CXCR2 (C-X-C Motif Chemokine Receptor 2): CXCR2 is a receptor for C-X-C motif chemokines and plays a significant role in mediating leukocyte migration to sites of inflammation. It is primarily involved in the recruitment of neutrophils, critical for the initial response to infection or injury. Dysregulation of CXCR2 signaling is associated with chronic inflammatory diseases, including COPD and asthma, and contributes to the inflammatory microenvironment favorable for tumor growth in cancer. Targeting CXCR2 signaling represents a therapeutic strategy in treating inflammatory diseases and limiting cancer progression....