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- W2892365617 abstract "Abstract Background Heat shock protein (HSP) 27 and 70 overexpression is associated with several malignancies but reports of their incidence and association with survival among patients with esophageal carcinoma (EC) are scarce. COX-2 expression is induced by inflammation, and it has been linked to a Barrett's esophagus and a wide variety of cancers. High COX-2 expression has been linked to poor survival in EC but results regarding association to clinicopathological factors are conflicting. Methods Immunohistochemical analysis for HSP27, HSP70 and COX-2 was performed on 97 cancer cases, 19 Barrett cases and 5 controls treated between 1990 - 2007. Data was gathered from patient records and survival data was acquired in December 2015. Results Higher tumor stage was significantly associated with poorer survival (P < 0001), which was independent of HSP27, HSP70 and COX-2 immunostaining. HSP27 was moderately or strongly positive in 61,8% of the cancer cases, which was significantly associated to poorer survival (25,6 and 19 months versus 65,1 in weakly positive samples) (P = 0,01). Similar results were seen for HSP70, for which 30,4% of the cases were stained moderately or strong positive, and survival was 15 and 17,3 months compared to 41,7 months in weakly stained cases. COX-2 was negative in 83,3% of the cancer cases, and none of the samples had strong COX-2 immunostaining. COX-2 did not correlate with survival. Conclusion Moderate or high HSP27 and HSP70 staining intensities were associated with poor survival among patients with esophageal adenocarcinoma, which is now reported for the first time. According to previous studies opposite conclusions for esophageal squamous cell carcinoma was found. COX-2 did not impact survival in our study even though it's been found to be a negative prognostic factor in several previous studies. Disclosure All authors have declared no conflicts of interest." @default.
- W2892365617 created "2018-09-27" @default.
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- W2892365617 date "2018-09-01" @default.
- W2892365617 modified "2023-10-03" @default.
- W2892365617 title "PS02.043: OVEREXPRESSION OF HSP27 AND HSP70 ARE ASSOCIATED WITH DECREASED SURVIVAL AMONG PATIENTS WITH ESOPHAGEAL ADENOCARCINOMA" @default.
- W2892365617 doi "https://doi.org/10.1093/dote/doy089.ps02.043" @default.
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