PMID- 20156290 OWN - NLM STAT- MEDLINE DCOM- 20100520 LR - 20181201 IS - 1600-0625 (Electronic) IS - 0906-6705 (Linking) VI - 19 IP - 2 DP - 2010 Feb TI - Epidermal growth factor receptor gene numerical aberrations are frequent events in actinic keratoses and invasive cutaneous squamous cell carcinomas. PG - 151-3 LID - 10.1111/j.1600-0625.2009.01028.x [doi] AB - Epidermal growth factor receptor (EGFR) gene amplification and protein overexpression are common in several cancers. EGFR status has seldom been studied in cutaneous squamous carcinomas (SCCs), or their precursors, actinic keratoses (AKs). We evaluated the presence of EGFR genomic aberrations and EGFR protein overexpression in 25 AKs and 35 invasive SCCs by means of fluorescence in situ hybridization (FISH) and immunohistochemistry. EGFR numerical aberrations were detected in 52% of AKs and 77.1% of SCCs (P = 0.042). EGFR amplification was identified in 12% of AKs and 20% of SCCs. No differences regarding EGFR numerical aberrations were observed when AKs with high-grade dysplasia were compared with SCCs. A good correlation was observed between EGFR numerical aberrations and EGFR overexpression. Our results suggest that EGFR numerical aberrations occur in the early stages of epithelial carcinogenesis in skin, not playing a role in the progression from low-grade SCCs into more aggressive phenotypes. FAU - Toll, Agusti AU - Toll A FAU - Salgado, Rocio AU - Salgado R FAU - Yebenes, Mireia AU - Yebenes M FAU - Martin-Ezquerra, Gemma AU - Martin-Ezquerra G FAU - Gilaberte, Montserrat AU - Gilaberte M FAU - Baro, Teresa AU - Baro T FAU - Sole, Francesc AU - Sole F FAU - Alameda, Francisco AU - Alameda F FAU - Espinet, Blanca AU - Espinet B FAU - Pujol, Ramon Maria AU - Pujol RM LA - eng PT - Letter PT - Research Support, Non-U.S. Gov't PL - Denmark TA - Exp Dermatol JT - Experimental dermatology JID - 9301549 RN - EC 2.7.10.1 (EGFR protein, human) RN - EC 2.7.10.1 (ErbB Receptors) SB - IM MH - Carcinoma, Squamous Cell/*genetics MH - ErbB Receptors/metabolism MH - Gene Dosage MH - *Genes, erbB-1 MH - Humans MH - Immunohistochemistry MH - Keratosis, Actinic/*genetics MH - Skin Neoplasms/*genetics EDAT- 2010/02/17 06:00 MHDA- 2010/05/21 06:00 CRDT- 2010/02/17 06:00 PHST- 2010/02/17 06:00 [entrez] PHST- 2010/02/17 06:00 [pubmed] PHST- 2010/05/21 06:00 [medline] AID - EXD1028 [pii] AID - 10.1111/j.1600-0625.2009.01028.x [doi] PST - ppublish SO - Exp Dermatol. 2010 Feb;19(2):151-3. doi: 10.1111/j.1600-0625.2009.01028.x.