Among the rarest cases, ATIN induced by a kidney-limited sarcoidosis, G6PD patient with hemolysis induced ATIN, and isolated ATIN induced by ANCA-associated vasculitis (AAV) with positive C-ANCA, which the latter representing the first case in our country and the fourth case worldwide. Here, PRTN3 is linked to anti-neutrophil cytoplasmic antibody-associated vasculitis.