A Study of Camrelizumab Combined Apatinib in Hepatocellular Carcinoma Previously Treated With Immune Checkpoint Inhibitors (ICIs).

Inclusion Criteria:

* Aged 18 years old, both genders.
* Conform to the clinical diagnosis histological or cytological confirmation of HCC(hepatocellular carcinoma) and with at least one measurable lesion by computed tomography (CT) scan or magnetic resonance imaging (MRI) according to RECIST 1.1.
* Liver function status Child-Pugh score less than or equal to 7.
* Barcelona Clinic Liver Cancer stage Category B or C.
* Disease progression following prior Immune Checkpoint Inhibitors (PD-1/PD-L1 or CTLA4 inhibitors) treatment for HCC, for at least 2 consecutive treatment cycles. Receipt of no more than 2 prior systemic therapies for advanced HCC.
* Eastern Cooperative Oncology Group Performance Status of 0 or 1.
* Life expectancy of at least 12 weeks.
* Adequate bone marrow, liver and renal function (without blood transfusion, without growth factor or blood components support within 14 days before enrollment).

Exclusion Criteria:

* Patients with any active autoimmune disease or history of autoimmune disease, including but not limited to the following: hepatitis, pneumonitis, uveitis, colitis (inflammatory bowel disease), hypophysitis, vasculitis, nephritis, hyperthyroidism, and hypothyroidism, except for subjects with vitiligo or resolved childhood asthma/atopy. Asthma that requires intermittent use of bronchodilators or other medical intervention should also be excluded.
* The prior ICIs treatments were discontinued by intolerable adverse events.
* Known or occurrence of central nervous system (CNS) metastases or hepatic encephalopathy.
* Patients with tumor burden ≥50% of the liver volume or received liver transplantation.
* Patients with clinical symptoms of ascites.
* Hypertension and unable to be controlled within normal level following treatment of anti-hypertension agents(within 3 months): systolic blood pressure \> 140 mmHg, diastolic blood pressure \> 90 mmHg.
* Clinically significant cardiovascular and cerebrovascular diseases, including but not limited to severe acute myocardial infarction within 6 months before enrollment, unstable or severe angina, or coronary artery bypass surgery, Congestive heart failure (New York heart association (NYHA) class \> 2), ventricular arrhythmia which need medical intervention.
* previous digestive tract bleeding history within 3 months or evident gastrointestinal bleeding tendency, such as: esophageal varices, local active ulcerative lesions, gastric ulcer and duodenal ulcer, the ulcerous colitis, gastrointestinal diseases such as portal hypertension or resection of tumor with bleeding risk, etc.
* Proteinuria ≥ (++) and 24 hours total urine protein \> 1.0 g.
* Prior systemic chemotherapy, radiotherapy, immunotherapy, hormone therapy, surgery or target therapy within 4 weeks (or 5 half-life of the drug, calculate the longer ) before the study drug administration, or any unresolved AEs \> Common Terminology Criteria for Adverse Events (CTCAE) Grade 1.
* Prior Camrelizumab or Apatinib treatments.