Transarterial chemoembolization plus lenvatinib with or without a PD-1 inhibitor for advanced and metastatic intrahepatic cholangiocarcinoma: a retrospective real-world study

Comparison analysis of ICIs and chemotherapy combined with or without lenvatinib as first-line treatment of unresectable intrahepatic cholangiocarcinoma

BACKGROUND

Effective first-line treatments for unresectable intrahepatic cholangiocarcinoma (ICC) remain limited. This real-world study aimed to compare the efficacy of immune checkpoint inhibitors (ICIs) plus chemotherapy combined with or without Lenvatinib as first-line treatment in unresectable ICC patients and identify predictors of treatment response and prognosis.

METHODS

In this retrospective cohort study, 58 patients with unresectable ICC received either dual therapy (ICIs plus chemotherapy) or triple therapy (ICIs plus chemotherapy and Lenvatinib) as first-line treatment. The endpoints were progression-free survival (PFS), overall survival (OS), objective response rate (ORR), and disease control rate (DCR). Survival curve was plotted by the Kaplan-Meier method. A Cox proportional hazards model was performed to investigate risk factors of PFS and OS.

RESULTS

No significant differences were observed between triple therapy and dual therapy as first-line treatment for unresectable ICC patients in terms of PFS (median PFS: 10.3 vs. 11.1 months, P > 0.05) and OS (median OS: 14.0 vs. 15.0 months, P > 0.05). The ORR (39.4% vs. 30.4%) and DCR (90.9% vs. 73.9%) were comparable between the triple therapy group and dual therapy group (P > 0.05). In the multivariate analysis, tumor burden score (TBS, ≥ 8) and tumor number (≥ 2) were associated with prolonged PFS (P < 0.05), while TBS was an independent factor for OS (P < 0.05).

CONCLUSIONS

Triple therapy did not demonstrate any benefit on both PFS and OS compared to dual therapy as first-line treatment for patients with unresectable ICC. TBS and tumor number may guide treatment stratification.

Effectiveness and safety of transarterial chemoembolization combined with PD-1 inhibitors and lenvatinib for unresectable intrahepatic cholangiocarcinoma

BACKGROUND

The objective of this study was to evaluate the therapeutic effectiveness and safety of transarterial chemoembolization (TACE) combined with programmed cell death-1 (PD-1) inhibitors and lenvatinib in the treatment of unresectable intrahepatic cholangiocarcinoma (uICC).

METHODS

This multicenter retrospective study screened patients with uICC who underwent TACE in combination with PD-1 inhibitors and lenvatinib between January 2019 and June 2023. Tislelizumab or camrelizumab (200 mg) was intravenously administered every three weeks. The daily dose of lenvatinib was 8 mg for patients weighing < 60 kg and 12 mg for those weighing ≥ 60 kg. In cases of disease progression, the therapeutic strategy was adjusted based on the clinical condition and individual patient's treatment preferences. Options included transitioning to standard or supportive care or continuing treatment with TACE in combination with PD-1 inhibitors and lenvatinib. The primary outcomes were overall survival (OS) and progression-free survival (PFS), while secondary outcomes included the objective response rate (ORR), disease control rate (DCR), and the incidence of adverse events (AEs).

RESULTS

A total of 59 patients with uICC were included. Over a median follow-up period of 32.3 months, the median OS and PFS were 25.8 months (95% confidence interval [CI]: 17.9-33.7) and 9.5 months (95% CI: 7.9-11.0), respectively. The ORR was 55.9%, and the DCR was 96.6%. Grade 3 or four AEs were observed in 15 of 59 patients (25.4%).

CONCLUSION

TACE combined with PD-1 inhibitors and lenvatinib demonstrated a promising therapeutic potential with a manageable safety profile for patients with uICC.

RELEVANCE STATEMENT

The combination of TACE, PD-1 inhibitors, and lenvatinib represents a novel therapeutic option for patients with uICC.

