IGHA1 and hepatocellular carcinoma: Specifically, differentially expressed IgA1 with fucosylated glycan structures (IgA1-144-N4H4F2/N5H4F2/N5H5F1S1/N5H5F2/N5H5F3 and IgA1-340-N5H5F1S2/N5H5F3/N6H3F1S2) and IgG2 with fucosylated glycan structures (IgG2-176-N4H3F1/N4H4F1/N5H3F1) were elevated in the progression of HBV-HCC determined by glycoproteomics.