The SIOP membership year runs on a calendar-year basis, from January 1 to December 31.

Important: 

• Please use promotional code SAVE5NOW to benefit from 5% discount when purchasing 2-year memberships (calendar years 2026 and 2027).

• Please choose the appropriate membership category and proceed.

• If you have difficulties with the payment or if your credit card is rejected, please contact membership@siop-online.org for support; If you want to purchase 3 or more membership years, please email membership@siop-online.org. 

Physicians 

Health and science professionals at the MD/PHD level who have an interest in the clinical, laboratory, epidemiological or other research application to the field of childhood cancer

Upper HIC: € 235 for 1 Year

UMIC: € 80 for 1 Year

LIC/LMIC: € 20 for 1 Year

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Young SIOP

For members who are 40 years old or younger. Please be ready to upload proof of age.

HIC: € 60 for 1 Year until age 40
UMIC: € 20 or 1 Year until age 40
LIC/LMIC: € 10 or 1 Year until age 40

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Allied Health and Other Professionals

Rehabilitation professionals, psychologists, social workers, nutritionists, pharmacists, etc., including administrators (MPH, MBA) who work on behalf of children with cancer.
HIC: € 80 for 1 Year
UMIC: € 20 for 1 Year
LIC/LMIC: € 10 for 1 Year

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Nurse Members

Nurses and nurse educators who work and care for children with cancer
HIC: € 80 for 1 Year
UMIC: € 20 for 1 Year
LIC/LMIC: € 10 for 1 Year

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CCI Members, Survivors/Parents, Non-Profit Advocates and Organizations

For advocacy personnel and non-health professionals interested in childhood cancer. 
HIC: € 80 for 1 year
UMIC: € 20 for 1 year
LIC/LMIC: € 10 for 1 year

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Physician Members of Affiliated Groups (IPSO, PROS)

If you choose this category, you need to upload an IPSO or PROS membership certificate at the time of application
HIC: € 80 for 1 Year
UMIC: € 40 for 1 Year
LIC/LMIC: € 10 for 1 Year