Left atrial myocardial fibrosis was positively correlated with the level of proinflammatory and profibrotic cytokines/chemokines, IL‐6, MCP‐1, and TNF‐α, in EAT [24] and myocardial fibrosis is a known substrate for atrial fibrillation. This evidence concerns the gene CCL2 and atrial fibrillation.