PMID- 16334021 OWN - NLM STAT- MEDLINE DCOM- 20060112 LR - 20191210 IS - 0001-5547 (Print) IS - 0001-5547 (Linking) VI - 49 IP - 5 DP - 2005 Sep-Oct TI - Fluorescence in situ hybridization for HER-2/neu amplification of breast carcinoma in archival fine needle aspiration biopsy specimens. PG - 471-6 AB - OBJECTIVE: To assess the usefulness of fluorescence in situ hybridization (FISH) for HER-2/neu amplification of breast carcinoma in archival fine needle aspiration biopsy (FNAB) specimens. STUDY DESIGN: All FISH performed on formalin-fixed, paraffin-embedded surgical specimens during January 2003-August 2003 at the University of California Irvine Medical Center were selected. Prior FNABs were retrieved. One cytologic slide was destained in each case. The results were compared with those obtained on histologic specimens using the paired t test. RESULTS: FISH was performed on 41 surgical specimens of breast carcinoma. Thirteen patients had prior FNABs that were positive for adenocarcinoma. After hybridization on destained fine needle aspiration slides, no cells were found in 2 cases, and the results were not readable in 2 cases. In the remaining 9 cases, the results, expressed as the ratio of copies of the HER-2/neu gene to copies of the chromosome 17 centromere, were 5.10, 1.14, 1.21, 1.12, 0.74, 1.11, 1.21, 9.87 and 2.4. Results on the corresponding histologic specimens were 5.25, 1.05, 1.13, 1.22, 1.13, 1.12, 1.21, 9.35 and 2.61, respectively. No significant difference was found (p = 0.23). CONCLUSION: HER-2/neu amplification status by FISH can be accurately and reliably evaluated in existing archival cytologic slides. FAU - Gu, Mai AU - Gu M AD - Department of Pathology, University of California Irvine Medical Center, Orange, California 92868, USA. mgu@uci.edu FAU - Ghafari, Sophie AU - Ghafari S FAU - Zhao, Manxu AU - Zhao M LA - eng PT - Comparative Study PT - Evaluation Study PT - Journal Article PL - Switzerland TA - Acta Cytol JT - Acta cytologica JID - 0370307 RN - 0 (Antibodies, Monoclonal) RN - 0 (Antibodies, Monoclonal, Humanized) RN - 0 (Antineoplastic Agents) RN - EC 2.7.10.1 (Receptor, ErbB-2) RN - P188ANX8CK (Trastuzumab) SB - IM MH - Antibodies, Monoclonal/therapeutic use MH - Antibodies, Monoclonal, Humanized MH - Antineoplastic Agents/therapeutic use MH - Archives MH - Biopsy, Fine-Needle MH - Breast Neoplasms/*diagnosis/genetics/metabolism MH - Carcinoma/*diagnosis/genetics/metabolism MH - Chromosomes, Human, Pair 17/genetics MH - Female MH - Gene Amplification/*genetics MH - Gene Dosage/genetics MH - Gene Expression Regulation, Neoplastic/genetics MH - Genes, erbB-2/*genetics MH - Humans MH - Immunohistochemistry/methods/trends MH - In Situ Hybridization, Fluorescence/*methods MH - Predictive Value of Tests MH - Prognosis MH - Receptor, ErbB-2/*genetics MH - Reproducibility of Results MH - Retrospective Studies MH - Trastuzumab EDAT- 2005/12/13 09:00 MHDA- 2006/01/13 09:00 CRDT- 2005/12/13 09:00 PHST- 2005/12/13 09:00 [pubmed] PHST- 2006/01/13 09:00 [medline] PHST- 2005/12/13 09:00 [entrez] AID - 10.1159/000326190 [doi] PST - ppublish SO - Acta Cytol. 2005 Sep-Oct;49(5):471-6. doi: 10.1159/000326190.