CUB domain containing protein 2 (CDCP2)

CUB domain containing protein 2 (CDCP2) is described as a CUB domain-containing extracellular protein. The gene is located on human chromosome 1 (1p13.3)[1][7]. CUB domains are structural motifs commonly found in extracellular and plasma membrane proteins involved in processes such as developmental patterning, cell signaling, receptor-mediated endocytosis, and protein–protein interactions[2][3]. However, there is currently no evidence that CDCP2 itself acts as a receptor, enzyme, transporter, or recognized drug target. Unlike other CUB domain proteins such as SCUBE family (SCUBE1/SCUBE2/SCUBE3), which have established roles in cancer, vascular biology, and development, CDCP2’s function is uncharacterized. Its closest known paralog is CUBN, but the function, clinical significance, and mechanism of action of CDCP2 remain unclear in current biomedical literature and databases[7]. There is potential confusion with the well-studied SCUBE2 gene (another CUB domain-containing protein); however, CDCP2 is a distinct gene with no compelling evidence supporting its role as a clinically actionable or therapeutic target[6]. Some gene-disease association databases report links to rare conditions (e.g., osteosclerotic myeloma, Bartter syndrome type 3), but these are not substantiated by mechanistic studies or clinical validation[7]. At present, CUB domain containing protein 2 (CDCP2) cannot be considered a validated therapeutic target. There is no current knowledge of drugs or interventions against it, no characterized molecular function, and it is not established as a biomarker or subject to known therapeutic safety concerns[1][7].

Other names

CUB domain-containing protein 2CDCP2_HUMAN