4.6 Article

PReferentially Expressed Antigen in MElanoma (PRAME): preliminary communication on a translational tool able to early detect Oral Malignant Melanoma (OMM)

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JOURNAL OF CANCER
卷 14, 期 4, 页码 628-633

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IVYSPRING INT PUBL
DOI: 10.7150/jca.82389

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Oral Malignant Melanoma; Early diagnosis; Differential Diagnosis

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Oral malignant melanoma (OMM), accounting for less than 1% of all melanomas, commonly develops on the oral mucosa and often faces a diagnostic delay. This study explored the use of PRAME as a tool to investigate and differentiate OMM from other dysplastic pigmented lesions. The findings showed that PRAME could accurately differentiate Melanoma cases from other melanocytic nevi, leading to better differential diagnosis, early diagnosis, and clinical/surgical management of oncological lesions.
Oral malignant melanoma (OMM) has a prevalence less than 1% of all melanomas and it commonly develops on the oral mucosa following a slow and unspecific transformation of unstable melanocytic lesions, often resulting in a diagnostic delay. The marker PReferentially Expressed Antigen in MElanoma (PRAME) seems to be a valid tool to investigate the biological and histological nature of cutaneous melanocytic lesions, but to date its use to characterize pigmented lesions in the oral cavity is largely unexplored. The aim of this study was to create preliminary knowledge on the PRAME expression in OMM, and to compare its expression respect to other dysplastic pigmented lesions of the oral cavity. Interestingly, PRAME has been demonstrated to be reliable in the clinical conditions investigated in our pilot study; in fact, it has clearly differentiated the cases of Melanoma, which showed diffuse and intense positivity (score 6+/7+) to PRAME, from the other melanocytic nevi, which resulted to be mainly negative to PRAME. This means a better differential diagnosis, a reliable early diagnosis and a proper clinical/surgical management of the oncological lesions. In conclusion, PRAME can be a valid qualitative marker for differential diagnosis, not only in cutaneous melanomas, but also in malignant melanoma of the entire head and neck area.

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