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Cytoplasmic and membranous expression in a subset of inflammatory cells in several tissues.
ANTIBODY IHC RELIABILITY
Data reliability description
Antibody staining mainly consistent with RNA expression data. Secreted protein, tissue location of RNA and protein might differ and correlation is complex. External characterization data supports antibody staining.
Most malignant tissues were negative. A few cases of malignant gliomas, thyroid, skin, renal and pancreatic malignancies displayed weak to moderate cytoplasmic staining. In addition malignant melanomas showed moderate membranous and cytoplasmic staining pattern.
GENE INFORMATION
Gene name
FCAR (HGNC Symbol)
Synonyms
CD89
Description
Fc fragment of IgA receptor (HGNC Symbol)
Entrez gene summary
This gene is a member of the immunoglobulin gene superfamily and encodes a receptor for the Fc region of IgA. The receptor is a transmembrane glycoprotein present on the surface of myeloid lineage cells such as neutrophils, monocytes, macrophages, and eosinophils, where it mediates immunologic responses to pathogens. It interacts with IgA-opsonized targets and triggers several immunologic defense processes, including phagocytosis, antibody-dependent cell-mediated cytotoxicity, and stimulation of the release of inflammatory mediators. Multiple alternatively spliced transcript variants encoding different isoforms have been described for this gene. [provided by RefSeq, Jul 2008]