This is an open label, three-arm, phase 1 dose escalation study and phase 2 study of BBI608 in combination with sorafenib, or BBI503 in combination with sorafenib. The study population is adult patients with advanced hepatocellular carcinoma (HCC) who have not received systemic chemotherapy.~The phase 1 portion will involve dose-escalation of BBI608 administered in combination with a fixed starting dose of sorafenib (Arm 1), and dose escalation of BBI503 administered in combination with a fixed starting dose of sorafenib (Arm 2). The fixed starting dose-level of sorafenib for both arms will be 400 mg twice daily (800 mg total daily dose). Eligible patients will be randomized to either Arm 1 or Arm 2.~The phase 2 portion will be an open-label, 3-arm, randomized trial of patients with advanced HCC who have not received prior systemic treatment. Patients will be randomized to receive either, Arm 1: sorafenib administered in combination with BBI608 (at the RP2D determined for BBI608 plus sorafenib during the phase 1 portion); Arm 2: sorafenib in combination with BBI503 (at the RP2D determined for BBI503 plus sorafenib during the phase 1 portion), or Arm 3: sorafenib alone at a starting dose of 400 mg twice daily. The starting dose for sorafenib is the same for all study arms.
This is an open label, three-arm, phase 1 dose escalation study and phase 2 study of BBI608 in combination with sorafenib, or BBI503 in combination with sorafenib. The study population is adult patients with advanced hepatocellular carcinoma who have not received systemic chemotherapy.