For example, clusterin (CLU) plays an essential role in pancreas regeneration and is expressed in chronic pancreatitis (Lee et al., 2011; Xie et al., 2002); α-amylase (AMY2B) is a characteristic gene for mature acinar cells, encoding a digestive enzyme (Omichi and Hase, 1993). The gene discussed is CLU; the disease is chronic pancreatitis.