Annual Report
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.
SIOP 2025 Congress
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
Join SIOP Today
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.
Open Leadership Opportunities
SIOP is committed to fostering diverse, inclusive, and representative leadership that reflects the global childhood cancer community we serve. We actively encourage applications from members across all regions, disciplines, and career stages. Explore open opportunities.