The vast network of clinical research coordinated by EORTC (European Organ­isation for Research and Treatment of Cancer) is one of the spearheads of Eu­ropean cancerology. ###>Le vaste réseau de recherche clinique coordonné par l'EORTC (European Organi­sationfor Research and Treatment of Cancer) constitue l'un des fers de lance de la cancérologie européenne.