Cookies on this website
We use cookies to ensure that we give you the best experience on our website. If you click 'Continue' we'll assume that you are happy to receive all cookies and you won't see this message again. Click 'Find out more' for information on how to change your cookie settings.

PURPOSE: Although pancreatic ductal adenocarcinoma (PDAC) is an aggressive tumor, like other common cancers, it displays a wide range of biology. However, at present, there are no reliable tests to predict patients' cancer-specific outcomes and guide personalized treatment decisions. In this study, we aim to identify such biomarkers in resectable PDAC by studying SNPs in the CD44 gene, which drives the progression of pancreatic cancer. EXPERIMENTAL DESIGN: A total of 348 PDAC patients from three independent cohorts [Switzerland, Germany, The Cancer Genome Atlas (TCGA)] who underwent pancreatic resection are included in the study. Information on the haplotype structure of the CD44 gene is obtained using 1000 Genomes Project data, and the genotypes of the respective tagging SNPs are determined. Cox proportional hazards models are utilized to analyze the impact of SNP genotype on patients' survival. RESULTS: We identify an SNP in the CD44 gene (SNPrs187115) that independently associates with allelic differences in prognosis in all study cohorts. Specifically, in 121 Swiss patients, we observe an up to 2.38-fold (P = 0.020) difference in tumor-related death between the genotypes of SNPrs187115 We validate those results in both the German (HR = 2.32, P = 0.044, 101 patients) and the TCGA cohort (HR = 2.36, P = 0.044, 126 patients). CONCLUSIONS: CD44 SNPrs187115 can serve as a novel biomarker readily available at the time of PDAC diagnosis that identifies patients at risk for faster tumor progression and guide personalized treatment decisions. It has the potential to significantly expand the pool of patients that would benefit from tumor resection. Clin Cancer Res; 22(24); 6069-77. ©2016 AACR.

Original publication

DOI

10.1158/1078-0432.CCR-16-0058

Type

Journal article

Journal

Clin Cancer Res

Publication Date

15/12/2016

Volume

22

Pages

6069 - 6077

Keywords

Adenocarcinoma, Adult, Aged, Aged, 80 and over, Biomarkers, Tumor, Carcinoma, Pancreatic Ductal, Cohort Studies, Disease Progression, Female, Gene Expression Regulation, Neoplastic, Humans, Hyaluronan Receptors, Male, Middle Aged, Pancreatic Neoplasms, Polymorphism, Single Nucleotide, Prognosis, Proportional Hazards Models, Young Adult