Over 3,500 professionals from around the world are gathered in the RAI to share the latest breakthroughs in childhood cancer. Inspiring sessions, international collaboration, and innovative research set the stage for a week full of new insights and connections. Discover what’s happening at SIOP 2025!
Today at SIOP
Thursday, October 23
The final day of SIOP 2025 is all about progress on every front: from patient-reported outcomes and groundbreaking translational research to innovative diagnostics and the power of supportive care. Inspiring sessions and meetings with international colleagues highlight how collaboration and innovation are driving better care and new hope for children with cancer.
Read about our highlights of Day 4 of the conference.
Prof. Dr. Rob Pieters and Prof. Dr. Marry van den Heuvel-Eibrink are officially appointed during the closing ceremony of SIOP 2025—Pieters as SIOP President and Van den Heuvel-Eibrink as Chair of the Scientific Committee. The closing ceremony will also include the handover of the ‘organizational baton’ to a U.S. delegation from San Antonio, the host city for SIOP 2026.
Wednesday, October 22
Day three of SIOP is all about award-winning research, promising clinical results, and smart innovations that make a real difference in the care of children with cancer. Inspiring lectures and fresh insights bring us one step closer to better treatments and improved quality of life.
Read about our highlights of Day 3 of the conference.
Miguel Vieira Martins, PhD student in the Pieters groep, presented a study of immunotherapy in babies with a specific form of leukemia, KM2TA-rearranged ALL. The findings are remarkable: it led to a doubling in disease-free survival. Watch our one-minute summary of his presentation below.
Tuesday 21 October
On day two of SIOP, we hear about innovative cell therapies, genetic breakthroughs, and there's international recognition. Inspiring sessions and new insights highlight the progress being made toward greater knowledge and improved treatments for children with cancer.
Read about our highlights of Day 2 of the conference.
In a Meet the Expert session, pediatric oncologist Bianca Goemans spoke about the challenges and opportunities in leukemia treatment for children with Down syndrome. She explains more in this video.
Monday 20 October
International experts, groundbreaking research, and the power of imagination set the tone for a week focused on collaboration, innovation, and improving outcomes for children with cancer.
Read about our highlights of Day 1 of the conference.