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Article

Comparison of immunohistochemistry, four in situ hybridization methods and quantitative polymerase chain reaction for the molecular diagnosis of HER2 status in gastric cancer: A study of 55 cases

  • Authors:
    • Libor Staněk
    • Tomáš Rozkoš
    • Jan Laco
    • Aleš Ryška
    • Luboš  Petruželka
    • Miroslav Důra
    • Pavel Dundr
  • View Affiliations / Copyright

    Affiliations: Department of Pathology, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, CZ-128 00 Prague 2, Czech Republic, The Fingerland Department of Pathology, Faculty of Medicine, Charles University in Prague and University Hospital in Hradec Kralove, CZ-500 05 Hradec Králové, Czech Republic, Department of Oncology, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, CZ-128 00 Prague 2, Czech Republic, First Faculty of Medicine, Charles University in Prague, CZ-128 00 Prague 2, Czech Republic
  • Pages: 2669-2674
    |
    Published online on: September 2, 2014
       https://doi.org/10.3892/mmr.2014.2530
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Abstract

In the current study, the sensitivity and specificity of methods of HER2 status detection were studied in 55 patients presenting with gastric/gastroesophageal junction carcinoma (30 intestinal and 25 diffuse), in small biopsy (endoscopy; n=33) and resection specimens (n=22). The primary objective of the present study was to compare various methods for the assessment of HER2 status, with regards to the sensitivity and specificity of each method, as well as their concordance. In all cases, the status of HER2 was determined using immunohistochemistry (IHC), fluorescence in situ hybridization (FISH), silver in situ hybridization (SISH), and quantitative polymerase chain reaction (qPCR). The concordance rate between IHC and ISH was 100% for IHC 0 and 3+. The concordance rate for IHC 1+ was 100% between IHC and SISH, and 92.9% between IHC and FISH. The concordance rate among different FISH methods was 100%, between FISH and SISH it was 96.2%, and between qPCR and ISH methods it was 88.5%. Thus, the results demonstrate that different in situ hybridization methods are comparable and that none were superior. Furthermore, the IHC and FISH methods were found to be comparable and the concordance rate was particularly good. qPCR analysis correlated well with the other methods and appears to be a possible alternative tool for detection of the HER2 status. However, the concordance rate of qPCR with other methods was identified to be lower in the diffuse carcinoma group of endoscopy biopsy specimens; therefore investigation of further cases is required.
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Copy and paste a formatted citation
Spandidos Publications style
Staněk L, Rozkoš T, Laco J, Ryška A, Petruželka L, Důra M and Dundr P: Comparison of immunohistochemistry, four in situ hybridization methods and quantitative polymerase chain reaction for the molecular diagnosis of HER2 status in gastric cancer: A study of 55 cases. Mol Med Rep 10: 2669-2674, 2014.
APA
Staněk, L., Rozkoš, T., Laco, J., Ryška, A., Petruželka, L., Důra, M., & Dundr, P. (2014). Comparison of immunohistochemistry, four in situ hybridization methods and quantitative polymerase chain reaction for the molecular diagnosis of HER2 status in gastric cancer: A study of 55 cases. Molecular Medicine Reports, 10, 2669-2674. https://doi.org/10.3892/mmr.2014.2530
MLA
Staněk, L., Rozkoš, T., Laco, J., Ryška, A., Petruželka, L., Důra, M., Dundr, P."Comparison of immunohistochemistry, four in situ hybridization methods and quantitative polymerase chain reaction for the molecular diagnosis of HER2 status in gastric cancer: A study of 55 cases". Molecular Medicine Reports 10.5 (2014): 2669-2674.
Chicago
Staněk, L., Rozkoš, T., Laco, J., Ryška, A., Petruželka, L., Důra, M., Dundr, P."Comparison of immunohistochemistry, four in situ hybridization methods and quantitative polymerase chain reaction for the molecular diagnosis of HER2 status in gastric cancer: A study of 55 cases". Molecular Medicine Reports 10, no. 5 (2014): 2669-2674. https://doi.org/10.3892/mmr.2014.2530
Copy and paste a formatted citation
x
Spandidos Publications style
Staněk L, Rozkoš T, Laco J, Ryška A, Petruželka L, Důra M and Dundr P: Comparison of immunohistochemistry, four in situ hybridization methods and quantitative polymerase chain reaction for the molecular diagnosis of HER2 status in gastric cancer: A study of 55 cases. Mol Med Rep 10: 2669-2674, 2014.
APA
Staněk, L., Rozkoš, T., Laco, J., Ryška, A., Petruželka, L., Důra, M., & Dundr, P. (2014). Comparison of immunohistochemistry, four in situ hybridization methods and quantitative polymerase chain reaction for the molecular diagnosis of HER2 status in gastric cancer: A study of 55 cases. Molecular Medicine Reports, 10, 2669-2674. https://doi.org/10.3892/mmr.2014.2530
MLA
Staněk, L., Rozkoš, T., Laco, J., Ryška, A., Petruželka, L., Důra, M., Dundr, P."Comparison of immunohistochemistry, four in situ hybridization methods and quantitative polymerase chain reaction for the molecular diagnosis of HER2 status in gastric cancer: A study of 55 cases". Molecular Medicine Reports 10.5 (2014): 2669-2674.
Chicago
Staněk, L., Rozkoš, T., Laco, J., Ryška, A., Petruželka, L., Důra, M., Dundr, P."Comparison of immunohistochemistry, four in situ hybridization methods and quantitative polymerase chain reaction for the molecular diagnosis of HER2 status in gastric cancer: A study of 55 cases". Molecular Medicine Reports 10, no. 5 (2014): 2669-2674. https://doi.org/10.3892/mmr.2014.2530
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