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29.07.2017 | Original Article – Clinical Oncology | Ausgabe 11/2017

Journal of Cancer Research and Clinical Oncology 11/2017

Large-scale comprehensive immunohistochemical biomarker analyses in esophageal squamous cell carcinoma

Journal of Cancer Research and Clinical Oncology > Ausgabe 11/2017
Ken Hatogai, Satoshi Fujii, Takashi Kojima, Hiroyuki Daiko, Shogo Nomura, Toshihiko Doi, Shigehisa Kitano, Atsushi Ohtsu, Yuichi Takiguchi, Takayuki Yoshino, Atsushi Ochiai
Wichtige Hinweise

Electronic supplementary material

The online version of this article (doi:10.​1007/​s00432-017-2482-7) contains supplementary material, which is available to authorized users.



Esophageal squamous cell carcinoma (ESCC) is a heterogeneous disease in the sense that the biological behavior is regulated by the activation of various signaling pathways. The aim of this study was to investigate the relationships between the expressions of various targetable proteins and the clinicopathological characteristics of ESCC patients.


A total of 286 patients with ESCC who had undergone curative surgical resection without neoadjuvant therapy were enrolled in this study. The protein expressions of EGFR, HER2, MET, IGF1R, FGFR2, p53, and PD-L1 were immunohistochemically evaluated in a tissue microarray analysis. The relationships between the expression statuses of each of the above molecules, and the PD-L1 expression status as well as the clinicopathological characteristics, including the survival outcome were assessed.


The expression frequencies of EGFR, HER2, MET, IGF1R, FGFR2, p53, and PD-L1 were as follows: 90.9, 1.0, 2.4, 71.0, 16.1, 62.9 and 23.4%. The overlapping expressions of two or more receptor tyrosine kinases were observed in 72.0%. MET expression was the only poor prognostic factor of recurrence-free survival [hazard ratio (HR) 1.89, 95% confidence interval (CI) 1.15–3.11]; in contrast, PD-L1 was the only favorable prognostic factor for both recurrence-free survival (HR 0.57, 95% CI 0.38–0.87) and overall survival (HR 0.56, 95% CI 0.35–0.89). No correlation was observed between the expressions of PD-L1 and the other molecules.


This large cohort study demonstrated that multiple molecules were co-expressed in most of the ESCC cases, suggesting that combining molecular targeted agents for these co-expressed molecules should be considered.

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