Abstract
Background
In clinical practice, some patients with advanced intrahepatic cholangiocarcinoma (ICC) cannot tolerate or refuse chemotherapy due to the toxicity, necessitating alternative treatments. PD-1 blockade combined with lenvatinib showed promising results in phase II studies with small sample size, but there is a lack of data on the routine use with this regimen. This study aimed to evaluate the effectiveness and safety of the regimen in patients with advanced ICC, and to identify predictors for treatment response and prognosis.
Methods
We conducted a retrospective cohort study of patients treated with PD-1 inhibitors plus lenvatinib for advanced ICC between July 2017 and August 2022. The study endpoints were progression-free survival (PFS), overall survival (OS), objective response rate (ORR), disease control rate (DCR), and safety. Biomarker analysis for CA19-9 and PD-L1 expression was performed. Exploratory analysis for genetic alternation was conducted.
Results
The study included 103 patients. It demonstrated a median PFS of 5.9 months and a median OS of 11.4 months. ORR was 18.4% and DCR was 80.6%. The incidence of grade 3 or 4 adverse events was 50.5%. Positive PD-L1 expression (TPS ≥ 1%) was associated with higher ORR (P = 0.013) and prolonged PFS (P = 0.023). Elevated CA19-9 (> 37 U/ml) was associated with decreased ORR (P = 0.019), poorer PFS (P = 0.005) and OS (P = 0.034). Patients with IDH1 mutations exhibited a favorable response to the treatment (P = 0.011), and patients with TP53 mutations tended to have worse OS (P = 0.031).
Conclusions
PD-1 blockade plus lenvatinib is effective and safe in routine practice. PD-L1 expression and CA19-9 level appear to predict the treatment efficacy. IDH1 mutations might indicate a better treatment response.
Clinical trial registration: NCT03892577.
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Data availability
The data that support the findings of our study are available from the corresponding author upon request.
Abbreviations
- AE:
-
Adverse event
- BTC:
-
Biliary tract cancer
- CA19-9:
-
Carbohydrate antigen 19-9
- CI:
-
Confidence interval
- CR:
-
Complete response
- CSCO:
-
Chinese Society of Clinical Oncology
- CTCAE:
-
Common Terminology Criteria for Adverse Events
- DCR:
-
Disease control rate
- ECOG PS:
-
Eastern Cooperative Oncology Group performance status
- ICC:
-
Intrahepatic cholangiocarcinoma
- IHC:
-
Immunohistochemistry
- MMR:
-
Mismatch repair
- MSI-H/L:
-
Microsatellite instability-high/low
- NCCN:
-
National Comprehensive Cancer Network
- NGS:
-
Next-generation sequencing
- ORR:
-
Objective response rate
- OS:
-
Overall survival
- PD-1:
-
Programmed death 1
- PFS:
-
Progression-free survival
- PR:
-
Partial response
- PUMCH:
-
Peking Union Medical College Hospital
- RECIST:
-
Response evaluation criteria in solid tumors
- SD:
-
Stable disease
- TPS:
-
Tumor proportion score
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Acknowledgements
We thank Dr. Jianzhen Lin (the First Affiliated Hospital of Nanjing Medical University) for his sincere assistance.
Funding
This work was supported by the National High Level Hospital Clinical Research Funding (2022-PUMCH-B-128), CAMS Innovation Fund for Medical Sciences (2019-I2M-5-035, 2021-I2M-1-061, 2022-I2M-C&T-A-003), CSCO-Hengrui Cancer Research Fund (Y-HR2019-0239, Y-HR2020QN-0414), CSCO-MSD Cancer Research Fund (Y-MSDZD2021-0213), and the National Ten-thousand Talent Program.
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HZ and LL contributed to the conception and design of the study. All authors participated in patient follow-up and contributed to data collection. JC, SW, and HW collated the data and performed analysis. JC, SW, and HW drafted the manuscript. All authors contributed to reviewing or revising the manuscript and approved the final version.
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The study was approved by the Ethics Committee of Peking Union Medical College Hospital (No. JS-1391), and was conducted in accordance with the Declaration of Helsinki. Informed consent was obtained from all patients.
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Chao, J., Wang, S., Wang, H. et al. Real-world cohort study of PD-1 blockade plus lenvatinib for advanced intrahepatic cholangiocarcinoma: effectiveness, safety, and biomarker analysis. Cancer Immunol Immunother 72, 3717–3726 (2023). https://doi.org/10.1007/s00262-023-03523-2
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DOI: https://doi.org/10.1007/s00262-023-03523-2