The L5 peptide consists of 14 amino acids (Arg-Leu-Asn-Val-Gly-Gly-Thr-Tyr-Phe-Leu-Thr-Thr-Arg-Gln) and has been proven able to specifically target GPC3-expressing HCC [22]. This evidence concerns the gene GPC3 and hepatocellular carcinoma.