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

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 af...

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Published in:Oncotarget 2018-12, Vol.9 (99), p.37291-37304
Main Authors: Soares, Ciro, Melo de Lima Morais, Thayná, Carlos, Roman, Mariano, Fernanda Viviane, Altemani, Albina, Freire de Carvalho, Maria Goretti, Corrêa, Marcelo Brum, Dias Dos Reis, Rodrigo Ribas, Amorim, Luciana Schultz, Paes de Almeida, Oslei, Jorge, Jacks
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container_title Oncotarget
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creator Soares, Ciro
Melo de Lima Morais, Thayná
Carlos, Roman
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Altemani, Albina
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Dias Dos Reis, Rodrigo Ribas
Amorim, Luciana Schultz
Paes de Almeida, Oslei
Jorge, Jacks
description 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 ( < .0001), oral ( < .0001), and sinonasal ( = .001) melanomas. Multivariate analysis showed p-Akt1 to be an independent prognostic marker in oral ( = .041) and sinonasal ( < .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.
doi_str_mv 10.18632/oncotarget.26458
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title Phosphorylated Akt1 expression is associated with poor prognosis in cutaneous, oral and sinonasal melanomas
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