ARID1A and hepatocellular carcinoma: These studies all found TP53 to be the most common altered gene, followed by EGFR, MET, ARID1A, MYC, NF1, BRAF, ERBB2 CTNNB1, TERT, ATM, CDKN2A, PIK3CA, CCNE1, and ARID1A in HCC.