The 58th Congress of the International Society of Paediatric Oncology (SIOP 2026) is scheduled to take place from September 15–18, 2026, in San Antonio, Texas, USA.

As the only global multidisciplinary society entirely devoted to pediatric and adolescent cancer, this premier event will bring together world-renowned experts for four days of cutting-edge science, engaging debates, and professional networking. The congress is held in conjunction with partners such as IPSO, PROS, and CCI, focusing on advancing the careers of pediatric oncology professionals and contributing to the global mission of ensuring no child dies of cancer.

Key administrative deadlines include an abstract submission cutoff of March 17, 2026, providing researchers with an international platform to share work that directly impacts childhood cancer care.