KEY POINTS

TACE plus PD-1 inhibitors and lenvatinib represent a promising therapeutic strategy for uICC. The safety profile of TACE plus PD-1 inhibitors and lenvatinib was manageable. This study demonstrated improved outcomes compared to prior standard-of-care treatments.

Comparative efficacy of transarterial chemoembolization with and without PD-1 inhibitor in the treatment of unresectable liver cancer and construction and validation of prognostic models

Background

In recent years, therapeutic strategies for liver cancer have been continuously evolving, with transarterial chemoembolization (TACE) being widely applied. Although TACE has demonstrated good short-term efficacy, long-term prognosis remains a challenge. This study aimed to investigate the clinical efficacy and safety of TACE combined with tyrosine kinase inhibitors (TKIs) and programmed cell death protein 1 (PD-1) inhibitors versus TACE combined with TKIs alone. Additionally, we explored prognostic factors, constructed a prognostic model, and validated it.

Methods

A retrospective analysis was conducted on 174 patients with unresectable hepatocellular carcinoma at Lu'an Hospital of Traditional Chinese Medicine Affiliated to Anhui University of Traditional Chinese Medicine from December 21, 2018, to January 15, 2023. Of these, 122 patients were treated with TACE + TKIs + PD-1, and 52 patients with TACE + TKIs. The objective was to compare overall survival (OS) and progression-free survival (PFS) between the two groups, analyze adverse events to assess the safety of the treatment regimen, explore risk factors affecting the prognosis of patients' OS and PFS, construct a prognostic model, and validate it through meta-analysis.

Results

The median OS in the TACE + TKIs + PD-1 group was significantly better than that in the TACE + TKIs group {20.8 months [95% confidence interval (CI): 13.6-28.0] vs. 14.7 months (95% CI: 11.6-17.8), P<0.001}. The median PFS in the TACE + TKIs + PD-1 group was also significantly better than that in the TACE + TKIs group [8.6 months (95% CI: 6.6-10.6) vs. 5.2 months (95% CI: 4.8-5.6), P<0.001]. The disease control rate (DCR) and objective response rate (ORR) were 82.8% and 37.7% in the TACE + TKIs + PD-1 group, and 57.7% and 28.9% in the TACE + TKIs group, respectively. The incidence of rash was significantly higher in the TACE + TKIs + PD-1 group than in the TACE + TKIs group. Multifactorial analysis identified treatment options (TACE + TKIs + PD-1 vs. TACE + TKIs) [hazard ratio (HR) =0.311, 95% CI: 0.192-0.503, P<0.001], Barcelona Clinic Liver Cancer (BCLC) stage (B/C) (HR =0.367, 95% CI: 0.235-0.574, P<0.001), and Eastern Cooperative Oncology Group performance status (ECOG PS) (1/0) (HR =1.974, 95% CI: 1.059-3.678, P=0.03) as independent prognostic factors for OS. Treatment options (HR =0.352, 95% CI: 0.221-0.559, P<0.001) and extrahepatic metastasis (yes/no) (HR =2.034, 95% CI: 1.201-3.444, P=0.008) were identified as independent prognostic factors for PFS. The results were confirmed through meta-validation. The area under the curve (AUC) for the 1-, 2-, and 3-year OS nomograms were 0.706, 0.775, and 0.741, respectively, indicating good predictive performance of the model.

Conclusions

The TACE + TKIs + PD-1 treatment regimen significantly outperformed TACE + TKIs in terms of OS, PFS, and DCR but increased the incidence of rash. An ECOG PS of 1 and BCLC-C stage were identified as risk factors for OS, while extrahepatic metastasis was an independent risk factor for PFS. The high accuracy of the survival prediction model constructed in this study provides a basis for clinical prognosis.

