Analysis of weight trends over time in female survivors with triple negative breast cancer.

28Background: Triple-negative breast cancer (TNBC) is a subtype of breast cancer (BC) with unique clinical-pathological & prognostic characteristics. Studies have shown obesity to be risk factor for TNBC. Furthermore, patients (pts) with BC and overweight/obesity have a worse prognosis. Here we investigate body mass index (BMI) & weight trends among BC survivors. Methods: A retrospective review BC pts at Cancer Treatment Centers of America Atlanta from 2012-10/27/17. Definition of a survivor: pts who have completed definitive therapy with no evidence of disease. Survivor BMI & weight gain (kg) calculated from chart review. Weight gain in kg was recorded post chemotherapy, at 3, 6, 9, 12 month follow up. Inclusion: Pts with ER-PR-HER2- (TNBC), adults > 18 yo, pts who completed chemo (neoadjuvant or adjuvant) & surgery +/- radiation. Exclusion: Pts who died, had relapsed local disease or metastatic disease; missing BMI data; currently on chemotherapy; who did not receive chemotherapy; missing continuous BMI...