Abstract
PurposeAnlotinib, an antiangiogenic multi-target tyrosine kinase inhibitor (TKI), has shown favorable anticancer efficacy and acceptable safety in treating extensive-stage small cell lung cancer (ES-SCLC) in some clinical studies. This research aimed to explore the real-world efficacy and safety of anlotinib in ES-SCLC.MethodsPathologically confirmed ES-SCLC patients receiving anlotinib were enrolled for this retrospective study. The primary endpoint of this study was progression-free survival (PFS), and secondary endpoints included overall survival (OS), objective response rate (ORR), disease control rate (DCR), and adverse reactions.ResultsIn total, 202 patients were included in this study. The median PFS of all patients was 4.8 months [95% confidence interval (CI): 3.9–5.7], and the median OS was 7.6 months (95% CI 6.5–8.7). Respectively, the overall ORR and DCR were 30.2% and 87.1%. The univariate and multivariate Cox regression analyses revealed that patients with Eastern Cooperative Oncology Group Performance Status (ECOG PS) ≤1, plus chemotherapy or immunotherapy, plus radiotherapy, and post-medication hypertension might have longer PFS and OS. The PFS and OS were significantly prolonged in combination group than that in monotherapy group [PFS 6.0 vs 3.6 months, hazards ratio (HR)=0.49, 95% CI 0.34–0.70, P < 0.001; OS 9.2 vs 4.8 months, HR = 0.48, 95% CI 0.32–0.72, P < 0.001]. The main treatment-related adverse reactions were generally tolerated. The incidence of adverse reactions in combination group was higher than that in monotherapy group (75.0% vs 52.6%, P = 0.001). The most common adverse reaction was hypertension, followed by hand-foot syndrome and fatigue, regardless of monotherapy or combination group.ConclusionAnlotinib is effective and well tolerated in patients with ES-SCLC in the real-world. The clinical efficacy of anlotinib combined with chemotherapy or immunotherapy is better than that of monotherapy. Further investigations are needed for prospective studies with larger sample size.
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