Κυριακή 29 Αυγούστου 2021

Expression of the cancer stem cell marker OCT4 is associated with worse prognosis and survival in cutaneous melanoma

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Cutaneous melanoma has an aggressive clinical presentation, showing rapid rate of growth and metastatic dissemination due to the permanence of cancer stem cells. The present study was to evaluate the expression of the self-renewal regulatory factor and the clinical significance of the transcription factor OCT4 in me lanoma. Melanoma tissues were stained by immunohistochemistry and the correlation between the expression of this marker was determined through clinical–pathological variables and survival outcomes. Positive expression of nuclear and cytoplasmic OCT4 was observed in 49% and 41.2% of cases, respectively. The positive expression of nuclear OCT4 in melanoma was significantly associated with prognostic factors, such as Breslow depth, Clark's level, ulceration and metastasis. Survival of patients was 56% compared to positive nuclear OCT4 expression and 94.2% when compared to the low expression of the gene. Nuclear OCT4 positive genotype indicated aggressive tumor behavior with a worse clinical outcome, which indicates OCT4 as a useful biomarker in the prognosis of melanoma. Received 10 November 2020 Accepted 1 July 2021 Correspondence to Kleber Santiago Freitas e Silva, PhD, Department of Medicine, Anápolis University Center, UniEvangélica, Avenida Universitária, Km 3,5 - Cidade Universitária, CEP 75083-515 Anápolis, Goiás, Brazil, Tel: +55 (62) 99924 5983; e-mail: smallbinho@hotmail.com Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved.
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