Interdisciplinary Approach in Gastrointestinal Cancers -- Gastrointestinal Cancers: What Is the Real Board of Microenvironment and the Role of Microbiota-Immunity Axis -- Epithelial-Mesenchymal Transition in Gastrointestinal Cancer: From a Basic to a Clinical Approach -- Metabolomics of Gastrointestinal Cancers -- Deregulation of Immune System in Gastric Cancer Development, How Immune Nutrition Might Restore the Functions of Immune Cells -- Helicobacter pylori Virulence Factors, Pathogenicity, and Gastric Cancer -- Gastric Cancer and Helicobacter pylori -- Role of Neuromodulators in Regulation of the Tumor Microenvironment of Gastric and Colorectal Cancers -- The Role of Tumor Microenvironment in Colon Cancer -- Unraveling the Esophageal Cancer Tumor Microenvironment: Insights and Novel Immunotherapeutic Strategies -- The Interplay Between Immunity and Gut Microbiota in Colon Cancer -- Immunotherapy in Gastrointestinal Cancer Focusing on CAR-T Cell Therapy -- Development of Biocompatible Nanocarriers for the Treatment of Colorectal Cancer -- Challenges of Onco-therapeutics in Early Onset Colorectal Cancer -- Unintentional Weight Loss and Malnutrition After Esophageal Cancer and Treatment -- Current Clinical Landscape of Immunotherapeutic Approaches in Pancreatic Cancer Treatment. The Tumor Microenvironment in Pancreatic Cancer and Challenges to Immunotherapy. .