Mepolizumab or Placebo for EosinophilicGranulomatosis with Polyangiitis. Wechsler ME, et al. N Engl J Med. 2017 May18;376(20):1921-1932 https://www.ncbi.nlm.nih.gov/pubmed/28514601 Abstract BACKGROUND: EGPAは好酸球性血管炎だ。Mepolizumabは…