SIOP is the only global multidisciplinary society entirely devoted to paediatric and adolescent cancer.
The society has over 2,600 members worldwide including doctors, nurses, other health-care professionals, scientists and researchers. Our members are dedicated to increasing knowledge about all aspects of childhood cancer.

SIOP’s vision is that no child should die of cancer: cure for more, care for all.


Improve the lives of children and adolescents with cancer through global collaboration, education, training, research and advocacy.