FABP1 and autoimmune pancreatitis: Furthermore, we did not find any significant differences in the following urine markers between the symptomatic AIP cases compared with the asymptomatic AIP cases: KIM-1 FABP-1, renin, α-GST (Figure 2), calbindin, TIMP-1, collagen IV, TFF, or CXCL10 (Figure 4).