PMID- 19331129 OWN - NLM STAT- MEDLINE DCOM- 20090416 LR - 20211122 IS - 0250-7005 (Print) IS - 0250-7005 (Linking) VI - 29 IP - 1 DP - 2009 Jan TI - Gene amplification of Myc and its coamplification with ERBB2 and EGFR in gallbladder adenocarcinoma. PG - 19-26 AB - BACKGROUND: Among the combinations of coamplified genes, Myc and ERBB2 or EGFR have attracted much attention for their relevance to cytogenetics, carcinogenesis and cancer therapy. MATERIALS AND METHODS: Gene amplification of Myc, ERBB2 and EGFR were examined on 97 formalin-fixed and paraffin-embedded gallbladder carcinomas, by fluorescence in situ hybridization (FISH). RESULTS: FISH revealed three tumors had Myc amplification. By dual color FISH, one of these three tumors had two populations of tumor cells with the coexistence of amplified Myc and ERBB2, and Myc and EGFR. The second tumor had a high level of amplification of Myc without amplification of ERBB2 or EGFR. The third tumor had a low level of coamplification of Myc and ERBB2. A case of polysomy 8 also demonstrated amplification of ERBB2 and EGFR. CONCLUSION: The present study shows that genomic instability due to Myc amplification may cause specific amplification of EGFR and/or ERBB2. FAU - Ooi, Akishi AU - Ooi A AD - Department of Molecular and Cellular Pathology, Kanazawa University Graduate School of Medical Science, Ishikawa. aooi@med.kanazawa-u.ac.jp FAU - Suzuki, Shioto AU - Suzuki S FAU - Nakazawa, Kumiko AU - Nakazawa K FAU - Itakura, Jun AU - Itakura J FAU - Imoto, Issei AU - Imoto I FAU - Nakamura, Hiroyuki AU - Nakamura H FAU - Dobashi, Yoh AU - Dobashi Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Greece TA - Anticancer Res JT - Anticancer research JID - 8102988 RN - EC 2.7.10.1 (ErbB Receptors) RN - EC 2.7.10.1 (Receptor, ErbB-2) SB - IM MH - Adenocarcinoma/enzymology/*genetics/pathology MH - Adult MH - Aged MH - Aged, 80 and over MH - ErbB Receptors/biosynthesis/*genetics MH - Female MH - Gallbladder Neoplasms/enzymology/*genetics/pathology MH - Gene Amplification MH - *Genes, myc MH - Humans MH - Immunohistochemistry MH - In Situ Hybridization, Fluorescence MH - Male MH - Middle Aged MH - Neoplasm Staging MH - Receptor, ErbB-2/biosynthesis/*genetics EDAT- 2009/04/01 09:00 MHDA- 2009/04/17 09:00 CRDT- 2009/04/01 09:00 PHST- 2009/04/01 09:00 [entrez] PHST- 2009/04/01 09:00 [pubmed] PHST- 2009/04/17 09:00 [medline] PST - ppublish SO - Anticancer Res. 2009 Jan;29(1):19-26.