Predictors of surgery preference and quality of life in DCIS after breast MRI: A trial of the ECOG-ACRIN Cancer Research Group (E4112).

Abstract

6564 Background: Management of ductal carcinoma in situ (DCIS) remains variable, requiring an understanding of patient preferences and concerns to enhance the treatment decision-making process. Pre-operative MRI and surgeon recommendation can further inform surgery choice. Quality of life (QoL) is also an important consideration in treatment decision-making. The aims of this study were to assess patients’ treatment preferences before and after MRI and surgeon consultation, concordance between treatment preference and surgery received, and trends in health-related QoL (HRQL) among a prospective cohort of women newly diagnosed with DCIS. Methods: A prospective nonrandomized clinical trial by the ECOG-ACRIN Cancer Research Group (E4112) enrolled women diagnosed with unilateral DCIS from 75 institutions between March 2015 and April 2016. Participants underwent either wide local excision (WLE) or mastectomy. Surveys queried patient-reported outcomes (PRO) including treatment preference and concerns, and HRQL before and after surgery. Logistic regression models were used to associate surgery preference and actual surgery received with demographic, clinical and PRO data. Change from baseline in HRQL was assessed using linear regression. Results: At study entry, age (OR 0.39, per 5-year increment, 95%CI, 0.21-0.75; p = 0.005) and treatment goals related to the importance of keeping one’s breast (OR 0.51, 95%CI 0.34-0.76; p = 0.001) and removal of the breast for peace of mind (OR 1.46, 95%CI 1.09-1.95; p = 0.01) drove surgery preference for mastectomy vs. WLE. After receipt of MRI and surgeon consultation, surgery preference was primarily mediated by MRI upstaging (OR 11.18, 95%CI 3.19-39.16; p < 0.001). Only 4% of women received a type of surgery that did not match their final treatment preference. The strongest predictors of actual surgery received were MRI upstaging (OR 15.80, 95%CI 4.85-51.46) and surgeon recommendation of mastectomy (OR 4.60, 95%CI 1.52-13.94). Receipt of a single surgery was associated with significantly improved mental health from baseline to one year after definitive surgery (p = 0.02 for mastectomy; p = 0.003 for single WLE). Self-reported Black race was an independent predictor of worsened mental (p = 0.001) and physical (p = 0.04) health at one year after definitive surgery, despite no significant racial differences in baseline HRQL. Conclusions: Our findings highlight the importance of communication between providers and patients regarding treatment preferences and goals, the clinical significance of MRI findings, and the benefits/risks of available treatment options. Future research to identify modifiable factors associated with declining mental and physical health is needed to inform targeted interventions to mitigate racial disparities and enhance HRQL in patients with DCIS.