ITIH3 (Inter-Alpha-Trypsin Inhibitor Heavy Chain 3): ITIH3 is a protein within the inter-alpha-trypsin inhibitor family, involved in stabilizing the extracellular matrix and regulating inflammation. It contributes to tissue repair and protects against protease-related tissue damage. Dysregulation of ITIH3 has been linked to cancer progression and inflammatory diseases, underscoring its role in tissue homeostasis and the immune response.