Hematopoietic Stem Cells
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Must be >= 18 years of age and, in selected countries, adolescents aged 12 years and greater and weighing >=30 kg at time of randomization. 2. Must undergo deoxyribose nucleic acid (DNA)-based human leukocyte antigen (HLA) matching and be 8 of 8 or 7 of 8 HLA-matched (singe allele or antigen mismatch at HLA-A, -B, and -C, and HLA-DRB1 is allowable) unrelated hematopoietic stem cell transplantation (HSCT) from either peripheral blood or bone marrow stem cells for a hematologic malignancy or myeloproliferative disorder. 3. For whom a myeloablative conditioning or reduced intensity conditioning (RIC) is planned. 4. Allo-HSCT eligible (meeting institutional criteria)-participants planned medical care should include aGvHD prophylaxis with a combination of calcineurin inhibitor (CNI) (cyclosporine [CYS] or tacrolimus [TAC]) and methotrexate (MTX) or CNI and mycophenolate mofetil (MMF). With the exception of antithymocyte globulin (ATG) (antithymocyte globulin-Fresenius [ATG-F] or thymoglobulin), all other therapies, approved or investigational, for GvHD prophylaxis are excluded. 5. Eastern Cooperative Oncology Group (ECOG) performance status of =18 years at randomization or >=60 percent (%) using the Karnofsky performance status for adolescent subjects aged >=16 years at randomization or the Lansky performance status for adolescent participants aged 12 to < 16 years at randomization..
Exclusion criteria
Exclusion criteria: 1. Had prior allo- HSCT. 2. Planned umbilical cord blood transplant or planned to receive posttransplant cyclophosphamide, in vivo or ex vivo T cell-depleted hematopoietic stem cells (HSCs) with the exception of ATG (ATG-F or thymoglobulin). 3. Planned allo-HSCT for nonmalignant hematological disorders (example, aplastic anemia, sickle cell anemia, thalassemias, Fanconi anemia or immunodeficiency).
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| 1.efficacy: Intestinal aGvHD-Free Survival After Allo-HSCT by Day +180 Timeframe; From the date of first dose of study drug to first documented intestinal aGvHD or death, whichever occurs first up to Day +180 Intestinal aGvHD Free Survival is the time from the date of first study drug administration (Day-1) to intestinal aGvHD event/death, where an event is defined as death due to any cause or Stage 1-4 intestinal involvement per Acute Graft versus-Host Disease Clinical Stage criteria. Data was censored for participants who have not had the intestinal aGvHD event or died or have had the event after pre-specified timing, e.g., last contact or Day +180 after allo HSCT whichever occurs first. | — |
Secondary
| Measure | Time frame |
|---|---|
| 1.Efficacy: Intestinal aGvHD-Free and Relapse-Free Survival Timeframe; From the date of first dose of study drug to first documented intestinal aGvHD criteria, relapse or death, whichever occurs first up to Day +180 GvHD and Relapse Free Survival is the time from the date of first study drug administration (Day-1) to GvHD event/death/relapse, where an event is defined as death or aGvHD Grade 3-4 by modified Glucksberg criteria or chronic GvHD requiring system immunosuppression or relapse. Data was censored for participants who have not had the event or have had the event after pre-specified timing, e.g., last contact or Day +180 after allo HSCT whichever occurs first. 2.Efficacy: Grade C-D aGvHD-Free Survival Timeframe; From the date of first dose of study drug to first documented Grade C-D aGvHD or death, whichever occurs first up to Day +180 GvHD and Relapse Free Survival is the time from the date of first study drug administration (Day-1) to GvHD event/death/relapse, where an event is defined as death or aGvHD Grade 3-4 by modified Glucksberg criteria or chronic GvHD requiring system immunosuppression or relapse. Data was censored for participants who have not had the event or have had the event after pre-specified timing, e.g., last contact or Day +180 after allo HSCT whichever occurs first. 3.Efficacy: Nonrelapse Mortality (NRM) Timeframe; From the date of first dose of study drug to first documented intestinal aGvHD or death, whichever occurs first up to Day +180 Non-relapse mortality is the time from the date of first study drug administration (Day-1) to death without occurrence of a relapse. Data was censored for participants who have not had the event or have had the event after pre-specified timing, e.g., last contact or Day +180 after allo HSCT whichever occurs first. 4.Efficacy: Overall Survival (OS) Timeframe; From the date of first dose of study drug to first documented intestinal aGvHD or death, whichever occurs first up to Day +180 Overall Surviva | — |
Countries
Japan, Other (Refer to the section, "Other")