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Breast cancer prognostic classification in the molecular era: The role of histological grade

Rakha, EA and Reis-Filho, JS and Baehner, F and Dabbs, DJ and Decker, T and Eusebi, V and Fox, SB and Ichihara, S and Jacquemier, J and Lakhani, SR and Palacios, J and Richardson, AL and Schnitt, SJ and Schmitt, FC and Tan, PH and Tse, GM and Badve, S and Ellis, IO (2010) Breast cancer prognostic classification in the molecular era: The role of histological grade. Breast Cancer Research, 12 (4). ISSN 1465-5411

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Breast cancer is a heterogeneous disease with varied morphological appearances, molecular features, behavior, and response to therapy. Current routine clinical management of breast cancer relies on the availability of robust clinical and pathological prognostic and predictive factors to support clinical and patient decision making in which potentially suitable treatment options are increasingly available. One of the best-established prognostic factors in breast cancer is histological grade, which represents the morphological assessment of tumor biological characteristics and has been shown to be able to generate important information related to the clinical behavior of breast cancers. Genome-wide microarray-based expression profiling studies have unraveled several characteristics of breast cancer biology and have provided further evidence that the biological features captured by histological grade are important in determining tumor behavior. Also, expression profiling studies have generated clinically useful data that have significantly improved our understanding of the biology of breast cancer, and these studies are undergoing evaluation as improved prognostic and predictive tools in clinical practice. Clinical acceptance of these molecular assays will require them to be more than expensive surrogates of established traditional factors such as histological grade. It is essential that they provide additional prognostic or predictive information above and beyond that offered by current parameters. Here, we present an analysis of the validity of histological grade as a prognostic factor and a consensus view on the significance of histological grade and its role in breast cancer classification and staging systems in this era of emerging clinical use of molecular classifiers. © 2010 BioMed Central Ltd.


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Item Type: Article
Status: Published
CreatorsEmailPitt UsernameORCID
Rakha, EA
Reis-Filho, JS
Baehner, F
Dabbs, DJdjd1@pitt.eduDJD1
Decker, T
Eusebi, V
Fox, SB
Ichihara, S
Jacquemier, J
Lakhani, SR
Palacios, J
Richardson, AL
Schnitt, SJ
Schmitt, FC
Tan, PH
Tse, GM
Badve, S
Ellis, IO
Date: 24 August 2010
Date Type: Publication
Journal or Publication Title: Breast Cancer Research
Volume: 12
Number: 4
DOI or Unique Handle: 10.1186/bcr2607
Schools and Programs: School of Medicine > Pathology
Refereed: Yes
ISSN: 1465-5411
Article Type: Review
Date Deposited: 14 Nov 2016 16:51
Last Modified: 09 Feb 2019 05:55


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