CGNL1 (cingulin like 1) is a junctional protein that anchors cell-cell junctions to actin-based cytoskeletons, particularly at tight junctions and adherens junctions 1. The protein stabilizes Ve-cadherin association with the actin cytoskeleton and regulates focal adhesion assembly through vinculin and paxillin recruitment 1. CGNL1 is enriched in endothelial cells during vascular growth and is crucial for multicellular tubule formation and neovascular stability in vivo 1. Beyond vascular development, CGNL1 plays unexpected roles in metabolic regulation and disease pathogenesis. In hypertension, CGNL1 knockout prevents angiotensin II-induced hypertension by uncoupling this signaling from sodium transporter activation (NHE3 and NCC) in kidney tubules 2. CGNL1 expression is altered in multiple disease contexts: it serves as a diagnostic marker elevated in pro-inflammatory fibroblasts of diabetic foot ulcers 3, appears in prognostic models for oral squamous cell carcinoma 45, and may suppress pancreatic cancer progression through circRNA-mediated apoptosis pathways 6. Additionally, CGNL1 duplications have been associated with schizophrenia susceptibility 7. These findings suggest CGNL1 functions beyond structural junctional roles, integrating cytoskeletal organization with signaling cascades affecting vascular integrity, kidney physiology, inflammation, and cancer progression.