IL5RA and eosinophilic granulomatosis with polyangiitis: Blockage of the IL-5/IL-5R axis is promising and has been well studied in recent years within numerous diseases such as eosinophilic asthma [13], eosinophilic granulomatosis with polyangiitis (EGPA) [14], chronic rhinosinusitis with polyposis [15], hypereosinophilic syndrome [16], and eosinophilic esophagitis [17, 18].