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Baseline quality of life (QoL) and chemotherapy related toxicities (CRT) in localized breast cancer (BC) patients (pts): The French multicentric prospective CANTO cohort study

Abstract Background In this study we aimed to examine the independent effect of baseline QoL and persistent CRT among pts with early BC. Methods We included data stage I-III BC pts treated with chemotherapy who were included in the CANTO prospective cohort study (NCT-01993498) from 03/2012 to 12/2014. The primary outcome was CRT defined as the presence at 3-6 months after the end of treatment, of any of the following toxicities (NCI-CTC-AE): infection, venous or arterial thrombosis, neurological G2-4, digestive G3-4 or pulmonary toxicities G3-4). Treatment deliver including chemotherapy dose reductions were also examined. The independent variable of this study was baseline Qol defined by the EORTC QLQ-C30 subscales of general global health status (GHS) ( Results Among 3079 BC pts included in this analysis, 33% received neoadjuvant and 77% adjuvant treatment. Median age at diagnosis was 53 years, median BMI= 25 kg/m2, 94% of patients had a PS = 0 and 83% stage I-II disease. Pts reported on average a good GHS = 68 (±19) and PF = 90 (±14). GHS and PF were higher in women with better performance status PS = 0 vs 1+, (68 vs 60 p  Conclusions Global and physical QoL before BC treatments are independently associated with CRT. QoL should be assessed before any treatment to identify patients at risk CRT. Clinical trial identification NCT01993498. Legal entity responsible for the study UNICANCER/Villejuif, France, 94805 Principal Investigator: Fabrice Andre Gustave Roussy – Villejuif. Funding Has not received any funding. Disclosure All authors have declared no conflicts of interest.