Studies have also demonstrated the presence of PAP-specific T cells that could secrete IFNγ in response to in vitro stimulation with PAP-derived peptides and/or lyse peptide pulsed T2 cells in healthy individuals (Stanford University Blood Center) [24], as well as in patients with PCa (University of Washington Medical Center and at the University of Wisconsin) [23]. The gene discussed is IFNG; the disease is posterior cortical atrophy.