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Transcriptome Analysis Identifies ALCAM Overexpression As a Prognosis Biomarker in Laryngeal Squamous Cell Carcinoma

Overview
Journal Cancers (Basel)
Publisher MDPI
Specialty Oncology
Date 2020 Feb 23
PMID 32085563
Citations 11
Authors
Affiliations
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Abstract

Background: Laryngeal squamous cell carcinoma (LSCC) is one of the most incident tumors in the world, especially in developing countries, such as Brazil. Different from other tumors, LSCC prognosis did not improve during the past four decades. Therefore, the objective of this study was to develop biomarkers that can predict LSCC patient's prognosis.

Results: Transcriptome analysis pointed out 287 overexpressed genes in LSCC in comparison to adjacent mucosa. Among these, a gene-pattern signature was created with 24 genes associated with prognosis. The Bayesian clustering of both Brazil and The Cancer Genome Atlas (TCGA) data pointed out clusters of samples possessing significative differences in the prognosis, and the expression panel of three genes (, , and ) was capable to distinguish patients with worse prognosis with an accuracy of 97%. Survival analyses with TCGA data highlighted gene expression as an independent prognostic factor for LSCC. This was further confirmed through immunohistochemistry, using a validation set of Brazilian patients. A expression was not associated with prognosis for other head and neck tumor sites.

Conclusion: ALCAM overexpression seems to be an independent prognosis biomarker for LSCC patients.

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