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Background Adenoid cystic breast carcinoma (ACC) is a rare subtype of triple-negative breast cancer. We aim to characterize the treatment patterns and clinical outcomes of women diagnosed with ACC at a large medical center. Methods Female patients diagnosed with ACC at our institution between 2009 and 2019 were retrospectively identified. Patients with limited clinicopathologic data were excluded. Results In our final study cohort (n = 9), the majority of ACCs (6/9, 66.7%) were hormone receptor (−) (HR−) and HER-2/neu (−) (HER2−), while 3 ACCs were HR+ HER2−. Two patients received adjuvant chemotherapy, and 4 patients received adjuvant radiotherapy. The crude local and distant recurrence rate of our cohort was 22.2% and 11.1% (median follow-up of 36 months). Conclusions The majority of ACCs were triple negative but some ACCs were HR+. The unadjusted local and distant recurrence rates were not negligible, suggesting that adjuvant chemotherapy and radiotherapy may be warranted in select cases.

Purpose To assess knowledge of obesity-associated cancer risk, self-awareness of BMI status, and willingness to engage in weight loss intervention in breast cancer survivors with overweight and obesity as a companion study for a novel weight loss program using a telehealth platform (NCT04855552). Methods Breast cancer survivors with BMI ≥ 25 kg/m 2 were surveyed to assess self-perception of BMI, knowledge of obesity-related cancer risk, and willingness to participate in weight loss programs. Multivariable logistic regression was used to assess factors associated with willingness to participate. Results Of the 122 participants, 73 (59.8%) had BMI 25.0–29.9 kg/m 2 (overweight) and 49 (40.2%) had BMI ≥ 30 (obesity). Patients with obesity were more likely to underestimate their BMI than those with overweight, 40.8% vs. 23.3% ( p = 0.03 ) . The majority (82.0%) indicated awareness that obesity increases breast cancer risk and 57.4% expressed interest in a weight loss program. Patients with knowledge of obesity-related breast cancer risk (91.4% willing vs. 69.2% not willing, p < 0.01) were more willing to participate in a weight loss program on univariable and multivariable analyses ( p < 0.01). Conclusion Our results underscore the importance of raising patients’ awareness of obesity-related health risks and individual BMI category. Future work in the development of better education and communication tools to improve awareness will likely improve the adoption rate of healthy lifestyles in at-risk patients. Supplementary Information The online version contains supplementary material available at 10.1007/s10549-022-06546-y.

Background National medical/surgical organizations have recommended the use of neoadjuvant endocrine therapy (NET) to bridge surgery delay of weeks to months for patients with hormone receptor positive (HR+) breast cancer during the ongoing coronavirus disease 2019 (COVID-19) pandemic. The effects of NET of varying durations on pathologic response are unclear. Using the National Cancer Database (NCDB), we evaluated objective response to short (< 9 weeks), moderate (9–27 weeks), and long (> 27 weeks) duration of NET. Patients and Methods The study cohort included female patients diagnosed with nonmetastatic invasive HR+ breast cancer, stratifying by those who received NET versus no NET between 2004 and 2016. Pathologic response was grouped into four categories (complete, downstaged, stable, upstaged) by comparing clinical and pathologic staging data. Objective response to NET included complete, downstaged, and stable pathologic response. Clinical characteristics were compared using χ 2 and analysis of variance (ANOVA) tests. Multivariable logistic regression was used to determine factors associated with NET use and objective response according to NET duration. Results A minority (1.2%) received NET in our cohort. Factors associated with NET use included older age, non-Black patients, more advanced clinical stage, higher comorbidity score, government insurance, and lobular histology. Objective response rate (ORR) was 56.7%, 52.1%, and 49.0% after short, moderate, and long NET duration, respectively. Conclusion Short NET duration did not result in an inferior ORR. Future study to evaluate the interaction between surgery delay and NET use on clinical outcome will provide insights into the safety of NET to bridge potential surgery delay in patients with HR+ breast cancer. Supplementary Information The online version contains supplementary material available at 10.1245/s10434-021-10287-5.

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