PTPRT (Protein Tyrosine Phosphatase, Receptor Type T): PTPRT is a gene that encodes a protein belonging to the protein tyrosine phosphatase family, which is important for cell signalling. It plays a role in regulating cellular processes such as cell growth and differentiation. Mutations in PTPRT have been linked to several cancers, particularly colorectal cancer, due to its involvement in signalling pathways that control cell proliferation.