IFNG and psoriasis: Remarkably, B cells from HLA-C*06:02+ psoriasis patients triggered a significantly greater activation of the Vα3S1/Vβ13S1 TCR than those from HLA-C*06:02+ healthy individuals, which showed hardly any stimulating activity, and this effect was also enhanced by pre-incubation of the PBMC subsets with IFN-γ.