ArticlePathology oncology research : POR2019
Clinical Implications of NRAS Overexpression in Resectable Pancreatic Adenocarcinoma Patients.
Article in Pathology oncology research : POR, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.
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Who cites it
3 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Evaluation of translational potential of mRNA vaccine candidate antigens for pancreatic cancer: a systematic review based on clinical evidence and stratified prioritization strategies.Frontiers in immunology · 2026Pooled it
- Mutant K-Ras in Pancreatic Cancer: An Insight on the Role of Wild-Type N-Ras and K-Ras-Dependent Cell Cycle Regulation.Current issues in molecular biology · 2023Article
- miRFA: an automated pipeline for microRNA functional analysis with correlation support from TCGA and TCPA expression data in pancreatic cancer.BMC bioinformatics · 2019Article
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Authors and funding
8 authors.
Funding
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is one of the most lethal forms of cancer, and its incidence is rising worldwide. Although survival can be improved by surgical resection, when detected at an early stage, this type of cancer is usually asymptomatic, and disease becomes only apparent after metastasis. Adjuvant treatment does not improve survival, thus after surgery there is a lack of predictive and prognosis biomarkers to predict treatment response and survival. The mitogen-activated protein-kinase and phosphoinositide 3-kinase signalling pathways play a crucial role in cancer development and progression. Especially, activated RAS proteins promote cell proliferation through constitutive stimulation of the downstream effectors RAF-MEK-ERK and PI3K-AKT. Mutational status of NRAS is required in several types of cancer like colorectal or cutaneous melanoma. However, mutations in this gene are very scarce in PDAC patients, and NRAS determination is not usually performed in clinical practice for this kind of tumor. In this study, we analyse the association between NRAS protein expression and progression-free survival and overall survival of an homogenous cohort of pancreatic ductal adenocarcinoma patients from a single-centre. Interestingly, we found that patients with high expression not only showed longer progression-free survival than those patients with low expression (22 versus 9 months, respectively) (P = 0.013), but also longer overall survival (43 versus 19 months, respectively) (P = 0.020). These results confirm NRAS expression could be used to differentiate patients according to their prognosis. Proportional hazard model revealed NRAS expression together with grade of differentiation as pathological variables to predict patient's outcome.
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