Hypoxia-related protein expression and its clinicopathologic implication in carcinoma of unknown primary

Ja Seung Koo, Haeryoung Kim

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Carcinoma of unknown primary (CUP) is a heterogeneous entity with different clinical and histological features. The aim of this study was to investigate the clinicopathological features and expression of proteins associated with carcinogenesis and tumor environment in different histological subtypes of CUP. Sixty-nine cases of CUP were subjected to immunohistochemistry for EGFR, phospho-EGFR, HER-2, phospho-HER-2, p53, ERCC1, RRM1, REDD1, HIF1α, COX-2, GLUT-1, 14-3-3σ, Phospho-mTOR, Phospho-S6, AMPKα1, Phospho-Akt, PDGF-β receptor, and caveolin-1, and fluorescence in situ hybridization for HER-2 gene amplification. Fourteen (20.3%) cases were poorly differentiated carcinoma, 24 (34.8%) were adenocarcinoma (AD), 17 (24.6%) were squamous cell carcinoma (SC), and 14 (20.3%) were undifferentiated carcinoma (UD). AD were mostly carcinomatosis type, while SC and UD were mostly nodal type (p < 0.001). SC showed more frequent EGFR overexpression (p < 0.001) and Glut-1 (p = 0.001). AD (p = 0.001) and carcinomatosis (p < 0.001) types showed shorter overall survival. SCs expressing Glut-1, HIF1α, and COX2 showed a poor prognosis (p = 0.048, 0.029, and 0.042, respectively). CUP shows various clinicopathological features according to the histological subtypes. SC is mainly associated with nodal metastasis in the head and neck, and frequent EGFR overexpression and Glut-1 expression. Glut-1, HIF1α, and COX2 expression in SC is associated with a poor prognosis.

Original languageEnglish
Pages (from-to)893-904
Number of pages12
JournalTumor Biology
Volume32
Issue number5
DOIs
Publication statusPublished - 2011 Oct 1

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Carcinoma
Squamous Cell Carcinoma
Proteins
Adenocarcinoma
erbB-2 Genes
Caveolin 1
Hypoxia
S 6
Platelet-Derived Growth Factor Receptors
Gene Amplification
Fluorescence In Situ Hybridization
Carcinogenesis
Neck
Immunohistochemistry
Head
Neoplasm Metastasis
Neoplasms

All Science Journal Classification (ASJC) codes

  • Cancer Research

Cite this

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abstract = "Carcinoma of unknown primary (CUP) is a heterogeneous entity with different clinical and histological features. The aim of this study was to investigate the clinicopathological features and expression of proteins associated with carcinogenesis and tumor environment in different histological subtypes of CUP. Sixty-nine cases of CUP were subjected to immunohistochemistry for EGFR, phospho-EGFR, HER-2, phospho-HER-2, p53, ERCC1, RRM1, REDD1, HIF1α, COX-2, GLUT-1, 14-3-3σ, Phospho-mTOR, Phospho-S6, AMPKα1, Phospho-Akt, PDGF-β receptor, and caveolin-1, and fluorescence in situ hybridization for HER-2 gene amplification. Fourteen (20.3{\%}) cases were poorly differentiated carcinoma, 24 (34.8{\%}) were adenocarcinoma (AD), 17 (24.6{\%}) were squamous cell carcinoma (SC), and 14 (20.3{\%}) were undifferentiated carcinoma (UD). AD were mostly carcinomatosis type, while SC and UD were mostly nodal type (p < 0.001). SC showed more frequent EGFR overexpression (p < 0.001) and Glut-1 (p = 0.001). AD (p = 0.001) and carcinomatosis (p < 0.001) types showed shorter overall survival. SCs expressing Glut-1, HIF1α, and COX2 showed a poor prognosis (p = 0.048, 0.029, and 0.042, respectively). CUP shows various clinicopathological features according to the histological subtypes. SC is mainly associated with nodal metastasis in the head and neck, and frequent EGFR overexpression and Glut-1 expression. Glut-1, HIF1α, and COX2 expression in SC is associated with a poor prognosis.",
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Hypoxia-related protein expression and its clinicopathologic implication in carcinoma of unknown primary. / Koo, Ja Seung; Kim, Haeryoung.

In: Tumor Biology, Vol. 32, No. 5, 01.10.2011, p. 893-904.

Research output: Contribution to journalArticle

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