Samilia Obeng-Gyasi1,2,3, Sarah Asad4, James L Fisher4,5, Saurabh Rahurkar6, Daniel G Stover4,7,5,8. 1. Division of Surgical Oncology, Department of Surgery, The Ohio State University, Columbus, OH, USA. Samilia.Obeng-Gyasi@osumc.edu. 2. The Ohio State University College of Medicine, Columbus, OH, USA. Samilia.Obeng-Gyasi@osumc.edu. 3. Stefanie Spielman Comprehensive Breast Center, Columbus, OH, USA. Samilia.Obeng-Gyasi@osumc.edu. 4. The Ohio State University College of Medicine, Columbus, OH, USA. 5. James Cancer Hospital and Solove Research Institute, Columbus, OH, USA. 6. Department of Biomedical Informatics, Lincoln Tower, The Ohio State University, Columbus, OH, USA. 7. Stefanie Spielman Comprehensive Breast Center, Columbus, OH, USA. 8. Division of Medical Oncology, Ohio State University Comprehensive Cancer Center, Columbus, OH, USA.
Abstract
BACKGROUND: A subset of triple-negative breast cancer (TNBC) is characterized by aggressive disease, rapid relapse, and mortality within 24 months of diagnosis, termed "rapid relapse" TNBC (rrTNBC). The objective of this study is to define the association between sociodemographic variables and surgical management among rrTNBC patients in the Surveillance, Epidemiology and End Results (SEER) Program. METHODS: TNBC patients diagnosed from January 1, 2010 to December 31, 2014 with local or regional disease were identified in SEER. Patients were stratified as rrTNBC, defined as disease specific mortality ≤ 24 months after diagnosis, and non-rrTNBC. Chi-squared tests, t tests, and multivariable logistic regression were used to assess the association of rapid relapse with sociodemographic variables and surgical management. RESULTS: The cohort included 8% (1378/17,369) rrTNBCs. A higher proportion of rrTNBC patients had no surgery (11.7%) compared with non-rrTNBC (2.6%). Omission of axillary staging among patients who had surgery was 6.2% rrTNBC versus 4.5% non-rrTNBC. Black race (odds ratio [OR] 1.22, 95% confidence interval [CI] 1.05-1.43; p = 0.01; white ref), Medicaid or no insurance (Medicaid OR 1.53, 95% CI 1.31-1.79; p < 0.001; no insurance OR 1.74, 95% CI 1.31-2.32; p < 0.001; private ref), single status (OR 1.19, 95% CI 1.01-1.39; p = 0.03; married ref), no breast (OR 2.35, 95% CI 1.77-3.11; p < 0.001; mastectomy ref), and no axillary surgery (OR 1.44, 95% CI 1.13-1.83; p = 0.003 axillary surgery ref) were associated with rapid relapse. CONCLUSIONS: Medicaid or no insurance, single status, black race, and no surgery are associated with higher odds of rrTNBC in SEER. These results indicate an interplay between socioeconomic factors, clinical and genomic variables may be disproportionately contributing to worse outcomes among a subset of TNBC patients.
BACKGROUND: A subset of triple-negative breast cancer (TNBC) is characterized by aggressive disease, rapid relapse, and mortality within 24 months of diagnosis, termed "rapid relapse" TNBC (rrTNBC). The objective of this study is to define the association between sociodemographic variables and surgical management among rrTNBC patients in the Surveillance, Epidemiology and End Results (SEER) Program. METHODS: TNBC patients diagnosed from January 1, 2010 to December 31, 2014 with local or regional disease were identified in SEER. Patients were stratified as rrTNBC, defined as disease specific mortality ≤ 24 months after diagnosis, and non-rrTNBC. Chi-squared tests, t tests, and multivariable logistic regression were used to assess the association of rapid relapse with sociodemographic variables and surgical management. RESULTS: The cohort included 8% (1378/17,369) rrTNBCs. A higher proportion of rrTNBC patients had no surgery (11.7%) compared with non-rrTNBC (2.6%). Omission of axillary staging among patients who had surgery was 6.2% rrTNBC versus 4.5% non-rrTNBC. Black race (odds ratio [OR] 1.22, 95% confidence interval [CI] 1.05-1.43; p = 0.01; white ref), Medicaid or no insurance (Medicaid OR 1.53, 95% CI 1.31-1.79; p < 0.001; no insurance OR 1.74, 95% CI 1.31-2.32; p < 0.001; private ref), single status (OR 1.19, 95% CI 1.01-1.39; p = 0.03; married ref), no breast (OR 2.35, 95% CI 1.77-3.11; p < 0.001; mastectomy ref), and no axillary surgery (OR 1.44, 95% CI 1.13-1.83; p = 0.003 axillary surgery ref) were associated with rapid relapse. CONCLUSIONS: Medicaid or no insurance, single status, black race, and no surgery are associated with higher odds of rrTNBC in SEER. These results indicate an interplay between socioeconomic factors, clinical and genomic variables may be disproportionately contributing to worse outcomes among a subset of TNBC patients.
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