Trends in Locoregional Therapy in Older Women with Early-Stage Hormone Receptor-Positive Breast Cancer by Frailty and Life Expectancy.

BACKGROUND: In women ≥ 70 years of age with T1N0 hormone receptor-positive (HR+)/human epidermal growth factor receptor 2-negative (HER2-) breast cancer, breast surgery type and omission of axillary surgery or radiation therapy (RT) do not impact overall survival. Although frailty and life expectancy ideally factor into therapy decisions, their impact on therapy receipt is unclear. We sought to identify trends in and factors associated with locoregional therapy type by frailty and life expectancy. METHODS: Women ≥ 70 years of age with T1N0 HR+/HER2- breast cancer diagnosed in the Surveillance, Epidemiology, and End Results (SEER)-Medicare database between 2010 and 2015 were stratified by validated claims-based frailty and life expectancy measures. Therapy trends over time by regimen intensity ('high intensity': lumpectomy + axillary surgery + RT, or mastectomy + axillary surgery; 'moderate intensity': lumpectomy + RT, lumpectomy + axillary surgery, or mastectomy only; or 'low intensity': lumpectomy only) were analyzed. Factors associated with therapy type were identified using generalized linear mixed models. RESULTS: Of 16,188 women, 21.8% were frail, 22.2% had a life expectancy < 5 years, and only 12.3% fulfilled both criteria. In frail women with a life expectancy < 5 years, high-intensity regimens decreased significantly (48.8-31.2%; p < 0.001) over the study period, although in 2015, 30% still received a high-intensity regimen. In adjusted analyses, frailty and life expectancy < 5 years were not associated with breast surgery type but were associated with a lower likelihood of axillary surgery (frailty: odds ratio [OR] 0.86, 95% confidence interval [CI] 0.76-0.96; life expectancy < 5 years: OR 0.22, 95% CI 0.20-0.25). Life expectancy < 5 years was also associated with a lower likelihood of RT receipt in breast-conserving surgery patients (OR 0.30, 95% CI 0.27-0.34). CONCLUSIONS: Rates of high-intensity therapy are decreasing but overtreatment persists in this population. Continued efforts aimed at appropriate de-escalation of locoregional therapy are needed.

Potential Overtreatment of DCIS in Patients with Limited Life Expectancy.

INTRODUCTION: As the benefits of intensive locoregional therapy for ductal carcinoma in situ (DCIS) are realized over time in older adults, life expectancy may help to guide treatment decisions. We examined whether life expectancy was associated with extent of locoregional therapy in this population. PATIENTS AND METHODS: Women ≥ 70 years old with < 5 cm of DCIS diagnosed 2010-2015 were identified in the Surveillance, Epidemiology, and End Results (SEER)-Medicare dataset and categorized by a life expectancy ≤ 5 or > 5 years, defined by a validated claims-based measure. Differences in locoregional therapy (mastectomy + axillary surgery, mastectomy-only, lumpectomy + radiation therapy (RT) + axillary surgery, lumpectomy + RT, lumpectomy-only, and no treatment) by life expectancy were assessed using Pearson chi-squared tests. Generalized linear mixed models were used to identify factors associated with receipt of lumpectomy-only. RESULTS: Of 5346 women (median age of 75 years, range 70-97 years), 927 (17.3%) had a life expectancy ≤ 5 years. Of the 4041 patients who underwent lumpectomy, 710 (13.3%) underwent axillary surgery. More patients with life expectancy ≤ 5 years underwent lumpectomy-only (39.4% versus 27%), mastectomy-only (8.1% versus 5.3%), or no treatment (5.8% versus 3.2%; p < 0.001). On multivariable analysis, women with life expectancy ≤ 5 years had a significantly greater likelihood of undergoing lumpectomy-only [OR 1.90, 95% CI (1.63-2.22)]. CONCLUSIONS: Life expectancy is associated with lower-intensity locoregional therapy for older women with DCIS, yet a large proportion of patients with a life expectancy ≤ 5 years received RT and axillary surgery, highlighting potential overtreatment and opportunities to de-escalate locoregional therapy in older adults.

Acceptability of a companion patient guide to support expert consensus guidelines on surveillance mammography in older breast cancer survivors.

