PTCH2Patched 2 is a protein that in humans is encoded by the PTCH2 gene.FunctionThis gene encodes a transmembrane receptor of the patched gene family. The encoded protein may function as a tumor suppressor in the hedgehog signaling pathway.Clinical significanceAlterations in this gene have been associated with nevoid basal cell carcinoma syndrome, basal cell carcinoma, medulloblastoma, and susceptibility to congenital macrostomia.