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ISSN-2155-9929

Journal of Molecular Biomarkers & Diagnosis
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Research Article

Assessment of Ki67 As a Prognostic Marker in Hormone Receptor Positive Breast Cancer: A Retrospective Study on An Indian Cohort

Charusheila Ramkumar, Chandra Prakash, Lekshmi Madhav, Arun Kumar, Chetana Basavaraj, Prathima R, Nirupama Naidu, and Manjiri M Bakre*

OncoStem Diagnostics, 4, Raja Ram Mohan Roy Road, Aanand Towers, 2nd Floor, Bangalore, India

*Corresponding Author:
Manjiri M Bakre
OncoStem Diagnostics, 4, Raja Ram Mohan
Roy Road, Bangalore 560025, India
Tel: +918022240034, +919900923588
E-mail: [email protected]

Received date: December 28, 2016; Accepted date: February 26, 2017; Published date: March 02, 2017

Citation: Ramkumar C, Prakash C, Madhav L, Kumar A, Basavaraj C, et al. (2017) Assessment of Ki67 As a Prognostic Marker in Hormone Receptor Positive Breast Cancer: A Retrospective Study on An Indian Cohort. J Mol Biomark Diagn 8:336. doi: 10.4172/2155-9929.1000336

Copyright: © 2017 Ramkumar C, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

The prognostic utility of the proliferation marker Ki67 to decide breast cancer treatment has been widely investigated and continues to be a source of much controversy. In this study, we evaluated: i) the role of Ki67 as a prognostic and predictive tool in patients with hormone receptor positive (ER+/PR+) carcinoma of the breast and ii) analyzed its correlation with two commonly used clinicopathological parameters, viz node status and tumor grade to predict clinical outcomes. To determine the clinical utility of Ki67 in assessment of breast cancer prognosis, we examined its expression by immunohistochemistry (IHC) in a series of 160 hormone receptor positive patients in a retrospective cohort of Indian patients. Patients were stratified based on Ki67 expression and analyzed for 5-year distant metastasis free survival (DMFS). Amongst the baseline clinicopathologic variables, we found node status, tumor grade, and age correlated significantly with outcome. However no significant correlation was found between Ki67 based risk stratification and patient outcome. Interestingly, increased Ki67 expression was found to correlate significantly with higher tumor grade but not with worse DMFS. In our study, conducted in an Indian cohort comprising 160 patients, Ki67 was not found to be significantly prognostic or predictive in patients with hormone receptor positive breast cancer.

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