This study looks at biomarkers in tumor tissues from patients with newly diagnosed neuroblastoma or ganglioneuroblastoma. Biomarkers are special signs in your body that can show disease or other conditions. Neuroblastoma and ganglioneuroblastoma are types of cancer that usually affect young children. This study will help doctors learn more about these cancers by examining tumor samples.
The study will gather blood, tissue, and bone marrow samples. These samples will be tested using techniques like RT-PCR (a method to find specific genetic markers) and FISH (a way to look at specific genes).
**Key Points:**
- Participants must be newly diagnosed and have not received chemotherapy, except in emergencies.
- Samples must be collected before treatment starts, or within 96 hours if urgent treatment is needed.
- Participants and their guardians need to consent to the study.
After the study, patients will have regular follow-ups to monitor their health. This research will help doctors predict outcomes of these cancers better and improve future treatments.