Gastric Cancer Research Uncovers New Insights on Myeloperoxidase

Strategic Insights -

A recent study published in Frontiers in Immunology has shed new light on the role of myeloperoxidase (MPO) in gastric cancer. Researchers from Sichuan University, led by Junteng Zhou, analyzed data from 16,943 healthy individuals and 375 gastric adenocarcinoma (GA) patients from The Cancer Genome Atlas (TCGA). Their findings indicate that MPO is inversely associated with gastric mucosal damage in healthy individuals, while it serves as a prognostic biomarker linked to immune dysregulation in GA patients.

Key Takeaways:

  • MPO is inversely associated with markers of gastric mucosal damage, such as pepsinogen levels, in healthy individuals.
  • In gastric adenocarcinoma patients, MPO is linked to immune dysregulation and serves as a prognostic biomarker.
  • Multivariate linear regression analysis revealed a significant association between MPO and pepsinogen levels in the healthy cohort.
  • Survival analyses demonstrated that MPO is a prognostic factor for overall survival (OS), disease-specific survival (DSS), and progression-free interval (PFI) in GA patients.
  • Gene expression analysis and functional enrichment studies revealed that MPO is involved in immune-regulatory mechanisms in GA patients.

Statistics:

  • 16,943 healthy individuals were analyzed in the study.
  • 375 GA patients were included in the study from The Cancer Genome Atlas (TCGA).
  • MPO was inversely associated with pepsinogen levels in the healthy cohort (b = -0.009, P < 0.01).
  • MPO was significantly associated with overall survival (OS), disease-specific survival (DSS), and progression-free interval (PFI) in GA patients.

Sources:

  • Zhou JT, Kong QH, et al. (2025). Integrated analysis of myeloperoxidase in gastric health and cancer: associations with pepsinogen levels, immune regulation, and prognosis in a large healthy population-based and TCGA cohorts. Frontiers in Immunology, 16.
  • Health & Medicine Week. (2025). Sichuan University Researchers Have Provided New Data on Gastric Cancer (Integrated analysis of myeloperoxidase in gastric health and cancer: associations with pepsinogen levels, immune regulation, and prognosis in a large healthy population-based and TCGA cohorts). June 27, 2025; p 4202.