Hepatic arterial infusion of GEMOX plus systemic gemcitabine chemotherapy combined with lenvatinib and PD-1 inhibitor in large unresectable intrahepatic cholangiocarcinoma

PURPOSE

To assess the efficacy and safety of hepatic arterial infusion chemotherapy (HAIC) of gemcitabine and oxaliplatin (GEMOX) plus systemic gemcitabine chemotherapy (GEM-SYS) in combination with lenvatinib and programmed cell death protein-1 (PD-1) inhibitor for patients with large unresectable intrahepatic cholangiocarcinoma (uICC).

METHODS

From November 2019 to December 2022, 21 large uICC patients who underwent GEMOX-HAIC (Day 1) and GEM-SYS (Day 8) (3w/cycle) combined with lenvatinib and PD-1 inhibitor were retrospectively enrolled. Local tumor response, progression-free survival (PFS), overall survival (OS), and adverse events (AEs) were analyzed. Tumor response was assessed by the Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1. AEs were evaluated by the common terminology criteria for adverse events (CTCAE) version 5.0.

RESULTS

After a median follow-up duration of 16.0 months (range 5-43.5 months), 17 patients had died. The median OS was 19.5 months (range 9-43.5 months), and the median PFS was 6.0 months (range 2.5-38.5 months). The 1-, 2-, and 3-year OS rates were 71.4 %, 42.9 %, and 19.0 %, respectively. The 1-, 2-, and 3-year PFS rates were 33.3 %, 19.0 %, and 9.5 %, respectively. Complete response, partial response, stable disease, and progressive disease were observed in 0 (0 %), 11 (52.3 %), 5 (23.8 %), and 5 (23.8 %) patients, respectively. The disease control rate and objective response rate were 76.1 % and 52.3 %, respectively. None of the enrolled patients experienced grade 5 AEs.

CONCLUSIONS

GEMOX-HAIC plus GEM-SYS in combination with lenvatinib and PD-1 inhibitor was effective and well tolerated for patients with large uICC.

Unveiling the promise of PD1/PD-L1: A new dawn in immunotherapy for cholangiocarcinoma

Cholangiocarcinoma (CCA), a rare yet notably aggressive cancer, has experienced a surge in incidence in recent years. Presently, surgical resection remains the most effective curative strategy for CCA. Nevertheless, a majority of patients with CCA are ineligible for surgical removal at the time of diagnosis. For advanced stages of CCA, the combination of gemcitabine and cisplatin is established as the standard chemotherapy regimen. Despite this, treatment efficacy is often hindered by the development of resistance. In recent times, immune checkpoint inhibitors, particularly those that block programmed death 1 and its ligand (PD1/PD-L1), have emerged as promising strategies against a variety of cancers and are being increasingly integrated into the therapeutic landscape of CCA. A growing body of research supports that the use of PD1/PD-L1 monoclonal antibodies in conjunction with chemotherapy may significantly improve patient outcomes. This article seeks to meticulously review the latest studies on PD1/PD-L1 involvement in CCA, delving into their expression profiles, prognostic significance, contribution to oncogenic processes, and their potential clinical utility.

Liver-Directed Therapy Combined with Systemic Therapy: Current Status and Future Directions

In the past several decades, major advances in both systemic and locoregional therapies have been made for many cancer patients. This has led to modern cancer treatment algorithms frequently calling for active interventions by multiple subspecialists at the same time. One of the areas where this can be clearly seen is the concomitant use of locoregional and systemic therapies in patients with primary or secondary cancers of the liver. These combined algorithms have gained favor over the last decade and are largely focused on the allure of the combined ability to control systemic disease while at the same time addressing refractory/resistant clonal populations. While the general concept has gained favor and is likely to only increase in popularity with the continued establishment of viable immunotherapy treatments, for many patients questions remain. Lingering concerns over the increase in toxicity when combining treatment methods, patient selection, and sequencing remain for multiple cancer patient populations. While further work remains, some of these questions have been addressed in the literature. This article reviews the available data on three commonly treated primary and secondary cancers of the liver, namely, hepatocellular carcinoma, cholangiocarcinoma, and metastatic colorectal cancer. Furthermore, strengths and weaknesses are reviewed and future directions are discussed.