PRTN3 and Increased total eosinophil count: Laboratory findings included peripheral blood eosinophilia (1.5 × 109 cells/mcl), c-ANCA titer +  +  + , high titer positivity for anti-PR3 [300 U/l, normal values (n.v.)< 10 U/l] and low titer rheumatoid factor (15.6 U/l, n.v. < 14U/l).