Caenorhabditis elegans as a Diagnostic Aid for Pancreatic Cancer

Pancreas. 2021 May-Jun;50(5):673-678. doi: 10.1097/MPA.0000000000001814.

Abstract

Objectives: Early detection of pancreatic cancer is notoriously difficult. A novel cancer diagnostic method using the ability of nematodes to detect odor of urine samples has been developed (N-NOSE). This method has a high sensitivity and specificity for various cancers; however, it has not yet been verified in pancreatic cancer. We examined the usefulness of this method to aid early diagnosis of pancreatic cancer in a cancer center.

Methods: We collected urine samples and clinical data from patients hospitalized in our division, between July 2017 and February 2019. We excluded patients with a known current or past history of other cancers. We investigated the relationship between the results of N-NOSE and the presence of pancreatic cancer.

Results: There were 95 noncancer cases and 104 pancreatic cancer cases. The sensitivity and specificity of N-NOSE for pancreatic cancer were 84.6% (88/104) and 60% (57/95), respectively. N-NOSE was able to detect stages 0 to I pancreatic cancer and had a higher correlation with early-stage pancreatic cancer than advanced stage.

Conclusions: N-NOSE has sufficient sensitivity and specificity for use in clinical practice, and it holds great potential as a diagnostic aid for pancreatic cancer, especially for early-stage pancreatic cancer.

MeSH terms

  • Aged
  • Animals
  • Biological Assay*
  • Biomarkers, Tumor / urine*
  • Caenorhabditis elegans / physiology*
  • Early Detection of Cancer*
  • Female
  • Humans
  • Male
  • Middle Aged
  • Neoplasm Staging
  • Odorants / analysis*
  • Olfactory Perception*
  • Pancreatic Neoplasms / diagnosis*
  • Pancreatic Neoplasms / pathology
  • Pancreatic Neoplasms / urine
  • Predictive Value of Tests
  • Prospective Studies
  • Reproducibility of Results
  • Smell*

Substances

  • Biomarkers, Tumor

Associated data

  • UMIN-CTR/UMIN000027596