PMID- 23455187 OWN - NLM STAT- MEDLINE DCOM- 20140610 LR - 20161020 IS - 1533-4058 (Electronic) IS - 1533-4058 (Linking) VI - 21 IP - 6 DP - 2013 Dec TI - One-day FISH approach for the high-speed determination of HER2 gene copy status in breast carcinoma. PG - 567-71 LID - 10.1097/PAI.0b013e318288dcdc [doi] AB - Fluorescence in situ hybridization (FISH) is a commonly used method to detect chromosomal aberrations, for example, to assess human epidermal growth factor receptor 2 (HER2) gene status in breast carcinoma. The classical FISH approach requires overnight incubation for proper hybridization result. Tissue morphologic features are varying because of aggressive pretreatment and application of high temperatures. To eliminate some of the methodological problems, a new 1-day FISH method was recently introduced. The aim of our study was to evaluate the utility of the Instant Quality FISH with the conventional FISH kit from the same provider (Dako pharmDx) for determination of HER2 status. We performed in situ hybridization on the same 40 invasive breast carcinoma samples with both probe kits, and HER2/CEN17 and chromosome 17/cell nucleus ratios were calculated. FISH signal stability was also tested by the reassessment of the slides after 2 months storage. The accordance regarding HER2 gene amplification status between the 2 FISH kits tested was 100%. There was an excellent correlation between HER2/CEN17 ratios with a concordance correlation coefficient of 0.958 and correlation coefficient (R) of 0.959. The 1-day HER2 Instant Quality FISH diagnostic kit points with fast and stable reaction showing the same result in the diagnostic practice when compared with the conventional overnight FISH method. FAU - Hegyi, Katalin AU - Hegyi K AD - *Department of Pathology, Medical and Health Sciences Center, University of Debrecen, Debrecen, Hungary daggerDako A/S, Glostrup, Denmark. FAU - Lonborg, Charlotte AU - Lonborg C FAU - Monus, Aniko AU - Monus A FAU - Mehes, Gabor AU - Mehes G LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Appl Immunohistochem Mol Morphol JT - Applied immunohistochemistry & molecular morphology : AIMM JID - 100888796 RN - 0 (Biomarkers, Tumor) RN - 0 (Reagent Kits, Diagnostic) RN - EC 2.7.10.1 (ERBB2 protein, human) RN - EC 2.7.10.1 (Receptor, ErbB-2) SB - IM MH - Biomarkers, Tumor/*genetics MH - Breast Neoplasms/*diagnosis/genetics/pathology MH - Carcinoma, Ductal, Breast/*diagnosis/genetics/pathology MH - Centromere/chemistry MH - Chromosomes, Human, Pair 17 MH - Female MH - Humans MH - In Situ Hybridization, Fluorescence/*methods MH - Reagent Kits, Diagnostic MH - Receptor, ErbB-2/*genetics MH - Time Factors EDAT- 2013/03/05 06:00 MHDA- 2014/06/11 06:00 CRDT- 2013/03/05 06:00 PHST- 2013/03/05 06:00 [entrez] PHST- 2013/03/05 06:00 [pubmed] PHST- 2014/06/11 06:00 [medline] AID - 10.1097/PAI.0b013e318288dcdc [doi] PST - ppublish SO - Appl Immunohistochem Mol Morphol. 2013 Dec;21(6):567-71. doi: 10.1097/PAI.0b013e318288dcdc.