In terms of the criteria for EGPA, the patient achieved a total score of 7 owing to the items of obstructive airway disease (+3), serum eosinophil count ≥ 1000/μL (+5), and PR3-ANCA (or C-ANCA) positivity (−1) and could be reclassified as having OvSD/pSS/EGPA (Table S2) [11,12,13]. Here, PRTN3 is linked to eosinophilic granulomatosis with polyangiitis.