DS89002333 is a potent, orally active PRKACA inhibitor (IC50: 0.3 nM).DS89002333 has shown good antitumor effects in a patient-derived xenograft model of FL-HCC expressing a DNAJB1-PRKACA fusion gene.DS89002333 can be used to study fibrotic hepatocellular carcinoma ( FL-HCC).