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Prostate, colorectal, endometrial and testicular cancers as well as malignant carcinoid exhibited moderate cytoplasmic staining. A few cases of colorectal and endometrial cancers displayed strong cytoplasmic and membranous positivity. Remaining malignant cells were mainly weakly stained or negative.
GENE INFORMATION
Gene name
EPHB4 (HGNC Symbol)
Synonyms
HTK, Tyro11
Description
EPH receptor B4 (HGNC Symbol)
Entrez gene summary
Ephrin receptors and their ligands, the ephrins, mediate numerous developmental processes, particularly in the nervous system. Based on their structures and sequence relationships, ephrins are divided into the ephrin-A (EFNA) class, which are anchored to the membrane by a glycosylphosphatidylinositol linkage, and the ephrin-B (EFNB) class, which are transmembrane proteins. The Eph family of receptors are divided into 2 groups based on the similarity of their extracellular domain sequences and their affinities for binding ephrin-A and ephrin-B ligands. Ephrin receptors make up the largest subgroup of the receptor tyrosine kinase (RTK) family. The protein encoded by this gene binds to ephrin-B2 and plays an essential role in vascular development. [provided by RefSeq, Jul 2008]