PURPOSE: To support shared decision-making, patient-facing resources are needed to complement recently published guidelines on approaches for surveillance mammography in breast cancer survivors aged ≥ 75 or with < 10-year life expectancy. We created a patient guide to facilitate discussions about surveillance mammography in older breast cancer survivors. METHODS: The "Are Mammograms Still Right for Me?" guide estimates future ipsilateral and contralateral breast (in-breast) cancer risks, general health, and the potential benefits/harms of mammography, with prompts for discussion. We conducted in-clinic acceptability testing of the guide by survivors and their clinicians at a National Cancer Institute-designated comprehensive cancer center, including two community practices. Patients and clinicians received the guide ahead of a clinic visit and surveyed patients (pre-/post-visit) and clinicians (post-visit). Acceptability was defined as ≥ 75% of patients and clinicians reporting that the guide (a) should be recommended to others, (b) is clear, (c) is helpful, and (d) contains a suitable amount of information. We also elicited feedback on usability and mammography intentions. RESULTS: We enrolled 45 patients and their 21 clinicians. Among those responding in post-visit surveys, 33/37 (89%) patients and 15/16 (94%) clinicians would recommend the guide to others; 33/37 (89%) patients and 15/16 (94%) clinicians felt everything/most things were clear. All other pre-specified acceptability criteria were met. Most patients reported strong intentions for mammography (100% pre-visit, 98% post-visit). CONCLUSION: Oncology clinicians and older breast cancer survivors found a guide to inform mammography decision-making acceptable and clear. A multisite clinical trial is needed to assess the guide's impact mammography utilization. TRIAL REGISTRATION: ClinicalTrials.gov-NCT03865654, posted March 7, 2019.

Race and Site of Care Impact Treatment Delays in Older Women with Non-Metastatic Breast Cancer.

BACKGROUND: Women ≥ 65 years of age are less likely to receive guideline-concordant breast cancer care. Given existing racial/ethnic disparities, older minority breast cancer patients may be especially prone to inequalities in care. How site of care impacts older breast cancer patients is not well defined. We sought to evaluate the association between race/ethnicity and breast cancer treatment delays in older women treated at minority-serving hospitals (MSHs) versus non-MSHs. METHODS: Women ≥ 65 years of age treated for non-metastatic breast cancer were identified in the National Cancer Database (2010-2017). Treatment delay was defined as > 90 days from diagnosis to initial treatment. MSHs were defined as the top decile of hospitals serving predominantly Black or Hispanic patients. Multivariable logistic regression models adjusted for patient, tumor, and hospital characteristics were used to determine the odds of treatment delay for women at MSHs versus non-MSHs across racial/ethnic groups. RESULTS: Overall, 557,816 women were identified among 41 MSHs and 1146 non-MSHs. Average time to treatment was 33.71 days (standard deviation 26.92 days). Older women at MSHs were more likely to experience treatment delays than those at non-MSHs (odds ratio 1.28, 95% confidence interval 1.21-1.36). Regardless of where they received care, minorities were more likely to experience treatment delays than non-Hispanic White women. CONCLUSIONS: Although 97% of older women treated at Commission on Cancer-accredited hospitals received timely breast cancer care, minorities and those treated at MSHs were more likely to experience treatment delays. Interventions addressing barriers to timely breast cancer care at MSHs may be an effective approach to reducing racial/ethnic disparities.

Variation in Deescalated Axillary Surgical Practices in Older Women with Early-Stage Breast Cancer.

BACKGROUND: Randomized controlled trials show that certain axillary surgical practices can be safely deescalated in older adults with early-stage breast cancer. Hospital volume is often equated with surgical quality, but it is unclear whether this includes performance of low-value surgeries. We sought to describe how utilization of two low-value axillary surgeries has varied by time and hospital volume. METHODS: Women aged ≥ 70 years diagnosed with breast cancer from 2013 to 2016 were identified in the National Cancer Database. The outcomes of interest were sentinel lymph node biopsy (SLNB) in cT1N0 hormone receptor-positive cancer patients and axillary lymph node dissection (ALND) in cT1-2N0 patients undergoing breast-conserving surgery with ≤ 2 pathologically positive nodes. Time trends in procedure use and multivariable regression with restricted cubic splines were performed, adjusting for patient, disease, and hospital factors. RESULTS: Overall, 83.4% of 44,779 women eligible for omission of SLNB underwent SLNB and 20.0% of 7216 patients eligible for omission of ALND underwent ALND. SLNB rates did not change significantly over time and remained significantly different by age group (70-74 years: 93.5%; 75-79 years: 89.7%, 80-84 years: 76.7%, ≥ 85 years: 48.9%; p < 0.05). ALND rates decreased over the study period across all age groups included (22.5 to 16.9%, p < 0.001). In restricted cubic splines models, lower hospital volume was associated with higher likelihood of undergoing SLNB and ALND. CONCLUSIONS: ALND omission has been more widely adopted than SLNB omission in older adults, but lower hospital volume is associated with higher likelihood of both procedures. Practice-specific deimplementation strategies are needed, especially for lower-volume hospitals.

