Among the antigens that discriminated between PDAC and benign inflammatory disease (Figure 3), three showed significantly different MFI between both AIP subtypes: PP1R15A (p = 0.0387), CYP3A5 (p = 0.0173) and WDR45 (p = 0.0173). This evidence concerns the gene CYP3A5 and autoimmune pancreatitis.