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Erschienen in: Virchows Archiv 1/2011

01.01.2011 | Original Article

Histopathological subclassification of triple negative breast cancer using prognostic scoring system: five variables as candidates

verfasst von: Minoru Miyashita, Takanori Ishida, Kazuyuki Ishida, Kentaro Tamaki, Masakazu Amari, Mika Watanabe, Noriaki Ohuchi, Hironobu Sasano

Erschienen in: Virchows Archiv | Ausgabe 1/2011

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Abstract

We attempted to subclassify triple negative breast cancer (TNBC) cases into subgroups according to clinical outcome or prognosis of TNBC patients using archival specimens. We analyzed 102 Japanese cases of invasive TNBC who underwent surgery between January 1998 and December 2007. The clinicopathological factors and clinical information were retrospectively retrieved from reviewing the charts of the patients. Immunohistochemical staining was performed for estrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor receptor 2 (HER2), epidermal growth factor receptor 1 (EGFR1), CK5/6, CK14, Ki-67, and CD31 for microvessel density (MVD). Median follow-up time of the patients was 68.5 months. Multivariable analysis demonstrated that pathologic node status was the most significantly associated with relapse-free survival (RFS) and breast cancer-specific survival (BCSS) of these patients. Pathological tumor size, basal-like type, Ki-67 labeling index (LI) and MVD were also independently associated with RFS and BCSS. Based on these results, we devised the risk score system reflecting hazard ratios of these prognostic factors above. With this system, TNBC patients in this study were classified into three subgroups (low-risk group: score 0–3, intermediate-risk group: score 4–7 and high-risk group: score 8–10). The significant difference of RFS and BCSS was detected among these three different subgroups of the patients (p < 0.05). We propose the risk score system, which incorporated pathologic nodal status, size of the primary tumor, the presence or absence of basal-like features, Ki-67 LI, and MVD in order to predict postoperative clinical course of the Japanese TNBC patients.
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Metadaten
Titel
Histopathological subclassification of triple negative breast cancer using prognostic scoring system: five variables as candidates
verfasst von
Minoru Miyashita
Takanori Ishida
Kazuyuki Ishida
Kentaro Tamaki
Masakazu Amari
Mika Watanabe
Noriaki Ohuchi
Hironobu Sasano
Publikationsdatum
01.01.2011
Verlag
Springer-Verlag
Erschienen in
Virchows Archiv / Ausgabe 1/2011
Print ISSN: 0945-6317
Elektronische ISSN: 1432-2307
DOI
https://doi.org/10.1007/s00428-010-1009-2

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