Patient preferences for locoregional therapy in early-stage breast cancer.

PURPOSE: With an increasing emphasis on patient-centered care, clinicians in subspecialties such as breast surgery and radiation oncology that offer multiple therapeutic options with equivalent outcomes are under increasing pressure to aid patients with the decision-making process. The aim of this review is to summarize existing studies that either evaluated factors in patient's decision-making regarding locoregional therapy in early-stage breast cancer or evaluated benefit thresholds required to change therapy decisions. METHODS: A PubMed search to identify prospective or retrospective studies written in English reporting factors in patient decision-making regarding locoregional therapy in early-stage breast cancer was conducted. No restriction was placed on publication date. Studies that focused on breast reconstruction decisions or on patient preferences for decision-making involvement were excluded. RESULTS: A total of 39 studies were identified; 19 examining patient preferences for breast-conserving surgery versus mastectomy, 7 on preferences for contralateral prophylactic mastectomy, 2 on non-surgical options, 2 on the extent of axillary surgery, and 9 on radiation therapy decisions. Themes such as fear of recurrence, desire to avoid additional invasive therapy, and the importance of physician preference were common, but many studies also highlighted factors important to specific subpopulations of women. CONCLUSIONS: Patient preference is difficult to define and measure, and heterogeneity across studies renders direct comparison difficult. Future work is needed to define women's risk-thresholds for certain treatments, delve into the psychological factors that direct their decisions, and understand how patients' valuations of risk interact with society's.

Do Body Mass Index and Breast Density Impact Cancer Risk Among Women with Lobular Carcinoma In Situ?

PURPOSE: Both body mass index (BMI) and breast density impact breast cancer risk in the general population. Whether obesity and density represent additive risk factors in women with lobular carcinoma in situ (LCIS) is unknown. METHODS: Patients diagnosed with LCIS from 1988 to 2017 were identified from a prospectively maintained database. BMI was categorized by World Health Organization classification. Density was captured as the mammographic Breast Imaging Reporting and Data System (BIRADS) value. Other covariates included age at LCIS diagnosis, menopausal status, family history, chemoprevention, and prophylactic mastectomy. Cancer-free probability was estimated using the Kaplan-Meier method, and Cox regression models were used for univariable and multivariable analyses. RESULTS: A total of 1222 women with LCIS were identified. At a median follow-up of 7 years, 179 women developed breast cancer (121 invasive, 58 ductal carcinoma in situ); 5- and 10-year cumulative incidences of breast cancer were 10% and 17%, respectively. In multivariable analysis, increased breast density (BIRADS C/D vs. A/B) was significantly associated with increased hazard of breast cancer (hazard ratio [HR] 2.42, 95% confidence interval [CI] 1.52-3.88), whereas BMI was not. On multivariable analysis, chemoprevention use was associated with a significantly decreased hazard of breast cancer (HR 0.49, 95% CI 0.29-0.84). Exploratory analyses did not demonstrate significant interaction between BMI and menopausal status, BMI and breast density, BMI and chemoprevention use, or breast density and chemoprevention. CONCLUSIONS: Breast cancer risk among women with LCIS is impacted by breast density. These results aid in personalizing risk assessment among women with LCIS and highlight the importance of chemoprevention counseling for risk reduction.

Assessment of hospital-level adjusted breast cancer sentinel lymph node positivity rates.

