Based on the adjustment of clinical research and development strategy，sponsor decided to terminate the study

This is an Asian multi-regional clinical trial (MRCT) in which ATG-008 will be administered orally to hepatitis B positive (HBV+) HCC subjects who have received at least one prior line of systemic therapy. It is designed as an open-label phase 2 trial evaluating the pharmacokinetics (PK), safety, tolerability and efficacy of oral ATG-008 administered daily until the radiologic disease progression (according to RECIST 1.1) or intolerable toxicity.

Inclusion Criteria:

1. Male or female aged from 18 to 70 years (inclusive) at the time when the ICF is signed.
2. Confirmed diagnosis of HCC.
3. Unresectable stage B or C HCC according to the Barcelona Clinic Liver Cancer (BCLC) staging.
4. HBV positive by serum test.
5. Received at least one prior line of systemic therapy.
6. ECOG performance status score of 0 or 1.
7. Satisfactory serum chemistry results
8. Adequate bone marrow function
9. Child-Pugh A without encephalopathy.
10. All subjects who participated in the study had to take reliable contraceptive measures within the trial and 3 months of after the trial.

Exclusion Criteria:

1. Symptomatic central nervous system metastases.
2. Locoregional HCC therapy, systemic chemotherapy, hormonal therapy or investigational therapy within 4 weeks prior to Screening.
3. Life expectancy of less than 3 months.
4. Prior therapy with mTOR inhibitors.
5. Prior organ transplant.
6. Persistent diarrhea or malabsorption.
7. Clinically significant bleeding.
8. Known history of human immunodeficiency virus (HIV) infection.
9. Uncontrolled intercurrent illness.
10. Any condition that confounds the ability to interpret data from the trial.