PRTN3 and glomerulonephritis: Here, we present a case of Q fever endocarditis-associated glomerulonephritis in a Chinese boy with positive Antiproteinase 3 antibody (PR3)-antineutrophil cytoplasmic antibody (ANCA).<h4>Case presentation</h4>A 12-year-old Chinese boy presented with intermittent fever and hematuria for 2 months.