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- W2580839315 abstract "The present study aimed to ascertain the significance of topoisomerase II α (TOP2A) and minichromosome maintenance protein (MCM) 2 expression in anal carcinoma. A total of 75 anal lesions were retrieved from the files of the Department of Pathology of Barretos Cancer Hospital (Barretos, Brazil) in order to verify the human papillomavirus (HPV) statuses of these lesions and characterize the immunohistochemical expression levels of TOP2A and MCM2 in anal carcinoma, as these are important markers for cervical HPV‑induced lesions; their expression was also compared with respect to p16 and Ki‑67. The vast majority of the cases tested positive for HPV16 (84%); 1 case tested positive for both HPV16 and HPV18. Positive HPV16 status was more frequent in early stages than in advanced stages (P=0.008). Positive immunohistochemical reactivity for MCM2 and TOP2A protein was observed in 71.6 and 100% of cases, respectively. Positive reactivity for p16 was significantly associated (P=0.001) with histological grade, and was more commonly expressed in squamous cell carcinoma than adenocarcinomas. HPV16 was strongly associated with positive p16 protein expression (76.6%). However, the high expression of Ki‑67 combined with the high expression of p16 was predominantly observed in Stage III‑IV cases. MCM2, TOP2A, p16 and Ki‑67 exhibited intense positive staining in the anal lesions, indicating that these markers were significantly and constantly expressed in anal carcinoma." @default.
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- W2580839315 date "2017-01-25" @default.
- W2580839315 modified "2023-10-06" @default.
- W2580839315 title "Characterization of topoisomerase II α and minichromosome maintenance protein 2 expression in anal carcinoma" @default.
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- W2580839315 doi "https://doi.org/10.3892/ol.2017.5650" @default.
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