Memory CD45RO+ T cells from peripheral blood mononuclear cells (PBMCs) of patients with active Behçet disease (BD) and SLE and healthy controls were stimulated with IFNα, showing an elevated expression of IFNγ in memory CD4+ T cells in BD patients and controls, but not in SLE patients (11). The gene discussed is IFNA1; the disease is systemic lupus erythematosus.