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Black race as a prognostic factor in triple-negative breast cancer patients treated with breast-conserving therapy: a large, single-institution retrospective analysis

  • Epidemiology
  • Published:
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Abstract

Triple-negative breast cancer (TNBC) disproportionately affects black women. However, black race as a prognostic factor in TNBC has not been well studied. We evaluated the effect of race, among other variables, on outcomes in women with TNBC. A total of 704 patients with stages I–III TNBC treated with breast-conserving surgery ± adjuvant radiation therapy (RT) and chemotherapy were identified from an institutional database. Competing risk analyses, Kaplan–Meier methods, and Cox proportional hazards models identified associations among clinicopathologic variables on locoregional recurrence (LRR), distant recurrence (DR), and overall survival (OS). LRR was defined as a biopsy proven, triple receptor-negative recurrence in the ipsilateral breast or regional lymph nodes. At a median follow-up of 51 months, there were 55 LRR, 61 DR, and 111 death events. Compared to non-black women, black women had higher disease stage and were more likely to receive axillary lymph node dissection, chemotherapy, and nodal irradiation (all P < 0.05). After adjustment for stage, age, lymphovascular invasion, chemotherapy, and RT on multivariate analysis, black race was prognostic for increased risk of LRR (hazard ratio [HR] = 3.17; 95 % confidence interval: 1.7–5.8; P = 0.0002). The 5-year risk of regional recurrence was higher in black women (10 vs. 2 %, P < 0.0001), but local failures were similar between groups (3.0 vs. 5.3 %, P = 0.15). RT was an independent predictor for decreased LRR and increased OS on multivariate analyses (P = 0.0006 and P = 0.0003, respectively). Black women with TNBC had equivalent local control, but higher risk of regional nodal failure, compared with non-black counterparts. The routine use of comprehensive nodal irradiation may be beneficial for black women with TNBC.

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Abbreviations

ALND:

Axillary lymph node dissection

BMI:

Body mass index

BCS:

Breast-conserving surgery

BRCA1/BRCA2:

Breast cancer susceptibility genes

CI:

Confidence intervals

DR:

Distant recurrence

DOC:

Death due to cause other than breast cancer

HR:

Hazard ratio

LRR:

Locoregional recurrence

LVI:

Lymphovascular invasion

MSKCC:

Memorial Sloan-Kettering Cancer Center

OS:

Overall survival

PR:

Progesterone receptor

RT:

Radiation therapy

SCV:

Supraclavicular

SLND:

Sentinel lymph node dissection

TNBC:

Triple-negative breast cancer

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Acknowledgments

We thank the staff of the breast disease management team and the clinical genetics service database at MSKCC for their continuous support in maintaining the retrospective database used for this research.

Conflict of interest

The authors declare that they have no conflict of interest.

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Authors and Affiliations

  1. Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA

    Carmen A. Perez, Zachary S. Zumsteg, Gaorav Gupta, Brittany Arnold, Beryl McCormick, Simon N. Powell & Alice Y. Ho

  2. Department of Surgery, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA

    Monica Morrow

  3. Department of Biostatistics and Epidemiology, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA

    Sujata M. Patil

  4. Department of Medicine, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA

    Tiffany A. Traina & Mark E. Robson

  5. Department of Pathology, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA

    Yong H. Wen

Authors
  1. Carmen A. Perez
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  2. Zachary S. Zumsteg
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  3. Gaorav Gupta
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  4. Monica Morrow
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  5. Brittany Arnold
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  6. Sujata M. Patil
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  7. Tiffany A. Traina
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  9. Yong H. Wen
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  10. Beryl McCormick
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  11. Simon N. Powell
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  12. Alice Y. Ho
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Corresponding author

Correspondence to Alice Y. Ho.

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Perez, C.A., Zumsteg, Z.S., Gupta, G. et al. Black race as a prognostic factor in triple-negative breast cancer patients treated with breast-conserving therapy: a large, single-institution retrospective analysis. Breast Cancer Res Treat 139, 497–506 (2013). https://doi.org/10.1007/s10549-013-2550-x

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  • DOI: https://doi.org/10.1007/s10549-013-2550-x

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