An analysis of the situation of pregnancies that occur during oncology treatments has been one of the points that has aroused most interest among European health professionals. The potential harmful effects of anti-cancer agents are a reason for great concern. In some cases, the treatments are avoided, or the patient decides to interrupt the pregnancy. New studies however have cleared some doubts: foetuses exposed to chemotherapy in the uterus have little likelihood of suffering a negative impact on their mental or cardiac development, according to Frederic Amant of the Lovaine University Hospital (Belgium), who presented the data at ESMO 2014.