Jl. Frank et al., EPIDERMAL GROWTH-FACTOR RECEPTOR EXPRESSION IN SQUAMOUS-CELL CARCINOMA OF THE HYPOPHARYNX, Surgical oncology, 2(3), 1993, pp. 161-167
Expression of the epidermal growth factor receptor (EGFR) has been dem
onstrated in normal and malignant squamous epithelia. Its presence has
been suggested to be important in the pathophysiology and prognosis o
f epithelial cancers. Archival tumour specimens from 57 patients with
squamous cell carcinoma of the hypopharynx were studied using OM-11-95
1, a new murine anti-EGFR monoclonal antibody which recognizes the rec
eptor on deparaffinized tissue. By visual inspection, 28 (49%) tumours
were EGFR negative; 29 (51%) tumours were EGFR positive. While patien
ts whose tumours were EGFR positive were younger, there was no signifi
cant correlation with other clinical or pathological variables (includ
ing grade and stage). Patients whose tumours were EGFR negative had a
median survival of 21 (95% CI 4.3-37.7) months compared with a median
survival of 17 (95% CI 11.4-22) months for patients whose tumours were
EGFR positive. The difference was not statistically significant. A mu
ltiple regression analysis did not demonstrate EGFR status to be impor
tant in predicting survival. These data cast doubt on the prognostic s
ignificance of EGFR expression in this neoplasm.