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  • Title: Expression of epidermal growth factor receptors in four histologic cell types of lung cancer.
    Author: Kaseda S, Ueda M, Ozawa S, Ishihara T, Abe O, Shimizu N.
    Journal: J Surg Oncol; 1989 Sep; 42(1):16-20. PubMed ID: 2549305.
    Abstract:
    Lung cancer tissues from 68 patients were examined for epidermal growth factor (EGF) receptor levels and EGF receptor gene copy numbers. Histologic cell types of these lung cancer tissues included squamous-cell carcinoma (n = 30), adenocarcinoma (n = 28), large-cell carcinoma (n = 4), and small-cell carcinoma (n = 6). Tissues of squamous-cell carcinoma exhibited exceptionally high 125I-EGF binding activity, and those of small-cell carcinoma showed no EGF binding activity. Southern blot hybridization analysis revealed EGF receptor gene amplification in the squamous-cell carcinomas with high EGF binding activity. The EGF receptor levels in squamous-cell carcinomas and adenocarcinomas were compared with their pathological staging grouping and pathological findings, including degree of differentiation, diameter of tumor, and lymph node metastasis. However, unlike previous reports on breast and bladder cancers, there was no obvious correlation between these pathological characteristics and the EGF receptor levels of lung cancer.
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