BACKGROUND/OBJECTIVES: Proficiency of performing sentinel lymph node biopsy (SLNB) for breast cancer varies among hospitals and may be reflected in the hospital's SLNB positivity rate. Our objectives were to examine whether hospital characteristics are associated with variation in SLNB positivity rates and whether hospitals with lower-than-expected SLNB positivity rates have worse patient survival. METHODS: Using the National Cancer Data Base, stage I to III breast cancer patients were identified (2004-2012). Hospital-level SLNB positivity rates were adjusted for tumor and patient factors. Hospitals were divided into terciles of SLNB positivity rates (lower-, higher-, as-expected). Hospital characteristics and survival were examined across terciles. RESULTS: Of 438 610 SLNB patients (from 1357 hospitals), 78 104 had one or more positive SLN (21.3%). Hospitals in the low and high terciles were more likely to be low volume (low: RRR, 4.40; 95% CI, 2.89-6.57; P < 0.001; and high: RRR, 1.79; 95% CI, 1.21-2.64; P < 0.001) compared to hospitals with as-expected (middle tercile) SLNB positivity rates. Stage I patients at low- and high-tercile hospitals had statistically worse survival. CONCLUSIONS: There is a wide variation in hospital SLNB positivity rates. Hospitals with lower- or higher-than-expected SLNB positivity rates were associated with survival differences. Hospital SLNB positivity rates may be a novel 'process measure' to report to hospitals for internal quality assessment.

Evaluation of a novel mentor program to improve surgical care for US hospitals.

OBJECTIVE: To evaluate a novel mentor program for 27 US surgeons, charged with improving quality at their respective hospitals, having been paired 1:1 with 27 surgeon mentors through a state-wide quality improvement (QI) initiative. DESIGN: Mixed-methods utilizing quantitative surveys and in-depth semi-structured interviews. SETTING: The Illinois Surgical Quality Improvement Collaborative (ISQIC) utilized a novel Mentor Program to guide surgeons new to QI. PARTICIPANTS: All mentor-mentee pairs received the survey (n = 27). Purposive sampling identified a subset of mentors (n = 8) and mentees (n = 4) for in-depth semi-structured interviews. INTERVENTION: Surgeons with expertise in QI mentored surgeons new to QI. MAIN OUTCOME MEASURES: (i) Quantitative: self-reported satisfaction with the mentor program; (ii) Qualitative: key themes suggesting actions and strategies to facilitate mentorship in QI. RESULTS: Mentees expressed satisfaction with the mentor program (n = 24, 88.9%) and agreed that mentorship is vital to ISQIC (n = 24, 88.9%). Analysis of interview data revealed four key themes: (i) nuances of data management, (ii) culture of quality and safety, (iii) mentor-mentee relationship and (iv) logistics. Strategies from these key themes include: utilize raw data for in-depth QI understanding, facilitate presentations to build QI support, identify opportunities for in-person meetings and establish scheduled conference calls. The mentor's role required sharing experiences and acting as a resource. The mentee's role required actively bringing questions and identifying barriers. CONCLUSIONS: Mentorship plays a vital role in advancing surgeon knowledge and engagement with QI in ISQIC. Key themes in mentorship reflect strategies to best facilitate mentorship, which may serve as a guide to other collaboratives.

Relationship Between State Malpractice Environment and Quality of Health Care in the United States.

BACKGROUND: One major intent of the medical malpractice system in the United States is to deter negligent care and to create incentives for delivering high-quality health care. A study was conducted to assess whether state-level measures of malpractice risk were associated with hospital quality and patient safety. METHODS: In an observational study of short-term, acute-care general hospitals in the United States that publicly reported in the Centers for Medicaid & Medicare Services Hospital Compare in 2011, hierarchical regression models were used to estimate associations between state-specific malpractice environment measures (rates of paid claims, average Medicare Malpractice Geographic Practice Cost Index [MGPCI], absence of tort reform laws, and a composite measure) and measures of hospital quality (processes of care, imaging utilization, 30-day mortality and readmission, Agency for Healthcare Research and Quality Patient Safety Indicators, and patient experience from the Hospital Consumer Assessment of Healthcare Providers and Systems [HCAHPS]). RESULTS: No consistent association between malpractice environment and hospital process-of-care measures was found. Hospitals in areas with a higher MGPCI were associated with lower adjusted odds of magnetic resonance imaging overutilization for lower back pain but greater adjusted odds of overutilization of cardiac stress testing and brain/sinus computed tomography (CT) scans. The MGPCI was negatively associated with 30-day mortality measures but positively associated with 30-day readmission measures. Measures of malpractice risk were also negatively associated with HCAHPS measures of patient experience. CONCLUSIONS: Overall, little evidence was found that greater malpractice risk improves adherence to recommended clinical standards of care, but some evidence was found that malpractice risk may encourage defensive medicine.

Association Between State Medical Malpractice Environment and Surgical Quality and Cost in the United States.

