Fascin actin-bundling protein 2, retinal (FSCN2)

Fascin actin-bundling protein 2, retinal (FSCN2) is a cytoskeletal actin-binding protein specifically expressed in photoreceptor cells of the retina and stereocilia of inner ear hair cells[1][3][4]. FSCN2 stabilizes and organizes actin filaments into bundles, supporting the specialized structure and function of sensory cells. Genetic mutations in FSCN2 are causative for autosomal dominant retinitis pigmentosa (RP30) and are implicated in macular degeneration, leading to visual impairment[1][3]. Despite its primary role in retina and inner ear, recent cancer studies highlight its value as a prognostic biomarker in kidney renal cell carcinoma (KIRC)[4]. There are currently no approved drugs targeting FSCN2[1][4]. FSCN2 is classified as a member of the fascin family, distinct from commonly drug-targeted classes such as receptors or enzymes, and functions primarily to regulate cytoskeletal architecture and cell morphology rather than signaling or metabolic processes[1][3][4].

Other names

Fascin-2FSCN2RP30RFSNRetinal fascinfascin homolog 2actin-bundling proteinretinal

null (no direct targeting drugs—any mechanism would be hypothetical, e.g., disruption of actin bundling)