The Swiss Childhood Cancer Registry has been a success story since its foundation in 1976. With the Cancer Registration Act coming into force in 2020, things will change.

The co-directors Claudia Kühni and Verena Pfeiffer report on the commitment, the wishes and concerns for the restructuring...

• Children treated for cancer were more often overweight at the end of treatment (13%) compared to when they started treatment (8%).

• Boys and patients suffering from leukaemia or lymphoma were more likely to gain weight during treatment.

• Leukaemia and lymphoma patients gained weight during...

•Former childhood cancer patients in Switzerland are not more likely to become overweight than persons who never had cancer.

•We found no evidence to suggest that corticosteroid treatment leads to overweight in the long-term