Immunogen sequence: NSTEPKVPNS ARAAKRARHK LKKKEKEKAQ LAAEALKQAN RVSGSREPRP ARERLLEWPD RELDRVNSFL SSRLQEIKNT VKDSIRASFS VCE Highest antigen sequence identity to the following orthologs: Mouse - 89%, Rat - 87%. FAM193B, also known as IRIZIO, was initially