Serum assessment of non-adherence to adjuvant endocrine therapy (ET) among premenopausal patients in the prospective multicenter CANTO cohort

Background: Previous studies demonstrated that younger patients (pts) with breast cancer (BC) are more likely to be non-adherent to adjuvant ET, leading to impaired prognosis. Methods: The CANTO cohort (NCT01993498) is a French multicenter prospective longitudinal study that will include 12000 pts with recently diagnosed stage I-III BC, to characterize long-term impact of BC treatment toxicities. CANTO COMPLETE, a pre-defined sub study, aims to...