Annals of Oncology 13:8-9, 2002
© 2002 European Society for Medical Oncology
Editorial |
Combined anti-EGF receptor and anti-HER2 receptor therapy in breast cancer: a promising strategy ready for clinical testing
Vall dHebron University Hospital, Barcelona, Spain
Human breast carcinomas frequently co-express the epidermal growth factor (EGF) receptor and the other three members of the EGF receptor family (HER2, -3 and -4). These receptors are composed of an extracellular binding domain, a transmembrane lipophilic segment, and an intracellular protein tyrosine kinase domain with a regulatory carboxyl terminal segment. Upon ligand binding, these receptors form homo/heterodimers and activate downstream signaling pathways involved in cell proliferation and survival such as the Ras/Raf/MAPK and the PI3-K/Akt pathways, (for review see Yarden and Sliwkowski 2001 [1]). There is strong evidence that at least two of these receptors, the EGF receptor and HER2, play a role in breast
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