Evaluation of serum sST2 and sCD40L values in patients with microvascular angina.

•Coronary microvascular dysfunction plays a major role in the pathogenesis of microvascular angina (MVA).•The pathophysiology of MVA is not well understood.•MVA carries significant morbidity and increases the risk for cardiovascular events.•Serum sST2 and sCD40L can play a role in myocardial fibrosis, endothelial dysfunction, and inflammation in patients with MVA.