Genetic and protein markers related to laryngeal epithelial precursor lesions and their neoplastic progression

Abstract

Conclusion: Various biomarkers might ultimately prove to have prognostic value and could be clinically relevant. It is mandatory confirm the prognostic power of these markers in large, well-designed, and prospective studies. Objective: The aim of this study was to investigate the possible role of specific genes and proteins in laryngeal tumorigenesis. Methods: Genetic analysis by multiple ligation-dependent probe amplification and analysis of protein expression by immunohistochemistry were carried out in a series of 50 tissue samples. Results: In the smoker normal mucosa group TP53 loss was predominant, whereas in the epithelial precursor lesions (EPLs) CDKN2A loss and BCL2L1 gain were most frequent. EPL with progression presented CTNNB1 loss. Positivity at cytoplasm for β-catenin, cyclin D1 and p53 was detected in all EPL cases with progression to invasive carcinoma. Multivariate analysis showed that expression of β-catenin and loss of CTTNB1 were associated with laryngeal cancer risk.

Keywords::

• Larynx tumors
• dysplasia
• multiple ligation-dependent probe amplification
• MLPA
• immunohistochemistry

Declaration of interest: The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.