PRF1 and posterior cortical atrophy: There was a group x time interaction for CD3+CD56+Perforin+ counts, with ADT increasing by 172% at 0 h (+101 cell/uL, 95% CI 60, 142, P < 0.001, Table 3) while PCa (+82%, P = 0.115) and CON (+92%, P = 0.295) experienced smaller, non-significant rises.