CD4 and autoimmune pancreatitis: Increased production of interferon (IFN)‐γ by CD4+ Thelper‐cells type 1 (Th1) has been proposed to promote AIP,8 and treatment with IFN‐γ strongly aggravated AIP in mice.10 On the other hand, cytokines promoting the development of Th2 have also been described in the context of AIP.11