Welcome to SIOP

SIOP, the International Society of Paediatric Oncology, is a dynamic and vibrant global organisation dedicated to increasing knowledge about all aspects of childhood cancer. Our aim is to improve and optimise treatments throughout the world. SIOP’s vision is that no child should die of cancer.

We encourage all healthcare professionals involved in work on cancer in children and young adults to join SIOP, attend our congresses and regional meetings, and use SIOP as a means of developing their networks.


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"Remembering the Life and Work of Robert J. Arceci, MD, PhD"

                                    Memorial Card



Landmark childhood cancer event held on margins of the 68th World Health Assembly 2015 

"Childhood cancer: the importance of universal access to treatment, care and support"

Side event at the 68th World Health Assembly
Monday 18 May 2015, 18:00 - 19:30 hrs, Palais des Nations, Room XXIV
Co-hosted by: the Russian Federation, Germany, Philippines and Ghana with statements from SIOP and CCI Read more

SIOP 2015 Congress

October 8 - 11, 2015
Cape Town, South Africa
FAQs - Abstract submission, Registration, Visa applications etc. - click here
Key Dates

 SIOP joins SOSIDO community - read more

SIOP Meeting Endorsement - Click here to download the form


NEW! SIOP Training Opportunities - Find out more

SIOP Sections


  • Congress
  • Webcast
  • Membership
  • Nurses Section
  • Congress

    SIOP 2014, Toronto, Canada, 22-25 October 2014.

  • Webcast

    View selected sessions of SIOP Congresses!

  • Membership

    Join SIOP and enjoy the many benefits which membership brings!

  • Support SIOP

    By supporting SIOP, you join the fight for a future where no child dies of cancer.

Join SIOP Now!

Become a part of the SIOP community today and connect with other paediatric oncology professionals.

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Register now

for the SIOP 2015 Annual Meeting in Cape Town - Early bird rate ends July 7

click here >>   

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