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Thioredoxin-interacting protein is an independent risk stratifier for breast ductal carcinoma in situ

Miligy, Islam M.; Gorringe, Kylie L.; Toss, Michael S.; Al-Kawaz, Abdubaqi; Simpson, Peter; Diez-Rodriguez, Maria; Nolan, Christopher C.; Ellis, Ian O.; Green, Andrew R.; Rakha, Emad

Authors

Islam M. Miligy

Kylie L. Gorringe

Michael S. Toss

Abdubaqi Al-Kawaz

Peter Simpson

Maria Diez-Rodriguez

Christopher C. Nolan

EMAD RAKHA Emad.Rakha@nottingham.ac.uk
Professor of Breast Cancer Pathology



Abstract

Current clinicopathological parameters are useful predictors of breast ductal carcinoma in situ behaviour, but they are insufficient to define high risk patients for disease progression precisely. Thioredoxin interacting protein (TXNIP) is a key player of oxidative stress. This study aims to evaluate the role of TXNIP as a predictor of ductal carcinoma in situ progression. Tissue microarrays from 776 pure ductal carcinoma in situ and 239 mixed ductal carcinoma in situ and invasive tumors were constructed. All patients were treated at a single institution with a long-term follow-up and TXNIP expression was assessed using immunohistochemistry. TXNIP expression was investigated in terms of associations with clinicopathological and molecular features and patient outcome. Loss/reduced cytoplasmic expression of TXNIP was associated with features of aggressiveness including high nuclear grade (p=1.6x10-5), presence of comedo necrosis (p=0.001) and oestrogen receptor negative (ER-)/HER2- ductal carcinoma in situ (p=4.6x10-5). Univariate analysis showed an inverse association between TXNIP expression and outcome in terms of shorter local recurrence free survival (p=0.009). Multivariable analyses showed that independent predictors of ductal carcinoma in situ recurrence were low TXNIP expression (p=0.005, HR=0.51 and 95%CI: 0.32-0.81), larger ductal carcinoma in situ size and high nuclear grade. TXNIP functions as a tumor suppressor gene with loss of its expression associated with ductal carcinoma in situ recurrence. TXNIP can be used as a potentially useful marker in prognostic stratification of ductal carcinoma in situ for management decisions.

Journal Article Type Article
Publication Date Jun 28, 2018
Journal Modern Pathology
Print ISSN 0893-3952
Electronic ISSN 1530-0285
Publisher Nature Publishing Group
Peer Reviewed Peer Reviewed
Volume 31
Issue 12
Pages 1807-1815
APA6 Citation Rakha, E. A., Al-Kawaz, A. A., Miligy, I. M., Miligy, I., Gorringe, K. L., Toss, M. S., …Rakha, E. (2018). Thioredoxin-interacting protein is an independent risk stratifier for breast ductal carcinoma in situ. Modern Pathology, 31(12), 1807-1815. doi:10.1038/s41379-018-0086-7
DOI https://doi.org/10.1038/s41379-018-0086-7
Keywords Suctal carcinoma in situ; Predictor; Outcome; Progression; TXNIP, Immunohistochemistry
Publisher URL https://www.nature.com/articles/s41379-018-0086-7
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf

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