S100A8 and digestive system disorder: A systematic search was conducted in PubMed (January 2018 to December 2024) using the combined keywords: (“calprotectin” OR “S100A8/A9”) AND (“IBD” OR “inflammatory bowel disease” OR “Crohn’s disease” OR “ulcerative colitis” OR “gastrointestinal disorders”) AND (“therapy” OR “treatment” OR “diagnosis” OR “management”).