Naked cuticle homolog 2 (Naked-2) is a protein which in humans is encoded by the gene NKD2. Naked-2 is one of the Naked cuticle (Nkd) family of proteins that regulate the Wnt signaling pathway. Both naked-1 and naked-2 proteins can bind to Dishevelled proteins (DVL1, DVL2, DVL3), but only naked-2 can bind to the EGF-ligand family member TGF alpha and regulate its polarized secretion in cultured epithelial cells.