Inflammatory cytokines that prevented AF included the CD40L receptor, Fms‐related tyrosine kinase 3 ligand, interleukin‐6, interleukin‐7, leukaemia inhibitory factor receptor, sulfotransferase 1A1 and tumour necrosis factor ligand superfamily member 12. The gene discussed is CD40; the disease is atrial fibrillation.