Dysregulation of the epidermal growth factor receptor (EGFR) is one of the
most frequently studied molecular events leading to oral carcinogenesis. Ov
erexpression of EGFR is a common event in many human solid tumors. Elevated
levels of EGFR mRNA in human cancer occur with and without gene rearrangem
ent. Structural alterations in the receptor can also result in the dysregul
ation of the EGFR pathway. EGFR overexpression without gene re-arrangement
is frequently observed in human oral cancers. However, little is known whet
her structural alterations in the receptor or perturbations in the EGFR pat
hway contribute to oral carcinogenesis. Several preliminary studies suggest
that EGFR-targeted therapeutic approaches might be successful in controlli
ng oral cancer.