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Oncol Lett. 2013 Mar;5(3):735-738. Epub 2013 Jan 10.

PAX8 is a novel marker for differentiating between various types of tumor, particularly ovarian epithelial carcinomas.

Author information

1
Department of Obstetrics and Gynecology, Qilu Hospital, Shandong University, Jinan 250012, P.R. China.

Abstract

Paired-box gene 8 (PAX8) encodes a transcription factor associated with important roles in embryogenesis and disease, and is a member of the PAX gene family. PAX8 has been demonstrated to be crucial in determining cell fate during the development of the thyroid, kidney, brain, eyes and Müllerian system and regulates expression of the Wilms' tumor suppressor gene (WT1). Several previous studies have reported that PAX8 is expressed at high levels in specific types of tumor, including thyroid and renal carcinomas and pancreatic neuroendocrine tumors. In addition, PAX8 has been reported to be useful for the detection and differential diagnosis of ovarian carcinoma. The consistency of PAX8 staining in epithelial ovarian carcinomas (EOCs) and the fallopian tube has provided morphological evidence that EOC may originate from the fallopian tube. The molecular mechanism of PAX8 in the carcinogenesis of these tumors remains unclear and requires further studies.

KEYWORDS:

PAX8; ovarian epithelial carcinoma; tumor marker

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