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Poster Session Abstracts

Abstract P1-09-04: New Orleans has the highest incidence rates of triple negative breast cancer

MM Loch, X Li, M-C Hsieh, VW Chen and X-C Wu
MM Loch
Louisiana State University Health Sciences Center, New Orleans, LA; Louisiana State University School of Public Health, New Orleans, LA
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X Li
Louisiana State University Health Sciences Center, New Orleans, LA; Louisiana State University School of Public Health, New Orleans, LA
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M-C Hsieh
Louisiana State University Health Sciences Center, New Orleans, LA; Louisiana State University School of Public Health, New Orleans, LA
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VW Chen
Louisiana State University Health Sciences Center, New Orleans, LA; Louisiana State University School of Public Health, New Orleans, LA
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X-C Wu
Louisiana State University Health Sciences Center, New Orleans, LA; Louisiana State University School of Public Health, New Orleans, LA
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DOI: 10.1158/1538-7445.SABCS15-P1-09-04 Published February 2016
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Abstracts: Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium; December 8-12, 2015; San Antonio, TX

Abstract

Background: We previously demonstrated increased incidence rates of triple negative breast cancer (TNBC) in Black women (BW) in New Orleans (NO) and Louisiana (LA) compared with SEER 17. We explored the hypothesis that BW in NO had a higher incidence of TNBC than in BW other metro areas in the SEER Program.

Methods: We analyzed tumor characteristics of invasive female breast cancers diagnosed 2010-12 from SEER, focusing on racial disparities. We compared LA data with SEER 17 and metropolitan areas (Atlanta, Detroit, Los Angeles and San Francisco). Predictors of TNBC were identified in multivariate logistic regression.

Results: Overall incidence rate of TNBC in BW was significantly higher in NO (32 per 100,000) than in the rest of LA (24 per 100,000) and the SEER metro areas combined (23 per100,000). Detroit had the 2nd highest rates (27.3 per 100,000) followed by Los Angeles, San Francisco and Atlanta (23.2, 23, 22.4 respectively). Compared with SEER 17, the rate ratio of TNBC was 38% higher for BW in NO (CI: 1.17-1.61) and 17% higher for BW in Detroit (CI: 1.06-1.29). Compared with other LA metro areas, the rate ratio of TNBC was 44% higher for BW in NO (CI: 1.10-1.91). Young age (<65) and black race predicted TNBC after adjusting for insurance status, tumor size, lymph node status, grade and derived AJCC stage.

Conclusions: The incidence rates and rate ratios of TNBC in BW in NO and LA are not only significantly higher than in SEER 17 but also higher than any other SEER metro area. We will explore this dataset further by analyzing BMI, comorbidities and SES. This disparity in BW in NO has clinical implications and translational research potential as it enables us to broaden the understanding and treatment of this aggressive disease.

Citation Format: Loch MM, Li X, Hsieh M-C, Chen VW, Wu X-C. New Orleans has the highest incidence rates of triple negative breast cancer. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P1-09-04.

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Cancer Research: 76 (4 Supplement)
February 2016
Volume 76, Issue 4 Supplement
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Abstract P1-09-04: New Orleans has the highest incidence rates of triple negative breast cancer
MM Loch, X Li, M-C Hsieh, VW Chen and X-C Wu
Cancer Res February 15 2016 (76) (4 Supplement) P1-09-04; DOI: 10.1158/1538-7445.SABCS15-P1-09-04

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Abstract P1-09-04: New Orleans has the highest incidence rates of triple negative breast cancer
MM Loch, X Li, M-C Hsieh, VW Chen and X-C Wu
Cancer Res February 15 2016 (76) (4 Supplement) P1-09-04; DOI: 10.1158/1538-7445.SABCS15-P1-09-04
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Cancer Research Online ISSN: 1538-7445
Cancer Research Print ISSN: 0008-5472
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