Novel insights into autoimmune gastritis: clinical profile and gastric neoplastic risk from an international multicentre study.

Autoimmune gastritis carries a regional variation in gastric neoplastic risk, with 2.9% developing adenocarcinoma and 10.6% developing neuroendocrine tumors across eight international centers.

• Why it matters: Understanding the diverse clinical features and cancer risks associated with autoimmune gastritis is crucial for tailored patient management and improving outcomes worldwide.
• What they did: A retrospective analysis of 1240 adults with histologically confirmed AIG from Europe, Türkiye, Latin America, the USA, and Japan assessed incidence rates and associated factors for gastric cancers over a median follow-up of 68 months.
• The result: Findings reveal that age over 65, intestinal metaplasia, elevated gastrin-17, and prior PPI use increase cancer risk, highlighting the need for region-specific surveillance strategies to mitigate neoplastic progression.