Studying the possible causal link between pollutants and pediatric cancers, as underlined in this article of Reporterre, is indeed one of the research axes of the PEDIAC consortium, of which Marie Castets‘ team is a member. Establishing adequate models to specify the role of pollutants in the occurrence of cancers in children and young people is a key issue to define the causes of these diseases, in parallel with epidemiological studies. PEDIAC researchers are mobilized on this issue.