“…[ 5 ] To our knowledge, there are three pediatric EGPA cases successfully treated with mepolizumab in the literature. [ 6 - 8 ] In this case with relapsing and refractory myocarditis, the clinical efficacy of mepolizumab is presented without any adverse events for one year. Mepolizumab seems to be a safe treatment option in eosinophil-related end-organ inflammation for pediatric cases.…”