Abstract
Background
Previous studies showed that both immune checkpoint inhibitors (ICIs) and anlotinib have central nervous system (CNS) efficacy. This study aimed to evaluate the efficacy and safety of ICIs combined with anlotinib in small cell lung cancer (SCLC) patients with brain metastases (BMs).
Methods
We retrospectively reviewed SCLC patients with CNS metastases confirmed by brain magnetic resonance imaging (MRI). Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST 1.1) and Response assessment in neuro-oncology brain metastases (RANO-BM) were used to evaluate treatment response to ICIs plus anlotinib. Kaplan–Meier analysis and Cox regression analysis were performed to determine patient’s prognosis.
Results
Sixty-six patients with baseline BMs were included. For patients with measurable intracranial lesions, the intracranial objective response rate (ORR) was 29.2% based on RECIST 1.1 criteria and was 27.1% based on RANO-BM criteria. The median intracranial progression-free survival (PFS) was 9.0 months (95% confidence interval [CI], 6.5–11.5 months). The median overall survival (OS) was 13.4 months (95% CI, 10.7–20.5 months). Multivariate Cox regression analysis showed that high disease burden (hazard ratio [HR] = 4.83, P < 0.001), multiple BMs (HR = 2.71, P = 0.036), and more than or equal to 3 prior lines of therapy (HR = 2.56, P = 0.023) were independent negative predictors of OS. The overall incidence of treatment-related adverse events (TRAEs) was 75.8%, and grade 3–4 TRAEs were reported in 19.7% of patients.
Conclusions
Our results suggested that ICIs plus anlotinib had potent CNS efficacy with tolerable toxicity and could be a promising treatment option for SCLC patients with BMs.
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Data availability
The datasets generated and/or analyzed during the current study are not publicly available but are available from the corresponding author on reasonable request.
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Funding
The study was funded by National Natural Science Foundation of China (81972796 and 82272845), Natural Science Foundation of Shandong Province (ZR2019MH010 and ZR2019MH289), Beijing Bethune Charitable Foundation (flzh202107), Wu Jieping Medical Foundation (320.6750.2020-12-10), CSCO-Haosen Foundation (Y-HS202102-0089), and CSCO-Xinda Foundation (Y-XD202001-0008).
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XJ M and ZQ H conceived of the review and edited the manuscript. FR collected the data. CZ L and LY J analyzed the data. SJ Z analyzed the data and drafted the article.
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This retrospective study has been approved by the Ethics Review Board of Shandong Cancer Hospital and it conforms to the provisions of the Declaration of Helsinki.
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Zhou, S., Ren, F., Li, C. et al. Efficacy and safety of immune checkpoint inhibitors plus anlotinib in small cell lung cancer with brain metastases: a retrospective, multicentre study. J Neurooncol 160, 631–642 (2022). https://doi.org/10.1007/s11060-022-04182-6
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DOI: https://doi.org/10.1007/s11060-022-04182-6