BDKRB2 encodes the bradykinin B2 receptor, a G protein-coupled receptor that mediates diverse physiological responses including vasodilation, inflammation, and pain sensation 1. The receptor is structurally organized with seven transmembrane domains encoded by a single exon and shows high sequence conservation across species 1. Functionally, BDKRB2 activates phosphatidylinositol-calcium second messenger systems and influences nitric oxide production, particularly in inflammatory conditions 2. The gene exhibits significant clinical relevance across multiple contexts. Genetic variants affect antihypertensive drug responses, with specific polymorphisms influencing enalapril efficacy through interactions with other cardiovascular genes 3. In osteoarthritis, BDKRB2 +9/-9 bp polymorphisms correlate with increased receptor expression and nitric oxide production, suggesting a role in inflammatory joint disease progression 2. Additionally, BDKRB2 functions as a potential oncogene in glioma, where elevated expression associates with epithelial-to-mesenchymal transition pathways and poor patient survival 4. The receptor also plays roles in developmental processes, with evidence of genetic interactions with p53 affecting kidney development under stress conditions 5. These diverse functions highlight BDKRB2's importance in cardiovascular physiology, inflammatory responses, and pathological conditions.