The possible association of the presence of IgA and IgG to GP21−4 in PSC patients with performed liver transplantation (LTx) and concomitant occurrence of autoimmune hepatitis, cirrhosis; cholangiocarcinoma, CD, UC, IBD (CD or UC) was investigated by Fisher's exact test (Table 3). This evidence concerns the gene CD79A and pancreatic serous cystadenoma.