Moreover, MR revealed the role of Fms‐related tyrosine kinase 3 ligand, interleukin‐6, interleukin‐7, leukaemia inhibitory factor receptor, sulfotransferase 1A1 and tumour necrosis factor ligand superfamily member 12 in protecting against AF. This evidence concerns the gene NR3C2 and atrial fibrillation.