The estimated odds of psoriasis decreased by 3.3% if the number of CD8+PD-1+ increased by 1 cell/μL, by 36.9% if percentages of CD4+PD-1+ cells increased by 1%, and by 29.5% if percentages of CD8+PD-1+ cells increased by 1%, on average. Here, CD8A is linked to psoriasis.