Result: In patient n 4, apart from the AA substitution Q129H in the S region in both tissues, sequencing in HCC and non-HCC liver tissue showed differences in the AA substitutions and deletions both in the pre-S1 region (T40S and AA deletion in positions 4, 8 and 17 for HCC and S98T, N103D, T114I, T119P and the AA deletion in position 128-131 for non-HCC liver tissue) and in the pre-S2 region (no AA substitution or deletion in