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Cited by 277

The DOI matches its Crossref record; 19 of the 19 references it cites were found in a registry or an index.

Screening of Anaplastic Lymphoma Kinase Rearrangement by Immunohistochemistry in Non-small Cell Lung Cancer: Correlation with Fluorescence In Situ Hybridization

Open access
Paik, Jin Ho, Choe, Gheeyoung, Kim, Hyojin, Choe, Ji-Young, Lee, Hyun Ju, Lee, Choon-Taek, Lee, Jong Seok, Jheon, Sanghoon, Chung, Jin-Haeng·2011·Journal of Thoracic Oncology

Abstract

Background: The use of a standard immunohistochemistry (IHC) assay to detect the anaplastic lymphoma kinase (ALK) protein in lung cancer is challenging. There are no universally accepted, evidence-based guidelines on identifying patients with ALK-rearranged lung cancer using IHC. Methods: We retrospectively reviewed 465 resected specimens of non-small cell lung cancer using a tissue microarray as a test set. ALK protein expression using IHC with 5A4 monoclonal antibody (Novocastra) and ALK gene rearrangement using fluorescence in situ hybridization (FISH) with dual-color break-apart probes (Abbott molecular) were examined. Immunoreactivity was scored as 0, 1, 2, or 3, and the results were compared with the FISH results. A diagnostic algorithm was derived from the correlation of the IHC and FISH results and applied to an additional 187 adenocarcinoma samples used as a validation set. Results: In the test set, ALK protein expression was detected in 40 patients (40/465, 8.6%), consisting of IHC scores of 1 (n = 14), 2 (n = 10), and 3 (n = 16), whereas 19 patients (19/453, 4.2%) were FISH-positive. All the FISH-positive patients were assigned IHC scores of 2 or 3. All the patients with ALK IHC scores of 3 were FISH-positive, those with scores of 0 or 1 were FISH-negative, and those with scores of 2 were FISH variable. In the validation set, ALK protein expression was detected in 14 patients (scores of 1, n = 2; scores of 2, n = 6; and scores of 3, n = 6), of which nine patients (9/187, 4.8%) were FISH-positive. All the patients with IHC scores of 0 or 1 were FISH-negative, and those with scores of 3 were FISH- positive. Among the patients with IHC scores of 2, three (3/6, 50%) were FISH-positive. Conclusions: The sensitivity and specificity of IHC was 100% and 95.8%, respectively. These data supported an IHC scoring algorithm in which ALK IHC scores of 0, 1, or 3 were highly compatible with FISH results, and IHC scores of 2 were variable. Based on these findings, the IHC assay using the 5A4 antibody reliably detected non-small cell lung cancer with ALK rearrangement and may be useful as a screening method to identify these tumors.

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Metadata

Authors
Paik, J. H., Choe, G., Kim, H., Choe, J.-Y., Lee, H. J., Lee, C.-T., Lee, J. S., Jheon, S., & Chung, J.-H.
Venue
Journal of Thoracic Oncology
Publisher
Elsevier BV
Published
2011-03
Volume
6
Issue
3
Pages
466-472
ISSN
1556-0864 (ISSN-L)
OpenAlex
W2010561682
Cited by
277
References
19
FWCI
38.85
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Screening of Anaplastic Lymphoma Kinase Rearrangement by Immunohistochemistry in Non-small Cell Lung Cancer: Correlation with Fluorescence In Situ Hybridization. https://app.cochat.ai/papers/10.1097/jto.0b013e31820b82e8
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Paik, J. H., Choe, G., Kim, H., Choe, J.-Y., Lee, H. J., Lee, C.-T., Lee, J. S., Jheon, S., & Chung, J.-H. (2011). Screening of Anaplastic Lymphoma Kinase Rearrangement by Immunohistochemistry in Non-small Cell Lung Cancer: Correlation with Fluorescence In Situ Hybridization. Journal of Thoracic Oncology. https://doi.org/10.1097/jto.0b013e31820b82e8

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