Efficacy, Safety, and Treatment Patterns of Transcatheter Arterial Chemoembolization (TACE) Combined With Atezolizumab and Bevacizumab in Unresectable Hepatocellular Carcinoma: a Multicenter, Retrospective, Observational Real-world Study

Study Overview
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Brief Summary
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This study will evaluate the efficacy and safety of TACE combined with atezolizumab + bevacizumab in the treatment of unresectable hepatocellular carcinoma, and the treatment patterns of the combination regimen

Detailed Description
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This study is a multi-center, retrospective and observational real-world study to explore the efficacy, safety and treatment pattern of TACE combined with Atezolizumab + Bevacizumab in unresectable hepatocellular carcinoma. The target population for the planned retrospective analysis of this project is patients who have been diagnosed with unresectable HCC according to the guidelines for Diagnosis and Treatment of Primary Liver Cancer in China (2019 Edition) and treated with TACE combined with atezolizumab + bevacizumab.

Official Title
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Efficacy, Safety, and Treatment Patterns of Transcatheter Arterial Chemoembolization (TACE) Combined With Atezolizumab and Bevacizumab in Unresectable Hepatocellular Carcinoma: a Multicenter, Retrospective, Observational Real-world Study

Conditions
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HCC

Intervention / Treatment
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* Drug: TACE


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: All patients were diagnosed with unresectable hepatocellular carcinoma according to the guidelines for Diagnosis and Treatment of Primary Liver Cancer in China (2019 Edition); Patients ≥ 18 years old, male or female; Child-Pugh Class A and B liver function; ECOG-PS score of 0   2 points; Received TACE in combination with atezolizumab + bevacizumab for at least one interval of no more than eight weeks. Exclusion Criteria: Other primary malignancies; Incomplete data, such as no baseline image that can be assessed according to RECIST 1.1 or mRECIST, and survival outcome.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Study Plan
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How is the study designed?
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Arms and Interventions

| Intervention/Treatment |
| --- |
|Drug: TACE|TACE in combination with atezolizumab + bevacizumab for at least one interval of no more than eight weeks.|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Overall survival | Overall survival (OS): defined as the time from the start of the first TACE or atezolizumab + bevacizumab (whichever occurs first) to death due to any cause. | 1 year | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Progression-Free Survival | Progression-Free Survival (PFS): defined as the time from the start of the first TACE or atezolizumab + bevacizumab (whichever occurs first) to the first occurrence of disease progression or death from any cause. | 1 year | 
| Objective response rate | Objective response rate (ORR): defined as the percentage of patients with objective response (CR and PR) from the start of treatment until tumor progression. | 1 year | 
| One-year survival rate | One-year survival rate: defined as the percentage of patients who are survival for 1 year from the start of this treatment. | 1 year | 
| Immune-TACE PFS | Immune-TACE PFS: defined as the time from the first TACE or atezolizumab bevacizumab (whichever occurs first) to the occurrence of one of the following events (whichever occurs first): 20% enlargement of intra- or extra-hepatic lesions as assessed by mRECIST or appearance of new extra-hepatic lesions; TACE refractoriness: insufficient tumor response in the treated tumor for three consecutive times (20% increase by mRECIST); Deterioration of macrovascular invasion (MVI, defined as tumor invasion of the portal vein or hepatic vein and its branches); Deterioration of liver function to Child-Pugh C or mALBI 2b; Death from any cause. | 1 year | 
| Disease control rate | Disease control rate (DCR): defined as the proportion of patients achieving complete response (CR) or partial response (PR) or stable disease (SD). | 1 year | 
| Treatment pattern | Treatment pattern: including the timing and frequency of TACE (including its matching chemotherapy regimen), the treatment regimen of atezolizumab + bevacizumab, the sequence of combination therapy and the treatment regimen of the latter line. | 1 year |