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CLINICAL TRIAL
JOURNAL ARTICLE
Polo-like kinase-1 immunoreactivity is associated with metastases in cutaneous melanoma.
Journal of Cutaneous Pathology 2017 October
BACKGROUND: Polo-like kinase-1 (PLK-1) is one of the key regulators of cell cycle progression. Increased expression of PLK-1 was observed in several tumor types.
METHODS: We immunohistochemically assessed PLK-1 expression in neoplastic and stromal compartments of 96 cutaneous melanomas, and analyzed associations between PLK-1 expression and clinicopathological characteristics.
RESULTS: PLK-1 expression in cancer cells was not associated with basic clinical (eg, age, gender and tumor location) or histopathological (eg, Breslow thickness, mitotic rate and ulceration) parameters. However, increased PLK-1 was more frequent in tumors with concurrent regional nodal metastases and positive sentinel lymph node biopsy status. All primary tumors associated with co-existing distant metastases exhibited high PLK-1 expression in melanoma cells. Conversely, PLK-1 expression in stromal cells was more frequent in tumors without nodal metastases. PLK-1 expression in both compartments was not associated with survival.
CONCLUSION: PLK-1 expression is associated with metastatic potential in cutaneous melanoma.
METHODS: We immunohistochemically assessed PLK-1 expression in neoplastic and stromal compartments of 96 cutaneous melanomas, and analyzed associations between PLK-1 expression and clinicopathological characteristics.
RESULTS: PLK-1 expression in cancer cells was not associated with basic clinical (eg, age, gender and tumor location) or histopathological (eg, Breslow thickness, mitotic rate and ulceration) parameters. However, increased PLK-1 was more frequent in tumors with concurrent regional nodal metastases and positive sentinel lymph node biopsy status. All primary tumors associated with co-existing distant metastases exhibited high PLK-1 expression in melanoma cells. Conversely, PLK-1 expression in stromal cells was more frequent in tumors without nodal metastases. PLK-1 expression in both compartments was not associated with survival.
CONCLUSION: PLK-1 expression is associated with metastatic potential in cutaneous melanoma.
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