Literature DB >> 25125621

Evaluation of napsin A, TTF-1, p63, p40, and CK5/6 immunohistochemical stains in pulmonary neuroendocrine tumors.

Chen Zhang1, Lindsay A Schmidt2, Kazuhito Hatanaka3, Dafydd Thomas2, Amir Lagstein2, Jeffrey L Myers2.   

Abstract

OBJECTIVE: A panel of immunohistochemical (IHC) stains frequently used to subclassify non-small cell lung cancers (NSCLCs) includes napsin A, TTF-1, CK5/6, p40, and p63. The expression profiles of these stains in neuroendocrine tumors have not been systematically evaluated.
METHOD: Sixty-eight resected pulmonary neuroendocrine tumors, including 52 typical carcinoids (TCs), eight atypical carcinoids (ACs), seven small cell carcinomas (SCLCs) and one large cell neuroendocrine carcinoma (LCNEC), were stained for napsin A, TTF-1, p63, p40, and CK5/6. Tumors were scored as positive (>1% tumor cells reactive) or negative, and percentage of reactive tumor cells was recorded.
RESULTS: Napsin A, p63, p40, and CK5/6 were consistently negative in neuroendocrine tumors. TTF-1 was positive in 17 of 52 TCs, 4 of 8 ACs, 5 of 7 SCLCs, and 0 of 1 LCNECs.
CONCLUSION: Pulmonary neuroendocrine tumors have a distinct but nonspecific profile on IHC panel commonly applied to subclassify NSCLCs. They are napsin A-/p40-/p63-/CK5/6-/TTF-1±. Recognizing this profile may have value in separating neuroendocrine tumors from NSCLCs. Copyright© by the American Society for Clinical Pathology.

Entities:  

Keywords:  Carcinoid; Immunohistochemistry; Napsin A; Pulmonary neuroendocrine tumor

Mesh：

Substances：

Year:  2014        PMID： 25125621     DOI： 10.1309/AJCPGA0IUA8BHQEZ

Source DB:  PubMed          Journal:  Am J Clin Pathol        ISSN： 0002-9173            Impact factor:   2.493


  18 in total

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10.  Pulmonary large cell neuroendocrine carcinoma with adenocarcinoma-like features: napsin A expression and genomic alterations.

Authors:  Natasha Rekhtman; Catherine M Pietanza; Joshua Sabari; Joseph Montecalvo; Hangjun Wang; Omar Habeeb; Kyuichi Kadota; Prasad Adusumilli; Charles M Rudin; Marc Ladanyi; William D Travis; Philippe Joubert
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