High-level expression of Hsp90[beta] is associated with poor survival in resectable non-small-cell lung cancer patients
Aims The aim of this study was to investigate the expression of Hsp90[beta] and GRP94, and elucidate the clinical significance of their expression, in patients with resectable non-small-cell lung cancer (NSCLC). Methods and results Surgical tissue specimens were obtained from 208 patients with NSCLC...
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Published in | Histopathology Vol. 67; no. 4; p. 509 |
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Main Authors | , , , , , , , , , , , , , , , |
Format | Journal Article |
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01.10.2015
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Abstract | Aims The aim of this study was to investigate the expression of Hsp90[beta] and GRP94, and elucidate the clinical significance of their expression, in patients with resectable non-small-cell lung cancer (NSCLC). Methods and results Surgical tissue specimens were obtained from 208 patients with NSCLC who underwent surgical resection. The expression levels of Hsp90[beta] and GRP94 were assessed with tissue microarrays and immunohistochemistry. No correlations were observed between Hsp90[beta] or GRP94 expression and several clinicopathological factors. The high-Hsp90[beta] group [median overall survival (OS) 20.4 months; 95% confidence interval (CI) 0.000-40.864] showed a significant decrease in OS as compared with the low-Hsp90[beta] group (median OS not reached; P = 0.003). In contrast to the Hsp90[beta] analysis, the GRP94 analysis did not show a difference in OS. Moreover, in subgroup analyses of patients with squamous cell carcinoma histology, OS (P = 0.012) and relapse-free survival (P = 0.044) were significantly worse in the high-Hsp90[beta] group than in the low-Hsp90[beta] group. Multivariate analysis suggested that old age [hazard ratio (HR) 1.568; 95% CI 1.019-2.412; P = 0.041], advanced disease (HR 2.066; 95% CI 1.218-3.502; P = 0.007) and high Hsp90[beta] expression (HR 1.802; 95% CI 1.061-3.060; P = 0.029) were independent poor prognostic factors for OS. Conclusions Hsp90[beta] expression might be a useful marker of poor OS, although further large prospective studies are warranted to validate our findings. |
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AbstractList | Aims The aim of this study was to investigate the expression of Hsp90[beta] and GRP94, and elucidate the clinical significance of their expression, in patients with resectable non-small-cell lung cancer (NSCLC). Methods and results Surgical tissue specimens were obtained from 208 patients with NSCLC who underwent surgical resection. The expression levels of Hsp90[beta] and GRP94 were assessed with tissue microarrays and immunohistochemistry. No correlations were observed between Hsp90[beta] or GRP94 expression and several clinicopathological factors. The high-Hsp90[beta] group [median overall survival (OS) 20.4 months; 95% confidence interval (CI) 0.000-40.864] showed a significant decrease in OS as compared with the low-Hsp90[beta] group (median OS not reached; P = 0.003). In contrast to the Hsp90[beta] analysis, the GRP94 analysis did not show a difference in OS. Moreover, in subgroup analyses of patients with squamous cell carcinoma histology, OS (P = 0.012) and relapse-free survival (P = 0.044) were significantly worse in the high-Hsp90[beta] group than in the low-Hsp90[beta] group. Multivariate analysis suggested that old age [hazard ratio (HR) 1.568; 95% CI 1.019-2.412; P = 0.041], advanced disease (HR 2.066; 95% CI 1.218-3.502; P = 0.007) and high Hsp90[beta] expression (HR 1.802; 95% CI 1.061-3.060; P = 0.029) were independent poor prognostic factors for OS. Conclusions Hsp90[beta] expression might be a useful marker of poor OS, although further large prospective studies are warranted to validate our findings. |
Author | Lee, Jong Deog Kim, Seok-Hyun Ji, Jun Ho Jeong, Yi Yeong Lee, Eun Hee Lee, Jong Sil Kang, Kyung Woo Lee, Hyoun Wook Park, Kyung Tae Lee, Ji Hyun Hwang, Sang Won Cho, Yu Ji Lee, Gyeong-Won Park, Jae Hong Kim, Ho-Cheol Jang, Inseok |
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Title | High-level expression of Hsp90[beta] is associated with poor survival in resectable non-small-cell lung cancer patients |
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