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A single case of liver cancer showed weak nuclear positivity. Remaining cancers were negative.
GENE INFORMATION
Gene name
CYBB (HGNC Symbol)
Synonyms
CGD, GP91-PHOX, NOX2
Description
Cytochrome b-245, beta polypeptide (HGNC Symbol)
Entrez gene summary
Cytochrome b (-245) is composed of cytochrome b alpha (CYBA) and beta (CYBB) chain. It has been proposed as a primary component of the microbicidal oxidase system of phagocytes. CYBB deficiency is one of five described biochemical defects associated with chronic granulomatous disease (CGD). In this disorder, there is decreased activity of phagocyte NADPH oxidase; neutrophils are able to phagocytize bacteria but cannot kill them in the phagocytic vacuoles. The cause of the killing defect is an inability to increase the cell's respiration and consequent failure to deliver activated oxygen into the phagocytic vacuole. [provided by RefSeq, Jul 2008]