Tyrosine phosphatase which negatively regulates FAS-induced apoptosis and NGFR-mediated pro-apoptotic signaling (PubMed:15611135). May regulate phosphoinositide 3-kinase (PI3K) signaling through dephosphorylation of PIK3R2 (PubMed:23604317). . This is the function of PTPN13 (protein tyrosine phosphatase non-receptor type 13, Ensembl gene identifier ENSG00000163629).