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

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

Programme Register

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.

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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

Now Open: Rising Star Grants for Young Cancer Researchers in Europe July 14, 2025

Now Open: Rising Star Grants for Young Cancer Researchers in Europe

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Building Knowledge and Bridging Gaps in Childhood Cancer Survivorship Research, Wednesday, August 27, 2025 July 14, 2025

Building Knowledge and Bridging Gaps in Childhood Cancer Survivorship Research, Wednesday, August 27, 2025

Over the past few decades, research in childhood cancer survivorship has greatly contributed to our understanding long-term effects of cancer and its treatment on survivors, risk factors and helped institute effective surveillance protocols and modify high-risk exposures. Recent research has focused on mitigating the late effects of childhood cancer treatment and improving the health and […]
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