This study investigates the safety of an investigational medication given directly into tumors in children with advanced solid tumors outside the brain. These tumors must be ones that can be directly injected. The purpose is to understand how the body responds to this treatment and to ensure it is safe for children.
Participants will receive the investigational medication through injections directly into their tumors. This study will help researchers learn more about how the medication works in the body and if there are any side effects. The medication is given in a clinical setting where doctors can monitor the participants closely.
- Who can participate: Children with advanced solid tumors outside the brain and spinal cord that have returned after standard treatment or have no other standard treatment available can participate. They must have a life expectancy of more than 4 months and be able to receive injections directly into their growths.
- Study details: Participants will receive injections of the investigational medication directly into their growths. The study will monitor their response to the treatment and any side effects experienced.

