Journal
MODERN PATHOLOGY
Volume 19, Issue 4, Pages 607-610Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/modpathol.3800575
Keywords
ovarian cancer; epidermal growth factor receptor; tissue microarray; fluorescence in situ hybridization; amplification; mutation
Categories
Ask authors/readers for more resources
Success of epidermal growth factor receptor (EGFR) targeting agents in different cancer types is related to EGFR gene mutations and/or copy number gains. We investigated the EGFR gene status and protein expression by DNA mutational analysis, fluorescence in situ hybridization (FISH), and immunohistochemistry in tumor tissues from 80 patients with primary and corresponding recurrent ovarian serous carcinomas. The patients were classified into six groups with ascending EGFR gene copy numbers. EGFR amplification and high polysomy (FISH+) was present in a significant fraction of the primary (20%) and recurrent (22%) ovarian carcinomas. On mutational analysis, only one tumor with a silent EGFR mutation was observed, and this was the only carcinoma with high-level amplification. EGFR protein immunoexpression was seen in 28% of primary and 33% of recurrent carcinomas and correlated to amplification in the primary tumors (P=0.003). In recurrent carcinoma, moderate and strong EGFR expression was associated with amplification (P=0.034). These molecular events potentially have impact on the responsiveness to EGFR targeting agents in ovarian cancer.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available