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.

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SIOP 2025 Congress

Thank you for being with us in Amsterdam from October 20-23, 2025, for the SIOP Annual Congress!

> Claim your CME credits here

> Access the recordings here

> Access the post-congress report here

CME Recordings Report

Join SIOP Today

Please use promotional code SAVE5NOW to benefit from a 5% discount when purchasing a 2-year membership (calendar years 2026 and 2027). Applicable to all membership categories.

Join or renew for 2026 & 2027

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.

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Latest News

Using Artificial Intelligence Intelligently for Clinical Practice Guideline Development, Webinar Recording

Speaker: Dr. Wojtek Wiercioch, Director, McMaster GRADE Centre in the Department of Health Research Methods, Evidence, and Impact at McMaster University, Hamilton, Canada. Watch Recording

SIOP Europe 7th Annual Meeting 2026

Join us for this next edition, featuring a unique interactive format to discuss the current priorities and needs in the field of childhood cancers and for the opportunity to share knowledge, collaborate and network. This unique meeting, now in a new and improved 4-day format, will allow us to come together once again to network, collaborate, share knowledge, meet old and new friends, […]