There were no obvious abnormalities in the levels of vasculitis-related markers (P-ANCA, C-ANCA, MPO-Ab, PR3-Ab, and ACA), anti-extractable nuclear antigen peptide antibody (anti-ENA antibody) or rheumatoid factor, and the results of routine urine and stool tests and liver and kidney function tests were normal. Here, PRTN3 is linked to vasculitis.