This clinical trial is focused on treating children and adolescents who have relapsed or refractory extracranial solid tumors. These are types of cancer that occur outside the brain and have either returned after treatment or have not responded to standard treatments. The study will use a treatment called AloCelyvir, which is a special type of cell therapy. AloCelyvir is made from allogenic bone marrow-derived mesenchymal stem cells that have been modified with a virus called ICOVIR-5. This treatment will be combined with standard cancer treatments like chemotherapy and radiotherapy.
The purpose of the study is to evaluate the safety of adding AloCelyvir to the existing treatment plan for these tumors. Participants in the study will receive the combination of AloCelyvir, chemotherapy, and radiotherapy. The study will monitor how well patients tolerate the treatment and any side effects they may experience. The trial will also look at how effective the treatment is in reducing the size of the tumors and improving the patients’ overall health.
Throughout the study, researchers will carefully observe the participants to ensure their safety and to gather information on how the treatment affects the tumors. The study aims to find the best dose of AloCelyvir that can be safely used with chemotherapy and radiotherapy. This research is important for developing new treatment options for young patients with these challenging types of cancer.



Spain