Study on Outcomes and Genetic Factors in Children and Teens with Germ Cell Tumors

What this Trial Is About

Researchers are establishing a group of children and adolescents who survived Germ Cell Tumors GCT to better understand the short-term and long-term side effects of treatment. They are also studying molecular differences in tumor types to find patterns that might predict outcomes like relapse or death. This observational study focuses on collecting and analyzing clinical and genetic data to improve risk assessment for pediatric GCT survivors. Participants are survivors previously enrolled in related studies who allow access to their medical records, including hearing test results. The study involves collecting tumor and normal tissue samples to analyze DNA changes and methylation patterns. Participants will complete questionnaires about their health and quality of life since treatment, and blood samples will be collected during routine clinic or home visits. During the study, researchers will review medical records and audiograms to assess hearing loss and validate self-reported health outcomes. They will analyze genetic variations and methylation patterns in tumor samples over up to five years. Participants will answer questionnaires and provide blood samples, helping researchers measure treatment effects and molecular markers. The study aims to improve understanding of GCT survivors health and guide future care approaches.

Molecular Epidemiology of Pediatric Germ Cell Tumors