CONTEXT: The US medical malpractice system is designed to deter negligence and encourage quality of care through threat of liability. OBJECTIVE: To examine whether state-level malpractice environment is associated with outcomes and costs of colorectal surgery. DESIGN, SETTING, AND PATIENTS: Observational study of 116,977 Medicare fee-for-service beneficiaries who underwent colorectal surgery using administrative claims data. State-level malpractice risk was measured using mean general surgery malpractice insurance premiums; paid claims per surgeon; state tort reforms; and a composite measure. Associations between malpractice environment and postoperative outcomes and price-standardized Medicare payments were estimated using hierarchical logistic regression and generalized linear models. MAIN OUTCOME MEASURES: thirty-day postoperative mortality; complications (pneumonia, myocardial infarction, venous thromboembolism, acute renal failure, surgical site infection, postoperative sepsis, any complication); readmission; total price-standardized Medicare payments for index hospitalization and 30-day postdischarge episode-of-care. RESULTS: Few associations between measures of state malpractice risk environment and outcomes were identified. However, analyses using the composite measure showed that patients treated in states with greatest malpractice risk were more likely than those in lowest risk states to experience any complication (OR: 1.31; 95% CI: 1.22-1.41), pneumonia (OR: 1.36; 95%: CI, 1.16-1.60), myocardial infarction (OR: 1.44; 95% CI: 1.22-1.70), venous thromboembolism (OR:2.11; 95% CI: 1.70-2.61), acute renal failure (OR: 1.34; 95% CI; 1.22-1.47), and sepsis (OR: 1.38; 95% CI: 1.24-1.53; all P < 0.001). There were no consistent associations between malpractice environment and Medicare payments. CONCLUSIONS: There were no consistent associations between state-level malpractice risk and higher quality of care or Medicare payments for colorectal surgery.

National Evaluation of the New Commission on Cancer Quality Measure for Postmastectomy Radiation Treatment for Breast Cancer.

BACKGROUND: Current guidelines recommend postmastectomy radiotherapy (PMRT) for patients with ≥4 positive lymph nodes and suggest strong consideration of PMRT in those with 1-3 positive nodes. These recommendations were incorporated into a Commission on Cancer quality measure in 2014. However, national adherence with these recommendations is unknown. Our objectives were to describe PMRT use in the United States in patients with stage I to III invasive breast cancer and to examine possible factors associated with the omission of PMRT. METHODS: From the National Cancer Data Base, 753,536 mastectomies at 1123 hospitals were identified from 1998 to 2011. PMRT use over time was examined using random effects logistic regression analyses, adjusting for patient, tumor, and hospital characteristics. Analyses were stratified by nodal status (≥4 nodes positive, 1-3 nodes positive, node negative). RESULTS: The proportion of patients receiving PMRT increased from 1998 to 2011 (>4 positive nodes: 56.2 to 66.6 %; 1-3 positive nodes: 28.0 to 39.1 %; node-negative: 8.3 to 10.0 %, p < 0.001 for all). In adjusted analyses, patients with ≥4 positive nodes were more likely to have PMRT omitted if they had smaller tumors. Patients with 1-3 positive nodes were more likely to have PMRT omitted if they had lower grade or smaller tumors. Irrespective of patients' nodal status, PMRT utilization rates decreased as age increased. CONCLUSIONS: Though PMRT rates increased over time in patients with ≥4 and 1-3 positive nodes, PMRT in patients with ≥4 positive nodes remains underutilized. Feedback to hospitals using the new Commission on Cancer PMRT measure may help to improve adherence rates.

National Evaluation of Hospital Performance on the New Commission on Cancer Melanoma Quality Measures.

INTRODUCTION: To increase adherence to cancer management guidelines, the Commission on Cancer (CoC) developed and approved five melanoma quality measures in 2015. Our objectives were to evaluate formally the national performance of these melanoma measures and to examine patient, tumor, and hospital characteristics associated with adherence. METHODS: From the National Cancer Data Base (2012), patients with invasive, nonmetastatic melanoma were identified. Inclusion and exclusion criteria were based on the CoC definition for each measure. Patient-level and hospital-level adherence rates were calculated for the five measures. A hospital was deemed "compliant" if it met the CoC standard, which requires 80 % of patients to receive the measure-specific recommended care. Patient, tumor, and hospital characteristics potentially associated with higher likelihood of adherence at the patient-level were estimated using hierarchical random-effects logistic regression models. RESULTS: A total of 31,598 patients from 1343 hospitals were examined. Patient-level adherence rates varied from 31.6 % (Measure 5: ≥10 axillary lymph nodes removed/examined) to 72.6 % (Measure 1: sentinel lymph node biopsy (SLNB) appropriateness measure). Hospital-level adherence rates, ranged from 19.3 % of hospitals (N = 538 hospitals for Measure 5) to 44.8 % of hospitals (N = 1090 hospitals for Measure 3: completion lymph node dissection after positive SLNB). No hospital-level factors (e.g., teaching status) were consistently associated with better adherence. CONCLUSIONS: National adherence rates to the five new CoC melanoma quality metrics are low, and most hospitals would not meet the CoC requirement of 80 % adherence. Feedback for performance of these measures to hospitals, decisions support tools, and educational initiatives are needed to improve guideline adherence.

