EJC Supplements is an open access companion journal to the European Journal of Cancer. As an open access journal, all published articles are subject to an Article Publication Fee. Immediately upon publication, all articles in EJC Supplements are made openly available through the journal's websites.

EJC Supplements will consider for publication the proceedings of scientific symposia, commissioned thematic issues, and collections of invited articles on preclinical and basic cancer research, translational oncology, clinical oncology and cancer epidemiology and prevention.

Authors considering the publication of a supplement in EJC Supplements are requested to contact the Editorial Office of the EJC to discuss their proposal with the Editor-in-Chief.

EJC Supplements is an official journal of the European Organisation for Research and Treatment of Cancer (EORTC), the European CanCer Organisation (ECCO) and the European Society of Mastology (EUSOMA).