PTCH2（patched 2），癌症关联基因，基因ID：8643，该基因编码修补基因家族的跨膜受体。编码蛋白可能在hedgehog信号通路中起抑癌作用。此基因的改变与痣样基底细胞癌综合征、基底细胞癌、髓母细胞瘤和先天性巨大肿瘤易感性有关。已经描述了选择性剪接的转录变体。[由refseq提供，2009年10月]This gene encodes a transmembrane receptor of the patched gene family. The encoded protein may function as a tumor suppressor in the hedgehog signaling pathway. Alterations in this gene have been associated with nevoid basal cell carcinoma syndrome， basal cell carcinoma， medulloblastoma， and susceptibility to congenital macrostomia. Alternatively spliced transcript variants have been described.[provided by RefSeq， Oct 2009]。