SIOP is pleased to present its 2024 Annual Report, showcasing a year of remarkable progress in paediatric oncology. In 2024, SIOP welcomed 3,700+ members and hosted a successful Annual Congress in Honolulu with 2,800+ attendees.

Join us in Amsterdam October 20-23, 2025, for the SIOP Annual Congress!

>Early Bird Registration: Jul 23, 2025

>Late Breaking Abstract: Aug 19, 2025

Please use promotional code SAVE5NOW to benefit from a 5% discount when purchasing a 2-year membership (calendar years 2025 and 2026). Applicable to all membership categories.

Are you an early-career researcher in paediatric psycho-oncology? Apply now for the Dr. Tori Willard Early Career Award, a $25,000 USD pilot grant supporting innovative research that advances care for children with cancer. Application Deadline: April 30, 2025