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Interleukin-33 expression indicates a favorable prognosis in malignant salivary gland tumors


Rössle, Matthias; Cathomas, Gieri; Bonapace, Laura; Sachs, Melanie; Dehler, Silvia; Storz, Martina; Huber, Gerhard; Moch, Holger; Junt, Tobias; Mertz, Kirsten D (2016). Interleukin-33 expression indicates a favorable prognosis in malignant salivary gland tumors. International journal of surgical pathology, 24(5):394-400.

Abstract

The cytokine interleukin-33 (IL-33) is abundantly expressed in epithelial barrier tissues such as salivary glands. Here, we characterized nuclear IL-33 protein expression by immunohistochemistry in benign and malignant salivary gland tumors and associated it with disease outcome. Most benign salivary gland tumors expressed IL-33, and all Warthin's tumors showed strong and consistent IL-33 expression in the basally oriented cells of their bilayered epithelium. In the malignant group of neoplasms, nuclear IL-33 expression was limited to specific tumor entities-for example, to epithelial-myopepithelial carcinomas (n = 9/11), acinic cell carcinomas (n = 13/27), and oncocytic carcinomas (n = 2/2). IL-33 expression in the combined group of malignant salivary gland neoplasms was significantly associated with favorable histological parameters, lack of metastasis, and longer overall survival, compared with IL-33-negative tumors. We conclude that IL-33 expression is a novel prognostic marker for malignant salivary gland tumors with potential use in clinical diagnostics.

Abstract

The cytokine interleukin-33 (IL-33) is abundantly expressed in epithelial barrier tissues such as salivary glands. Here, we characterized nuclear IL-33 protein expression by immunohistochemistry in benign and malignant salivary gland tumors and associated it with disease outcome. Most benign salivary gland tumors expressed IL-33, and all Warthin's tumors showed strong and consistent IL-33 expression in the basally oriented cells of their bilayered epithelium. In the malignant group of neoplasms, nuclear IL-33 expression was limited to specific tumor entities-for example, to epithelial-myopepithelial carcinomas (n = 9/11), acinic cell carcinomas (n = 13/27), and oncocytic carcinomas (n = 2/2). IL-33 expression in the combined group of malignant salivary gland neoplasms was significantly associated with favorable histological parameters, lack of metastasis, and longer overall survival, compared with IL-33-negative tumors. We conclude that IL-33 expression is a novel prognostic marker for malignant salivary gland tumors with potential use in clinical diagnostics.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Clinic for Otorhinolaryngology
04 Faculty of Medicine > University Hospital Zurich > Institute of Pathology and Molecular Pathology
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:23 February 2016
Deposited On:11 May 2016 19:16
Last Modified:26 Feb 2017 08:38
Publisher:Sage Publications Ltd.
ISSN:1066-8969
Publisher DOI:https://doi.org/10.1177/1066896916633856
PubMed ID:26912475

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