DNA Methylation and Gene Expression with Clinical Covariates Explain Variation in Aggressiveness and Survival of Pancreatic Cancer Patients

Cancer Invest. 2020 Sep;38(8-9):502-506. doi: 10.1080/07357907.2020.1812079. Epub 2020 Sep 16.

Abstract

Pancreatic cancer (PC) is associated with a high mortality rate. We explored the interindividual variation of cancer outcomes, attributable to DNA methylation, gene expression, and clinical factors among PC patients. We aim to determine whether we could differentiate subjects with greater nodal involvement, higher cancer staging, and subsequent survival. We modeled every response variable as a function of a linear predictor involving the effects of clinical variables, methylation, and gene expression in a Bayesian framework. Our results highlight the overall importance of wide-spread alterations in methylation and gene expression patterns associated with survival, nodal metastasis, and staging.

Keywords: DNA methylation; Pancreatic cancer; biostatistics; cancer genetics; gene expression.

MeSH terms

  • Bayes Theorem
  • Carcinoma, Pancreatic Ductal / genetics*
  • Carcinoma, Pancreatic Ductal / mortality
  • Carcinoma, Pancreatic Ductal / pathology
  • DNA Methylation*
  • Humans
  • Lymph Nodes / pathology
  • Lymphatic Metastasis
  • Models, Statistical
  • Neoplasm Staging
  • Pancreatic Neoplasms / genetics*
  • Pancreatic Neoplasms / mortality
  • Pancreatic Neoplasms / pathology
  • Survival Analysis
  • Transcriptome