HCC Screening Using DNA Methylation Changes in ctDNA

Blood sample from patients with HCC, healthy individuals and individuals with hepatitis B will be collected, and DNA will extracted from PBMC and circulated tumor DNA will be subjected to bisulfite conversion. DNA from PBMC DNA will be analyzed with primers developed for the AHNAK-STAP1 genes. Plasma samples will be subjected to EZ direct DNA extraction and bisulfite conversion kit and will be amplified with primers developed to amplify the target regions. DNA will be used for the subsequent PCR amplification with specific primer to generate PCR amplicon for sequencing using a double PCR procedure. The product of PCR reaction will be subjected to indexed MiSeq Next-Generation sequencing that will allow us quantify DNA methylation level.