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A rare case of duct carcinoma of breast showed strong cytoplasmic immunoreactivity in a fraction of cells. Moderate cytoplasmic and extracellular positivity was observed in a few prostate cancers and occasional hepatocellular carcinomas. Remaining cancer tissues were negative.
Gliomas showed moderate to strong cytoplasmic and/or nuclear staining. Several cases of melanomas, skin and urothelial cancers displayed weak to moderate nuclear staining while liver cancers exhibited cytoplasmic immunoreactivity. Remaining cancer tissues were negative.
The protein encoded by this gene binds arginine-vasopressin and may be involved in the arginine-vasopressin-mediated regulation of renal salt-water balance. The encoded protein also mediates inflammatory responses in the colon to allow recovery from intestinal epithelial damage and protects against tumorigenesis and the development of colitis. Finally, this protein can increase activation of NF-kappa-B, activation of CASP1 through interaction with ASC, and cAMP accumulation. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Feb 2013]