ArticlePancreas2019
Expression and Clinical Significance of Protein Kinase RNA-Like Endoplasmic Reticulum Kinase and Phosphorylated Eukaryotic Initiation Factor 2α in Pancreatic Ductal Adenocarcinoma.
Article in Pancreas, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
9 citing papers in PubMed, 15 citations in OpenAlex.
- A Patient-Derived Organ-on-Chip Platform for Modeling the Tumor Microenvironment and Drug Responses in Pancreatic Cancer.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- What's on the menu?: metabolic constraints in the pancreatic tumor microenvironment.The Journal of clinical investigation · 2025Review
- Modulation of Endoplasmic Reticulum Stress in Experimental Anti-Cancer Therapy.International journal of molecular sciences · 2025Review
- The Integrated Stress Response in Pancreatic Development, Tissue Homeostasis, and Cancer.Gastroenterology · 2024Review
- Article
- ID1 marks the tumorigenesis of pancreatic ductal adenocarcinoma in mouse and human.Scientific reports · 2022Article
- The Orexin-A/OX1R System Induces Cell Death in Pancreatic Cancer Cells Resistant to Gemcitabine and Nab-Paclitaxel Treatment.Frontiers in oncology · 2022Article
- The Prognostic Value of PERK in Cancer and Its Relationship With Immune Cell Infiltration.Frontiers in molecular biosciences · 2021Article
- Endoplasmic reticulum stress serves an important role in cardiac ischemia/reperfusion injury (Review).Experimental and therapeutic medicine · 2020Review
Corrections and comments
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Authors and funding
10 authors at 2 institutions in 2 countries.
Funding
Abstract
objectivesEndoplasmic reticulum stress and subsequent phosphorylation of eukaryotic initiation factor 2α (eIF2α) by protein kinase R-like endoplasmic reticulum kinase (PERK) plays an important role in the development and chemoresistance of pancreatic ductal adenocarcinoma (PDAC). However, the expression and significance of phosphorylated eIF2α (p-eIF2α) and PERK in PDAC have not been examined.
methodsWe examined p-eIF2α and PERK expression in 84 PDAC and paired normal pancreas samples by immunohistochemistry and Western blotting and correlated the results with clinicopathologic parameters and survival.
resultsMean PERK H score was 140.8 in PDAC compared with 82.1 in normal pancreas (P < 0.001). High p-eIF2α expression was present in 56% of PDACs versus 7.6% of normal pancreases (P < 0.001). High PERK and p-eIF2α expression correlated with shorter overall survival (P = 0.048 and P = 0.03, respectively). By multivariate analysis, high p-eIF2α (P = 0.01), positive margin (P = 0.002), and lymph node metastasis (P = 0.01) were independent prognosticators for survival.
conclusionsThe expression levels of PERK and p-eIF2α are higher in PDAC than those in normal pancreas. High levels of PERK and p-eIF2α are predictors of shorter survival in PDAC patients, suggesting that PERK and eIF2α could be promising targets in PDAC.
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