Abstract
Background
Immune checkpoint inhibitor (ICI)-based treatments have become the mainstay of first-line treatment for unresectable hepatocellular carcinoma (HCC), but there has been a concern that intrahepatic HCC lesions may be less responsive to ICI monotherapy. We aimed to investigate the organ-specific response patterns among unresectable HCC patients treated with first-line atezolizumab-bevacizumab or lenvatinib.
Methods
This retrospective study included 386 patients with Child–Pugh A unresectable HCC who were treated with first-line atezolizumab-bevacizumab (n = 217) or lenvatinib (n = 169). The organ-specific response was separately evaluated according to the site of the lesions: liver, lung, lymph node (LN), and intraabdomen based on a radiological evaluation adopted from RECIST v 1.1.
Results
The median age was 60 years. Hepatitis B infection was the most common etiology (n = 270, 69.9%), and 291 (75.4%) patients had a viral etiology. The proportion of patients achieving a ≥ 30% reduction in the tumor burden for each organ category was overall higher in the atezolizumab-bevacizumab group than that in the lenvatinib group: 20.2% vs. 11.8%, 23.0% vs. 12.2%, 27.9% vs. 17.9% and 33.3% vs. 15.0% for intrahepatic, lung, LN, and intraabdominal lesions, respectively. The corresponding values for the subgroup with a viral etiology were 17.3% vs. 8.1%, 18.8% vs. 13.3%, 28.9% vs. 3.6%, and 36.0% vs. 12.5%, respectively.
Conclusion
Compared to lenvatinib, atezolizumab-bevacizumab was associated with a favorable organ-specific response regardless of the site of the tumor lesions. Unlike anti-PD-1 monotherapy, atezolizumab-bevacizumab had a comparable organ-specific response between intrahepatic and extrahepatic lesions, especially for those with viral etiology HCCs.
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Data availability
The data that support the findings of this study are available on request from the corresponding author. The data are not publicly available due to privacy or ethical restrictions.
Abbreviations
- HCC:
-
Hepatocellular carcinoma
- ICI:
-
Immune checkpoint inhibitor
- MKI:
-
Multikinase inhibitor
- OS:
-
Overall survival
- LN:
-
Lymph node
- ECOG:
-
Eastern Cooperative Oncology Group
- ALBI:
-
Albumin-bilirubin
- BCLC:
-
Barcelona Clinic Liver Cancer
- RECIST:
-
Response Evaluation Criteria in Solid Tumors
- PFS:
-
Progression-free survival
- AST:
-
Aspartate aminotransferase
- IQR:
-
Interquartile range
- ORR:
-
Objective response rate
- CI:
-
Confidence interval
- AFP:
-
Alpha-fetoprotein
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Contributions
Study concepts: HDK and CY; study design: HDK and CY; data acquisition: HDK, YGP, SK, KPK, SRP, MHR, BYR, and CY; data analysis and interpretation: HDK, YGP, and CY; statistical analysis: HDK and YGP; manuscript preparation: HDK and YGP; manuscript editing: HDK, YGP, and CY; manuscript review and approval: HDK, YGP, SK, KPK, SRP, MHR, BYR, and CY.
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Conflict of interest
CY received honoraria from Servier, Bayer, AstraZeneca, Merck Sharp & Dohme, Eisai, Celgene, Bristol Myers Squibb, Ipsen, Novartis, Boryung Pharmaceuticals, Mundipharma, and Roche, and received research grants from Servier, Bayer, AstraZeneca, Ono Pharmaceuticals, Ipsen, and Boryung Pharmaceuticals. HDK received honoraria from AstraZeneca, Bristol Myers Squibb, Ono Pharmaceuticals, Boryung Pharmaceuticals, and Boostimmune. The other authors have nothing to disclose.
Ethical approval and informed consent
This study was approved by the Institutional Review Board of Asan Medical Center (IRB No. 2021-0064) and was performed in accordance with the ethical standards of the Institutional Research Committee and the latest Declaration of Helsinki. The need for informed consent was waived by the Institutional Review Board of Asan Medical Center.
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Kim, HD., Park, YG., Kim, S. et al. Organ-specific response with first-line atezolizumab-bevacizumab versus lenvatinib for patients with advanced hepatocellular carcinoma. Hepatol Int (2024). https://doi.org/10.1007/s12072-023-10626-6
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DOI: https://doi.org/10.1007/s12072-023-10626-6