Ploquin A, et al. - The survival between pregnant patients and matched controls were compared in this multicentre case-control French study. Using the Kaplan–Meier method, five-year overall survival (OS), disease-free survival (DFS) and metastasis-free survival (MFS) rates were estimated. One hundred and eleven breast cancer diagnosed during pregnancy (BCP) patients and 253 controls were enrolled. As compared to those of matched non-pregnant controls, the survival outcomes of patients diagnosed with BCP were not significantly different, however, a proper management of women diagnosed with BCP was crucial.