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Hum Pathol. 2007 Jul;38(7):1074-80. Epub 2007 Apr 18.

Immunohistochemical detection of hepatocyte nuclear factor 1beta in ovarian and endometrial clear-cell adenocarcinomas and nonneoplastic endometrium.

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  • 1Department of Basic Pathology, National Defense Medical College, Tokorozawa, Saitama, Japan.


Recent studies have noted specific expression of hepatocyte nuclear factor (HNF) 1beta in ovarian clear-cell adenocarcinoma (CCA). In this study, we aimed to determine whether HNF-1beta can be a specific marker of CCA in both the ovary and the endometrium and to assess the pathological significance of HNF-1beta expression in CCAs. We examined HNF-1beta expression immunohistochemically in 186 ovarian carcinomas, including 40 CCAs; 33 endometrial carcinomas, including 5 CCAs; 22 endometria at different stages of the menstrual cycle (5 in the proliferative, 12 in the secretory, and 5 in the menstrual phases); and 7 gestational endometria. The incidence of HNF-1beta immunoreactivity differed significantly between CCAs and other histology in both the ovary (100% in the former versus 2% in the latter) and the endometrium (100% in the former versus 0% in the latter) (P < .0001 each). In nonneoplastic endometrium, 25% or more immunoreactive cells were confined to the mid-to-late secretory phase of the menstrual cycle and gestational endometrium. HNF-1beta would be an excellent marker for distinguishing CCAs from other lesions in both the ovary and the endometrium. HNF-1beta expression seems to be associated with physiopathological cytoplasmic glycogen accumulation in these organs.

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