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Published in: Clinical & Experimental Metastasis 7/2018

01-10-2018 | Research Paper

Clinicopathological and immunohistochemical analysis of autoimmune regulator expression in patients with osteosarcoma

Authors: Kotaro Matsuda, Hiroaki Miyoshi, Mayuko Moritsubo, Koji Hiraoka, Tetsuya Hamada, Naoto Shiba, Koichi Ohshima

Published in: Clinical & Experimental Metastasis | Issue 7/2018

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Abstract

Autoimmune regulator (AIRE) is a transcription factor that is expressed in medullary thymic epithelial cells. It plays an essential role in central tolerance by eliminating self-reactive T cells. Recently, extrathymic AIRE-expressing cells have been revealed, which are associated with peripheral tolerance. Moreover, AIRE expression has been demonstrated in skin tumors and breast cancer. However, the expression of AIRE in osteosarcoma is unknown. We used immunohistochemistry to investigate AIRE expression in biopsy samples from 43 patients with conventional osteosarcoma and statistically analyzed the association between AIRE expression and clinicopathological characteristics. High AIRE expression was detected in 25 patients (58.1%), and significantly associated with the presence of lung metastasis (P = 0.014) and an increased number of forkhead box P3-positive tumor-infiltrating lymphocytes (regulatory T cells) (P = 0.014). The overall survival rate for all osteosarcoma patients with high AIRE expression was significantly shorter than that for those with low AIRE expression (P = 0.046). In a subgroup analysis of American Joint Committee on Cancer stage II patients who underwent complete surgical resection and conventional chemotherapy, the overall survival and metastasis-free survival rates were significantly shorter for patients with high AIRE expression than for those with low AIRE expression (P = 0.019 and P < 0.01, respectively). High AIRE expression was confirmed to be an independent poor prognostic factor for both overall survival (hazard ratio: 3.841, P = 0.038) and metastasis-free survival (hazard ratio: 4.348, P = 0.022) in the multivariate analysis. The evaluation of AIRE expression may be useful for stratifying osteosarcoma patients for more effective clinical follow-up.
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Metadata
Title
Clinicopathological and immunohistochemical analysis of autoimmune regulator expression in patients with osteosarcoma
Authors
Kotaro Matsuda
Hiroaki Miyoshi
Mayuko Moritsubo
Koji Hiraoka
Tetsuya Hamada
Naoto Shiba
Koichi Ohshima
Publication date
01-10-2018
Publisher
Springer Netherlands
Published in
Clinical & Experimental Metastasis / Issue 7/2018
Print ISSN: 0262-0898
Electronic ISSN: 1573-7276
DOI
https://doi.org/10.1007/s10585-018-9928-4

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