PRRT2 and systemic lupus erythematosus: Earlier, our group described the decreased expression of several protein kinase C (PKC) isoenzymes both in monocytes (ε, δ, η, ξ) and T cells (β, ε, δ, η, θ, ξ) of systemic lupus erythematosus (SLE) patients consisting of white European women in 90%; additionally, we also reported the elevating and restoring effects of glucocorticosteroid (GCS) treatment in vivo and in vitro [1].