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• W2000784382 abstract "ObjectiveAmeloblastic carcinoma often poses diagnostic challenges in its separation from benign ameloblastoma with atypical cytologic features or an unusual clinical course. This study aimed to determine whether SOX2 (sex determining region-Y-related high mobility group box 2), a protein expressed in the epithelial basal proliferative zone in dentigerous cysts, is a marker for ameloblastic carcinoma as well as for high-grade transformation in ameloblastic neoplasms.Study DesignImmunoperoxidase stains were performed according to a standard protocol. Immunostains were interpreted independently by 3 pathologists, and scores were recorded based on the percentage of staining and intensity of staining in the cells of interest.ResultsThe diffuse strong nuclear staining pattern has 86.4% specificity (19 of 22) to indicate the presence of high-grade features and has 76.9% sensitivity (10 of 13) in comparison with benign counterparts (P = .0021). Although previously shown as a marker for ameloblastic neoplasms, calretinin is weakly positive in a few cells in 50% (5 of 10) of ameloblastic carcinoma and 43% (3 of 7) of benign ameloblastic neoplasms, with little value in highlighting the high-grade change (P = .36).ConclusionsThe diffuse nuclear staining pattern of SOX2 is suggestive of a high-grade process in ameloblastic neoplasms. Numerous aggregates of cells harboring dense nuclear stain should raise concern for a malignancy. Ameloblastic carcinoma often poses diagnostic challenges in its separation from benign ameloblastoma with atypical cytologic features or an unusual clinical course. This study aimed to determine whether SOX2 (sex determining region-Y-related high mobility group box 2), a protein expressed in the epithelial basal proliferative zone in dentigerous cysts, is a marker for ameloblastic carcinoma as well as for high-grade transformation in ameloblastic neoplasms. Immunoperoxidase stains were performed according to a standard protocol. Immunostains were interpreted independently by 3 pathologists, and scores were recorded based on the percentage of staining and intensity of staining in the cells of interest. The diffuse strong nuclear staining pattern has 86.4% specificity (19 of 22) to indicate the presence of high-grade features and has 76.9% sensitivity (10 of 13) in comparison with benign counterparts (P = .0021). Although previously shown as a marker for ameloblastic neoplasms, calretinin is weakly positive in a few cells in 50% (5 of 10) of ameloblastic carcinoma and 43% (3 of 7) of benign ameloblastic neoplasms, with little value in highlighting the high-grade change (P = .36). The diffuse nuclear staining pattern of SOX2 is suggestive of a high-grade process in ameloblastic neoplasms. Numerous aggregates of cells harboring dense nuclear stain should raise concern for a malignancy." @default.
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• W2000784382 date "2014-05-01" @default.
• W2000784382 modified "2023-10-16" @default.
• W2000784382 title "Evaluation of SOX2 as a potential marker for ameloblastic carcinoma" @default.
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• W2000784382 doi "https://doi.org/10.1016/j.oooo.2014.01.017" @default.
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