IV within the next 24 hours on day 0. REGIMEN B: Patients (10 through 65 years old) receive fludarabine IV over 30-60 minutes on days -6 to -3 and IV over 30 minutes on day -2, cyclophosphamide IV on day -6, and thiotepa IV over 2-4 hours on days -5 and -4. Patients undergo TBI once daily (QD) on days -2 and -1. Patients receive unmanipulated cord blood unit IV followed by dilanubicel IV within the next 24 hours on day 0. All patients undergo bone marrow aspirate and biopsy as clinically indicated during screening and on study. Patients undergo multigated acquisition scan (MUGA) or echocardiography (ECHO), and computed tomography (CT) during screening. Patients also undergo blood sample collection on study. After completion of study treatment, patients are followed up at 180 days, 1 year, and 2 years.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
31
Given IV
Given IV
Given IV
Given IV
Undergo TBI
Given IV
Correlative studies
Undergo blood sample collection
Undergo bone marrow aspirate and biopsy
Undergo bone marrow aspirate and biopsy
Undergo MUGA
Undergo ECHO
Undergo CT
Fred Hutch/University of Washington Cancer Consortium
Seattle, Washington, United States
Number of Participants With Graft Failure
Primary graft failure/rejection as defined by no neutrophil recovery (regardless of donor chimerism) or autologous recovery (neutrophil recovery but \< 10% donor chimerism in blood and bone marrow \[BM\]).
Time frame: Up to day 45 post-transplant
Number of Participants Who Experienced Grade ≥3 Adverse Events Related to Study Product
Adverse events (AEs) were graded using the CTCAE v5.0. This outcome measured the number of participants who experienced at least one grade ≥ 3 adverse event considered related to the study product during the period of start of infusion of the study product (Day 0) until 100 days following transplant. An AE is considered related to the study product based on investigator assessment if it was assessed as definitely, probably, or possibly related; unrelated if it is assessed as unlikely related or unrelated. AE severity grade, seriousness, and relatedness were evaluated independently; therefore, grade ≥3 events were not necessarily serious adverse events (SAEs). Reporting of grade ≥3 AEs and all-grade SAEs is provided in the Adverse Events module. Dose-limiting toxicities (DLTs) were predefined.
Time frame: From study product infusion start through day 100 post-transplant
Time to Neutrophil Engraftment
The day of neutrophil recovery will be the 1st day of 2 consecutive days of absolute neutrophil count at or above 500 after the 1st post-cord blood transplant nadir.
Time frame: Up to day 45 post-transplant
Time to Platelet Engraftment
Measured by the number of participants with a platelet count \> 20,000/ul without subsequent transfusions for 7 days. Participants who did not reach platelet engraftment by day 100 post-transplant were censored at day 100.
Time frame: Up to day 100 post-transplant
Number of Participants With Acute Graft Versus Host Disease (aGVHD), by Grade
The presence of aGVHD was assessed using the Acute GVHD Grading Scale and represented as overall grade I-IV, with higher grade indicating worse outcomes. Grade I aGVHD is defined as skin stage 1-2 and stage 0 for both GI and liver. Grade II is stage 3 skin, stage 1 GI, or stage 1 liver. Grade III is stage 4 skin or stage 2-4 GI or stage 2-4 liver, without GVHD as a major contributing cause of death. Grade IV is stage 4 skin or stage 2-4 GI or stage 2-4 liver, with GVHD as a major contributing cause of death.
Time frame: At day 100 post-transplant
Number of Participants With Chronic Graft Versus Host Disease (cGVHD), by Severity
The presence of cGVHD was assessed using the Chronic GVHD Grading Scale, with higher severity indicating worse outcomes. Incidence of moderate or severe cGVHD were considered clinically significant. Mild cGVHD is defined as limited organ involvement with minimal functional impairment, typically affecting 1-2 organs/sites with no major impact on daily activities. Moderate cGVHD is indicated by more extensive organ involvement and/or clinically significant functional impairment, but without major disability. Severe cGVHD is defined as major organ involvement with substantial functional impairment or disability, often requiring intensive systemic therapy. Abnormalities that could indicate cGVHD are reviewed for the following organ systems: skin, nails, hair, mouth, eyes, vagina/vulva (for female patients), liver, lung, GI, fasciitis, serositis, muscle, skeletal.
Time frame: 1 year post-transplant
Number of Participants With Chronic Graft Versus Host Disease (cGVHD), by Severity
The presence of cGVHD was assessed using the Chronic GVHD Grading Scale, with higher severity indicating worse outcomes. Incidence of moderate or severe cGVHD were considered clinically significant. Mild cGVHD is defined as limited organ involvement with minimal functional impairment, typically affecting 1-2 organs/sites with no major impact on daily activities. Moderate cGVHD is indicated by more extensive organ involvement and/or clinically significant functional impairment, but without major disability. Severe cGVHD is defined as major organ involvement with substantial functional impairment or disability, often requiring intensive systemic therapy. Abnormalities that could indicate cGVHD are reviewed for the following organ systems: skin, nails, hair, mouth, eyes, vagina/vulva (for female patients), liver, lung, GI, fasciitis, serositis, muscle, skeletal.
Time frame: Up to 2 years post-transplant
Number of Participants Who Experienced Non-relapse Mortality
Non-relapse mortality (NRM) is defined as death without a prior relapse.
Time frame: At day 100 post-transplant
Number of Participants Who Experienced Non-relapse Mortality
Non-relapse mortality (NRM) is defined as death without a prior relapse.
Time frame: At day 180 post-transplant
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