APOB and neoplasm: The results and observations of these analyses are shown in Figures 7D, E, and from the results it can be noted that the tumor tissues showed higher methylation levels when compared with the normal liver tissues in the APOB CpG islands—cg0763176, cg15246511, cg26112457, and cg05606082, these four sites are the methylation target sites of the APOB CpG island.