On a multivariate model, the pretreatment serum EPCA level remained a statistically significant association with the presence of AIP after androgen suppression, with a HR of 5.418 (Table 4, 95%CI: 3.637–7.251, P<0.001), whereas the other variables like the clinical stage and the initial PSA level did not (Table 4). This evidence concerns the gene KLK3 and autoimmune pancreatitis.