Background: Survivin is a member of the inhibitor of apoptosis family of proteins implicated in the inhibition of apoptosis and cell cycle control, both crucial in the progression to malignancy. Survivin overexpression has been demonstrated in numerous malignancies including cutaneous squamous cell carcinoma and melanoma. To date, there are no studies evaluating the expression of survivin in sebaceous neoplasms.
Methods: Immunohistochemical expression of survivin was evaluated in a total of 20 extraocular sebaceous neoplasms: sebaceous hyperplasia (SH, 8), sebaceous adenoma (SA, 8), and sebaceous carcinoma (SC, 4). All the results were independently evaluated by a single dermatopathologist.
Results: Nuclear expression of survivin was present in 1.4% of lesional SH cells, 8.2% of SA cells, and 12.5% of SC cells. A significant difference in survivin expression with the Student t test was noted between SH and SA (P=0.01), SA and SC (P=0.05), and SH and SC (P=0.001).
Conclusions: There is a statistically significant difference in survivin expression among SH, SA, and SC. These findings demonstrate the potential diagnostic utility of survivin, further assisting in the microscopic differentiation of benign and malignant sebaceous neoplasms. However, larger studies are needed to determine the significance of survivin expression as it relates to recurrence, metastatic potential, and outcome.
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