CD4 and primary biliary cholangitis: The expression levels of LncRNA XIST in CD4+ T cells in PBC patients were significantly higher in PBC than that in other groups (1 ± 0 vs 0.37 ± 0.03, 1 ± 0 vs 0.3 ± 0.02, 1 ± 0 vs 0.29 ± 0.01, p<0.005).