GOT1/AST1 expression status as a prognostic biomarker in pancreatic ductal adenocarcinoma
Prognostication in pancreatic ductal adenocarcinoma (PDAC) remains a challenge. Recently, a link between mutated KRAS and glutamic-oxaloacetic transaminase (GOT1/AST1) has been described as part of the metabolic reprogramming in PDAC. The clinical relevance of this novel metabolic KRAS-GOT1 link has...
Gespeichert in:
| Hauptverfasser: | , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
February 19, 2015
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| In: |
OncoTarget
Year: 2015, Jahrgang: 6, Heft: 6, Pages: 4516-4526 |
| ISSN: | 1949-2553 |
| DOI: | 10.18632/oncotarget.2799 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.18632/oncotarget.2799 Verlag, lizenzpflichtig, Volltext: https://www.oncotarget.com/article/2799/text/ 
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| Verfasserangaben: | Fenja M. Feld, Philipp D. Nagel, Stephanie E. Weissinger, Claudia Welke, Albrecht Stenzinger, Peter Möller, Jochen K. Lennerz |
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| 245 | 1 | 0 | |a GOT1/AST1 expression status as a prognostic biomarker in pancreatic ductal adenocarcinoma |c Fenja M. Feld, Philipp D. Nagel, Stephanie E. Weissinger, Claudia Welke, Albrecht Stenzinger, Peter Möller, Jochen K. Lennerz |
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| 520 | |a Prognostication in pancreatic ductal adenocarcinoma (PDAC) remains a challenge. Recently, a link between mutated KRAS and glutamic-oxaloacetic transaminase (GOT1/AST1) has been described as part of the metabolic reprogramming in PDAC. The clinical relevance of this novel metabolic KRAS-GOT1 link has not been determined in primary human patient samples. Here we studied the GOT1 expression status as a prognostic biomarker in PDAC. We employed three independent PDAC cohorts with clinicopathological- and follow-up data: a) ICGC, comprising 57 patients with whole-exome sequencing and genome-wide expression profiling; b) ULM, composed of 122 surgically-treated patients with tissue-samples and KRAS status; c) a validation cohort of 140 primary diagnostic biopsy samples. GOT1 expression was assessed by RNA level (ICGC) or immunolabeling (ULM/validation cohort). GOT1 expression varied (ICGC) and correlation with the KRAS mutation- and expression status was imperfect (P = 0.2, ICGC; P = 0.8, ULM). Clinicopathological characteristics did not differ when patients were separated based on GOT1 high vs. low (P = 0.08–1.0); however, overall survival was longer in patients with GOT1-expressing tumors (P = 0.093, ICGC; P = 0.049, ULM). Multivariate analysis confirmed GOT1 as an independent prognostic marker (P = 0.009). Assessment in univariate (P = 0.002) and multivariate models in the validation cohort (P = 0.019), containing 66% stage IV patients, confirmed the independency of GOT1. | ||
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| 700 | 1 | |a Weissinger, Stephanie E. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Welke, Claudia |e VerfasserIn |4 aut | |
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| 700 | 1 | |a Möller, Peter |e VerfasserIn |4 aut | |
| 700 | 1 | |a Lennerz, Jochen K. |e VerfasserIn |4 aut | |
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