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SOX2 Is the Most Sensitive Biomarker in Testicular and Gynecologic Embryonic-type Neuroectodermal Tumors (ENT) Based on a Comprehensive Evaluation of Biomarker Expression.
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Embryonic-type neuroectodermal tumor (ENT; previously referred to as primitive neuroectodermal tumor, PNET) of the testis and gynecologic tract share morphologic features with small round blue cell tumors, including Ewing sarcoma (ES), yet are biologically, therapeutically, and prognostically distinct. The diagnosis of ENT can be challenging, and it is unclear if there are reliable biomarkers that can be used to confirm this diagnosis. This study characterized 50 ENTs arising from the testis (n=38) and gynecologic tract (n=12; 7 ovary/5 uterus) with 27 biomarkers (AE1/AE3, ATRX, CD99, chromogranin-A, Cyclin D1, Fli-1, GFAP, GLUT-1, IDH1/2, INSM1, MTAP, NANOG, Nestin, neurofilament, NKX2.
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