The purpose of this study is to evaluate the efficacy and safety of TAC-101 after Transcatheter Arterial Chemoembolization (TACE) in patients with advanced, unresectable hepatocellular carcinoma (HCC) who are being scheduled for TACE.
Transcatheter arterial chemoembolization (TACE) is a commonly performed procedure in the treatment of unresectable liver tumors for selected patients. TACE is a major palliative treatment for these patients. Most patients will have intrahepatic recurrence of their tumors following TACE. In this study, which will be conducted in Asian countries excluding Japan, TAC-101 will be administered as maintenance therapy after TACE compared with placebo therapy after TACE to patients with advanced HCC who are being scheduled for TACE and who either have not had any previous TACE procedures or who received their most recent TACE at least 120 days before signing the Informed Consent Form (ICF) and the TACE procedure resulted in complete necrosis, to determine if TAC-101 will enhance the benefits of TACE.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Patients will receive TAC-101 20 mg (2 x 10-mg formulated tablets) administered orally every day with approximately 8 oz. water within 1 hour following a morning meal for 14 days followed by a 7-day recovery period, repeated every 21 days.
Patients will receive placebo (two matching tablets) at same frequency and duration of active treatment
radiologically proven progression-free survival (PFS)
Time frame: Tumor Imaging assessments will be conducted at screening/baseline within 14 days prior to first TACE; every 8 weeks during treatment within 14 days prior to first TACE and every 8 weeks during follow-up period within 14 days prior to first TACE.
Overall survival (OS)
Time frame: Survival status obtained every 8 weeks during imaging follow-up period, from first TACE, patients contacted every 12 weeks until death or for at least 3 yrs after randomization of the last patient.
Time to appearance of remote new lesions (TTNLr)
Time frame: Tumor Imaging assessments will be conducted at screening/baseline within 14 days prior to first TACE; every 8 weeks during treatment within 14 days prior to first TACE and every 8 weeks during follow-up period within 14 days prior to first TACE.
Objective tumor response rate (ORR) according to RECIST criteria (CR + PR)
Time frame: Tumor Imaging assessments will be conducted at screening/baseline within 14 days prior to first TACE; every 8 weeks during treatment within 14 days prior to first TACE and every 8 weeks during follow-up period within 14 days prior to first TACE.
Effects on the plasma levels of alpha-fetoprotein (AFP and AFP-L3)
Time frame: Blood samples for AFP and AFP-L3assessment obtained at Screening/ Baseline; every 8 weeks after first TACE during the treatment period; at the end of the treatment period; and every 8 weeks (± 2 weeks) from first TACE during imaging f/up period.
Number of post-randomization TACE procedures
Time frame: The number of post-randomization TACE procedures per patient in the double-blind treatment period patient will be counted every 8 weeks during treatment from first TACE.
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The adverse event (AE) profile and tolerability of TAC-101 therapy with TACE versus placebo therapy with TACE
Time frame: AEs will be reported from the time a patient signs ICF through the period of patient follow-up (30 days after the last dose of study medication).
The relationship between the PK of TAC-101 and its metabolites and safety and efficacy parameters, including hepatic function
Time frame: Pharmacokinetic blood samples will be collected (optional) at 4 hours (± 1 hour), 8 hours (± 1 hour), and 24 hours (± 1 hour) post-dose on Day 1 of treatment Cycle 1. The 24-hour sample must be collected prior to dosing on Day 2.
The biological effects of TAC-101 on selected RAR-related factors and growth factor VEGF-A
Time frame: Blood samples collected at Screening/Baseline; every 8 weeks (± 2 weeks) after first TACE during the treatment period; at the end of the treatment period; at the Safety Follow-up visit (30 days after the end of study treatment).
The relationship between tumor gene expression (mRNA expression) of co-activators and co-repressors and efficacy parameters
Time frame: Tissue samples collected at Screening/Baseline.