Avoiding Locoregional Overtreatment in Older Adults With Early-Stage Breast Cancer.

Advances in the treatment of older women with early-stage breast cancer, particularly opportunities for de-escalation of therapy, have afforded patients and providers opportunity to individualize care. As the majority of women ≥65 have estrogen receptor-positive, HER2-negative disease, locoregional therapy (surgery and/or radiation) may be tailored based on a patient's physiologic age to avoid either over- or undertreatment. To determine who would derive benefit from more or less intensive therapy, an accurate assessment of an older patient's physiologic age and incorporation of patient-specific values are paramount. While there now exist well-validated geriatric assessment tools whose use is encouraged by the American Society of Clinical Oncology when considering systemic therapy, these instruments have not been widely integrated into the locoregional breast cancer care model. This review aims to highlight the importance of assessing frailty and the concepts of and over- and undertreatment, in the context of trial data supporting opportunities for safe deescalation of locoregional therapy, when treating older women with early-stage breast cancer.

Physician-level variation in axillary surgery in older adults with T1N0 hormone receptor-positive breast cancer: A retrospective population-based cohort study.

INTRODUCTION: We sought to determine how considerations specific to older adults impact between- and within-surgeon variation in axillary surgery use in women ≥70 years with T1N0 HR+ breast cancer. MATERIALS AND METHODS: Females ≥70 years with T1N0 HR+/HER2-negative breast cancer diagnosed from 2013 to 2015 in SEER-Medicare were identified and linked to the American Medical Association Masterfile. The outcome of interest was axillary surgery. Key patient-level variables included the Charlson Comorbidity Index (CCI) score, frailty (based on a claims-based frailty index score), and age (≥75 vs <75). Multilevel mixed models with surgeon clusters were used to estimate the intracluster correlation coefficient (ICC) (between-surgeon variance), with 1-ICC representing within-surgeon variance. RESULTS: Of the 4410 participants included, 6.1% had a CCI score of ≥3, 20.7% were frail, and 58.3% were ≥ 75 years; 86.1% underwent axillary surgery. No surgeon omitted axillary surgery in all patients, but 42.3% of surgeons performed axillary surgery in all patients. In the null model, 10.5% of the variance in the axillary evaluation was attributable to between-surgeon differences. After adjusting for CCI score, frailty, and age in mixed models, between-surgeon variance increased to 13.0%. DISCUSSION: In this population, axillary surgery varies more within surgeons than between surgeons, suggesting that surgeons are not taking an "all-or-nothing" approach. Comorbidities, frailty, and age accounted for a small proportion of the variation, suggesting nuanced decision-making may include additional, unmeasured factors such as differences in surgeon-patient communication.

Not Too Little, Not Too Much: Optimizing More Versus Less Locoregional Treatment for Older Patients With Breast Cancer.

Although undertreatment of older women with aggressive breast cancers has been a concern for years, there is increasing recognition that some older women are overtreated, receiving therapies unlikely to improve survival or reduce morbidity. De-escalation of surgery may include breast-conserving surgery over mastectomy for appropriate candidates and omitting or reducing extent of axillary surgery. Appropriate patients to de-escalate surgery are those with early-stage breast cancer, favorable tumor characteristics, are clinically node-negative, and who may have other major health issues. De-escalation of radiation includes reducing treatment course length through hypofractionation and ultrahypofractionation regimens, reducing treatment volumes through partial breast irradiation, omission of radiation for select patients, and reducing radiation dose to normal tissues. Shared decision making, which aims to facilitate patients making decisions concordant with their values, can guide health care providers and patients through complicated decisions optimizing breast cancer care.