This clinical trial is focused on studying treatments for Acute Lymphoblastic Leukemia (ALL) in children and adolescents. The study aims to explore different conditioning treatments used before a stem cell transplant. Conditioning treatments help prepare the body to receive new stem cells. The trial compares a treatment that includes Total Body Irradiation (TBI) and Etoposide with other treatments that do not use TBI. The alternative treatments involve combinations of medications such as Fludarabine Phosphate, Thiotepa, Busulfan, and Treosulfan. The study also includes the use of Blincyto (blinatumomab), a medication used in certain types of leukemia, and other medications like Cyclophosphamide, Rabbit Anti-Human Thymocyte Immunoglobulin, and Anti-Human T-Lymphocyte Immunoglobulin from Rabbits.
The purpose of the study is to determine if the non-TBI treatments are as effective as the TBI treatment in terms of survival rates. The trial also looks at the impact of these treatments on the occurrence of specific side effects and overall survival. The study is divided into different groups based on the type of donor used for the stem cell transplant. One group involves donors who are a perfect match, while another group involves donors who are not a perfect match. The trial will follow participants over time to monitor their health and any side effects they may experience.
Participants in the study will receive their assigned treatment and be monitored for their response to the treatment and any side effects. The study will help researchers understand which treatment options are best for children and adolescents with Acute Lymphoblastic Leukemia undergoing stem cell transplantation. The trial is expected to continue until 2030, allowing for long-term observation of the participants’ health outcomes.



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