Abstract
Patients with extensive-stage small-cell lung cancer (ES-SCLC) have high relapse rates and poor prognosis. Anlotinib monotherapy has shown promising efficacy for patients with ES-SCLC and has a non-overlapping toxicity profile with chemotherapy. Therefore, the study aims to assess the efficacy and safety of the addition of anlotinib to platinum-chemotherapy as first-line therapy for patients with ES-SCLC. ES-SCLC patients without systemic chemotherapy and immunotherapy were recruited. Eligible patients received anlotinib (12mg/day, on day 1-14) of a 21-day cycle, with concomitant etoposide (100mg/m<sup>2</sup>, on day 1-3) plus cisplatin (75mg/m<sup>2</sup>, on day 1) or carboplatin (AUC = 4-5, on day 1) for 4-6 cycles, followed by indefinite anlotinib maintenance therapy. The primary endpoint was progression-free survival (PFS). Secondary endpoints included objective response rate (ORR), disease control rate (DCR), overall survival (OS). Between Jan 15, 2019 and Dec 31, 2020, 25 patients were enrolled. At the data cut-off time (November 3, 2021), the median follow-up was 14.3months. Median PFS was 10.3months (95% CI: 6.0-14.5) and median OS was 17.1months (95% CI: 11.1-19.3). The ORR and DCR were 90% and 100%, respectively. The most common grade 3 or worse treatment-related adverse events were neutropenia (50%), leukopenia (35%), thrombocytopenia (25%), fatigue (10%), nausea (10%), hyponatremia (10%), anemia (10%). One patient discontinued treatment due to treatment-related adverse events. No treatment-related death occurred. Anlotinib plus platinum-chemotherapy as first-line therapy for ES-SCLC has anti-tumor activity, and showed acceptable tolerability. These results provide a basis for future randomized controlled trials.
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