Abstract 2421
Background
Co-inhibiting angiogenesis and PD-1/PD-L1 is a promising regimen for several solid tumours; however, its role in bile tract carcinoma (BTC) remains unclear. We sought to investigate the antitumour efficacy and toxicity of lenvatinib (an oral anti-angiogenesis drug) plus PD-1 blockade in patients with advanced BTC.
Methods
A retrospective cohort study involved patients with advanced BTC who have treated with lenvatinib plus PD-1 blockade. The PD-1 inhibitors only included pembrolizumab and nivolumab. The primary outcomes of this study were the objective response rate (ORR) and progression-free survival (PFS). Biomarkers, including PD-L1 expression, tumour mutational burden (TMB) and genetic alterations, were analysed.
Results
In total, 56 patients (29 with lenvatinib plus nivolumab, 27 with lenvatinib plus pembrolizumab) were enrolled. The ORR was 30.4%, the disease control rate was 85.7%, and the clinical benefit rate was 50%. The median PFS was 5.0 months (95% CI: 4.0-6.0), and the median overall survival was 11.0 months (95% CI: 6.6-15.4). For tolerability, 96.4% of the patients had adverse events (AEs), but only 19.6% of the patients experienced grade-3 AEs without grade-4/5 AEs occurring. Fatigue, hypertension and hypothyroidism were the most common AEs. Moreover, PD-L1 positive expression had higher ORR and longer PFS, while TMB was not correlated with the response and survival outcomes. Further analysis of efficacy-related factors demonstrated that patients with resected BTC could obtain longer OS.
Conclusions
Lenvatinib plus PD-1 inhibitor presents an effective and safe strategy in patients with advanced BTC, especially those with PD-L1 positive expression and prior surgical resection.
Clinical trial identification
NCT03892577.
Editorial acknowledgement
Milind Javle.
Legal entity responsible for the study
The protocol of this study was compliant with the principles of the Declaration of Helsinki and was also approved by the institutional review board and ethics committee of PUMCH.
Funding
Has not received any funding.
Disclosure
All authors have declared no conflicts of interest.
Resources from the same session
5544 - Evaluation of a radiomic signature of CD8 cells in patients treated with immunotherapy-radiotherapy in three clinical trials.
Presenter: Roger Sun
Session: Poster Display session 3
Resources:
Abstract
1117 - Biomarkers predictive of overall survival in advanced cancer patients treated with a peptide-based cancer vaccine.
Presenter: Shigetaka Suekane
Session: Poster Display session 3
Resources:
Abstract
1922 - Expression of PD-L1 in plasma exosomes of NSCLC patients and its associations with PD-L1 expression of corresponding tumor tissues
Presenter: Shaorong Yu
Session: Poster Display session 3
Resources:
Abstract
5495 - Patient’s perspective on digital biomarkers in advanced urologic malignancies
Presenter: Severin Rodler
Session: Poster Display session 3
Resources:
Abstract
3166 - A comprehensive Pan-cancer study of FGFR Aberrations in Chinese cancer patients
Presenter: Yang Gao
Session: Poster Display session 3
Resources:
Abstract
3277 - A Systemic Inflammation Response Index (SIRI) correlates with survival and could be a Predictive Factor for mFOLFIRINOX in Metastatic Pancreatic Cancer (PC)
Presenter: Vilma Pacheco-Barcia
Session: Poster Display session 3
Resources:
Abstract
2680 - Circulating biomarkers and risk of immune-related adverse events (irAEs) in patients (pts) with advanced Non-small cell lung cancer (aNSCLC) and metastatic melanoma (mMel)
Presenter: Alberto Pavan
Session: Poster Display session 3
Resources:
Abstract
4066 - Breast cancer in young women of Kazakh population depending on germline mutations: results of next-generation sequencing
Presenter: Dilyara Kaidarova
Session: Poster Display session 3
Resources:
Abstract
5514 - Discovery of an ImmunoTranscriptomics signature in blood for early colorectal cancer detection
Presenter: Paolo Angelino
Session: Poster Display session 3
Resources:
Abstract
1595 - Serum Netrin-1 as a Biomarker for Colorectal Cancer Detection
Presenter: Jinzhou Zhu
Session: Poster Display session 3
Resources:
Abstract