CD4 and psoriasis: When we considered the 24 patients with psoriasis affected by PsA (see Supplementary Table S1), a correlation between PASI and CD4 T-cell responses to LL37, cit-LL37, and carb-LL37 was evident for all three antigens (native LL37: r = 0.41, p = 0.02, N = 24; cit-LL37: r = 0.40, p = 0.023, N = 24; carb-LL37: r = 0.48, p = 0.009, N = 24).