Oncotarget

Research Papers:

Phosphorylated Akt1 expression is associated with poor prognosis in cutaneous, oral and sinonasal melanomas

Ciro Soares _, Thayná Melo de Lima Morais, Roman Carlos, Fernanda Viviane Mariano, Albina Altemani, Maria Goretti Freire de Carvalho, Marcelo Brum Corrêa, Rodrigo Ribas Dias dos Reis, Luciana Schultz Amorim, Oslei Paes de Almeida and Jacks Jorge

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Oncotarget. 2018; 9:37291-37304. https://doi.org/10.18632/oncotarget.26458

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Abstract

Ciro Soares1, Thayná Melo de Lima Morais1, Roman Carlos2, Fernanda Viviane Mariano1,3, Albina Altemani1,3, Maria Goretti Freire de Carvalho4, Marcelo Brum Corrêa5, Rodrigo Ribas Dias dos Reis6, Luciana Schultz Amorim7, Oslei Paes de Almeida1 and Jacks Jorge1

1Department of Oral Diagnosis, Area of Pathology, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil

2Pathology Division, Centro Clínico de Cabeza y Cuello/Hospital Herrera Llerandi, Guatemala City, Guatemala

3Department of Pathology, Faculty of Medical Sciences, University of Campinas, Campinas, São Paulo, Brazil

4Private Pathology Service, Natal, Rio Grande do Norte, Brazil

5Head and Neck Surgery Department - Oncology Center (CEON), Fornecedores de Cana Hospital, Piracicaba, São Paulo, Brazil

6Oncology Surgery Department - Cancer Center (CECAN), Santa Casa Hospital, Piracicaba, São Paulo, Brazil

7Institute of Pathological Anatomy, Piracicaba, São Paulo, Brazil

Correspondence to:

Ciro Soares, email: ciro.dss@gmail.com

Keywords: cutaneous melanomas; mucosal melanomas; p-Akt1; immunohistochemistry; prognosis

Received: August 08, 2018     Accepted: November 26, 2018     Published: December 18, 2018

ABSTRACT

Melanomas are highly aggressive tumours derived from melanocytes, which occur most commonly in the skin. Occasionally, these tumours may appear in oral and sinonasal mucous membranes. In this study, we performed a comparative analysis of the Phosphorylated Akt1 (p-Akt1) expression in 144 patients affected by cutaneous (CM), 34 oral cavity (OM), and 31 sinonasal melanomas (SNM). Similar to the metastatic cutaneous melanomas, p-Akt1 was overexpressed in 17/34 of the oral cavity and 20/31 of the sinonasal melanomas. In addition, the p-Akt1-nuclear expression was associated with poorer cancer-specific survival in cutaneous (P < .0001), oral (P < .0001), and sinonasal (P = .001) melanomas. Multivariate analysis showed p-Akt1 to be an independent prognostic marker in oral (P = .041) and sinonasal (P < .0001) melanomas patients. In conclusion, p-Akt1 overexpression is an independent prognostic marker in mucosal melanomas and is significantly up-regulated in sinonasal melanomas. As both mucosal and metastatic cutaneous melanomas showed high frequency of p-Akt1 expression, these findings suggest that mucosal melanomas have a biological behaviour, similar to the aggressive cutaneous melanomas.


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