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Published in: Breast Cancer 6/2015

01-11-2015 | Original Article

A meta-analysis on concordance between immunohistochemistry (IHC) and fluorescence in situ hybridization (FISH) to detect HER2 gene overexpression in breast cancer

Authors: Fatemeh Bahreini, Ali Reza Soltanian, Parvin Mehdipour

Published in: Breast Cancer | Issue 6/2015

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Abstract

Background

We performed this meta-analysis study to evaluate the concordance and discordance between immunohistochemistry (IHC) and fluorescence in situ hybridization (FISH) in detecting HER2 alteration in human breast cancer.

Methods

As a meta-analysis, the present study evaluated the available data from previous studies on the HER2 gene detected by IHC and FISH. To indicate the meta-analysis results, a forest plot was used.

Results

We identified 172 citations, for which our inclusion criteria were met by 18 articles, representing 6629 cases. The overall concordance and discordance rate between IHC staining with score 0/1+ and FISH for detection failure of HER2 expression was 96 and 4 %, respectively. The present study showed that the overall proportion of FISH positive and negative rate for IHC score 2+ for detection of HER2 expression was 36 and 64 %, respectively; and 91 and 9 % for 3+ IHC scores.

Conclusion

The results of this study show that IHC score 0/1+ and 3+ cannot be completely considered as negative and positive breast cancer test, respectively. Therefore, we suggest a valid and complementary test, the same as FISH, to explore HER2 expression.
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Metadata
Title
A meta-analysis on concordance between immunohistochemistry (IHC) and fluorescence in situ hybridization (FISH) to detect HER2 gene overexpression in breast cancer
Authors
Fatemeh Bahreini
Ali Reza Soltanian
Parvin Mehdipour
Publication date
01-11-2015
Publisher
Springer Japan
Published in
Breast Cancer / Issue 6/2015
Print ISSN: 1340-6868
Electronic ISSN: 1880-4233
DOI
https://doi.org/10.1007/s12282-014-0528-0

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