Abstract PO2-26-05: Disparities at the Convergence of Race and Ethnicity: Examining Trends and Outcomes in Young Women Diagnosed with Breast Cancer

Abstract Purpose: In breast cancer, research has shown that race/ethnicity can be associated with disease predisposition, access to care, and outcomes. There are numerous studies that combine Hispanic and Haitian women of all races into a single group may overlook opportunities to identify important characteristics within this heterogeneous group that could more accurately predict outcomes and reveal opportunities to improve care. While these groups have been studied, there is limited data about the impact race and ethnicity has on young adult populations with breast cancer. In this study, we sought to compare tumor subtype, stage at diagnosis, time to surgery (TTS), and overall survival (OS) among Hispanic and Haitian patients to patients of non-Hispanic descent. Methods: Women 18 years of age or older who had been diagnosed with stage 0-IV breast cancer and who had undergone lumpectomy or mastectomy were identified in the National Cancer Database (2015-2021). Tumor subtype and stage at diagnosis were compared by race/ethnicity. Multivariable linear regression and Cox proportional hazards modeling were used to estimate associations between race/ethnicity and adjusted TTS and OS, respectively. Results: A total of 48,150 patients were included in this study. Age ranged from 18-40. (American Indian AI: 79 0.2%; Haitian: 15,011 31.2%; White: 20,109 85.48%; Hispanic: 13,030 27%. Hispanic women had higher rates of triple-negative disease (23.9%) than did Haitian women (11.5%) and white women (10.9%; P .001). Hispanic women had higher rates of node-positive disease (26.2%) in comparison to Haitian women (17%) and Non-Haitian/Hispanic women (10% P .001). Hispanic women had worse PFS when diagnosed at Stage II and III (37 and 39 months, respectively) than Haitian women (57 and 59 months, respectively) and Non-Haitian/Hispanic women (82 and 87 months). Hispanic women had worse OS when diagnosed at Stage II and III (45 and 49 months) than Black women (70 and 75 months) and non- women (95 and 99 months). Conclusion: Hispanic women had worse PFS versus non-Hispanic and Haitian women as well as present with high-risk characteristics and nodal disease at the time of presentation. This suggests that racial differences in tumor subtype and nodal stage among Hispanic women highlight the importance of developing additional studies which can investigate the disparity in patient outcomes with young Hispanic women in breast cancer research. Citation Format: Ragisha Gopalakrishnan, Esha Gandhi, Maria Fernandez. Disparities at the Convergence of Race and Ethnicity: Examining Trends and Outcomes in Young Women Diagnosed with Breast Cancer abstract. In: Proceedings of the 2023 San Antonio Breast Cancer Symposium; 2023 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2024;84(9 Suppl):Abstract nr PO2-26-05.