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c-erb B2 amplification and overexpression in human tumors

1991; Springer Science+Business Media; Linguagem: Inglês

10.1007/978-1-4615-3500-3_8

2509-8497

F. Lofts, William J. Gullick,

Peptidase Inhibition and Analysis

There is no evidence for activation of c-erbB2 by mutation in human cancer. Gene rearrangements are observed at low frequency, but there are a proportion of human cancers that are associated with c-erbB2 gene amplification and membrane protein overexpression. The human cancers so affected are adenocarcinomas of the breast, ovary, stomach, and bladder, with up to 20% of primary lesions exhibiting either increased gene copy number and/or excess membrane staining. The c-erbB2 protein on these tumors could be used as a therapeutic target, as in monoclonal antibody targetted therapy already being assessed in c-erbB2 positive breast cancer. Other possible therapeutic strategies include the development of tyrosine kinase inhibitors or ligand antagonists.