ERBB2 and hepatocellular carcinoma: A study on 14 advanced HCC patients has shown that ctDNA can be utilized as a diagnostic marker in the detection of TP53, CTNNB1, PTEN, CDKN2A, ARID1A, MET, CDK6, EGFR, MYC, BRAF, RAF1, FGFR1, CCNE1, PIK3CA and ERBB2/HER2 mutations [113,114,115].