Detection of human leukocyte antigen compatibility and antibodies in liver transplantation in China

BACKGROUND: The exact roles of human leukocyte antigen (HLA) compatibility, HLA antibodies and underlying diseases in acute rejection of liver transplants are not clear. Moreover, cytomegalovirus (CMV) infection, one of the most common infections after transplantation, is related to HLA genotype and the incidence of acute rejection. METHODS: Since there are controversial reports, we analyzed the impact of HLA matching, HLA antibodies and underlying diseases in 38 liver transplant recipients in China, and assessed the association of CMV infection and HLA compatibility. RESULTS: The frequency of no HLA compatibility was high in patients without antigenemia (P=0.019). All 17 patients with HLA-A matching developed antigenemia (P<0.05). Patients with three HLA locus matches were not found in patients with acute rejection (P<0.05), and no relationship between HLA antibodies and acute rejection was found (P>0.05). In patients with acute rejection, no differences were found in the incidence of acute rejection in transplants for hepatitis 13, tumors, or combined hepatitis B and tumors (P>0.05). CONCLUSIONS: There are fewer acute rejections in transplants with more HLA compatibilities. Specific investigations of underlying diseases and HLA typing may be necessary in liver transplantation. The mechanisms of CMV infection and HLA matching should be further studied. HLA before transplantation should be examined for the prevention of acute rejection and CMV infection.