CD8A and posterior cortical atrophy: Within the cohort of patients with PCa, ILL-specific CTLs following ILL peptide stimulation were detectable in six patients (37.5%, ranging from 0.29 to 1.6% of the CD8+ cells), whereas ILL-specific CTLs following MutPAP42mer peptide stimulation were only detectable in four patients (26.7%, ranging from 0.30 to 1.09% of the CD8+ T cell population) (Table A4).