A Prospective Clinical Cohort Study on Stratified Treatment of Rhabdomyosarcoma Based on Risk Factors.

This study tracks children and teenagers with rhabdomyosarcoma — a type of cancer that starts in muscle tissue — and divides them into risk groups to compare how well different treatment strategies work based on those risk levels. **You may be eligible if...** - You (or your child) are under 18 years old, any gender - The tumor has been confirmed by tissue biopsy or bone marrow testing - This is the first time receiving treatment for this cancer - Performance status is adequate (ECOG ≤ 2) - Expected survival is more than 8 months - A parent or guardian can provide written informed consent **You may NOT be eligible if...** - There is an underlying immune deficiency disease - There is a second, separate cancer diagnosis at the same time Talk to your doctor to see if this trial is right for you.