Treatment Disparities, Heterogeneities, and Barriers to Access for Patients with Hormone Receptor-Positive, Human Epidermal Growth Factor Receptor 2-Negative Metastatic Breast Cancer: A National Survey from Brazil.

Breast cancer (BC) is the most common malignancy among Brazilian women, with a high percentage of the cases diagnosed at advanced or metastatic stages (mBC). In Brazil, where 75% of the population depends on the resource-limited public health system (SUS), mBC poses significant treatment challenges and disparities. To characterize this scenario, we conducted an online survey assessing treatment strategies available for HER2-negative, hormone receptor (HR)-positive mBC across public and private health systems. The 48-question survey addressed topics such as waiting time (WT) from oncology unit entry to treatment initiation, availability of oncologic medications, and access to palliative and multidisciplinary care teams. Between 2 August 2022 and 30 September 2022, a total of 180 oncologists were invited, and 150 met the inclusion criteria. The median WT for surgery was 60 days in the SUS versus 30 days in the private sector (p < 0.0001), and for chemotherapy, 30 days in the SUS versus 15 days privately (p < 0.0001). Endocrine therapy was the preferred first-line treatment in the SUS (83.3%), while fulvestrant was available to only 48% of respondents. Additionally, specialized palliative care teams were available according to 66% of SUS respondents compared with 82% in the private system (p = 0.001). These findings underscore persistent disparities in mBC treatment, likely driven by limited governmental health investment.