In a rare number of individuals with ALPS or ALPS-related illnesses, additional mutations of the genes for FAS-ligand (FASLG), Caspase 10 (CASP10), Caspase 8 (CASP8), NRAS, and KRAS have also been found [76]. ALPS revised diagnostic criteria 2009 are shown in Table 2 [77]. Here, FASLG is linked to autoimmune lymphoproliferative syndrome.