Molecular epidemiology lens on the exposome may sharpen pancreatic cancer prevention strategies

Writing for Cancer Research UK's news channel, molecular epidemiologist Núria Malats sets out how combining exposome research — the totality of environmental exposures across a lifetime — with molecular epidemiology could deepen understanding of why pancreatic cancer remains one of the hardest malignancies to detect early and to prevent.

Malats argues that risk for pancreatic cancer is shaped by an intricate interplay of genetic predisposition, lifestyle factors, occupational exposures, and the biological responses those exposures trigger at the molecular level. Disentangling these threads, she contends, requires study designs that can capture longitudinal exposure data alongside biomarkers such as DNA methylation patterns, transcriptomic signatures, and metabolomic readouts.

The piece is framed as a scientific perspective rather than a report of new primary data. It situates the exposome concept within the broader field of pancreatic cancer epidemiology and reflects on where methodological gaps remain — including the challenge of collecting high-quality biological specimens early enough in disease course to be analytically informative.

Pancreatic ductal adenocarcinoma has a five-year survival rate below 15 % in most high-income settings, largely because most cases present at advanced stage. Better understanding of who is at elevated risk and why remains a priority for the research community.