Lurbinectedin in extensive-stage small-cell lung cancer: a brief report of the IFCT-2105 LURBICLIN study

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Small-cell lung cancer (SCLC) is a highly aggressive type of lung cancer. Lurbinectedin is recommended as second-/third-line treatment for advanced, previously treated SCLC. LURBICLIN is a nationwide, non-interventional, retrospective chart review study, based on the cohort of consecutive patients enrolled in the named patient use for lurbinectedin in France. A total of 312 patients were included. Lurbinectedin was delivered as second-line therapy in 138 (44%) patients. Grade 3-4 treatment-related adverse events were observed in 28 (9%) and 15 (5%) patients, respectively. Objective response rate (ORR) to lurbinectedin was 22% in the intention-to-treat population. After a median follow-up of 20.8 months, median progression-free survival (PFS) was 1.9 months [95% confidence interval (CI) 1.8-2.0 months]. At multivariate analysis, chemotherapy-free interval (CTFI) ≥ 90 days was an independent predictor of higher PFS [hazard ratio (HR)= 0.64, 95% CI 0.50-0.84, P < 0.0001]. The median overall survival (OS) was 4.7 months (95% CI 4.0-5.4 months). At multivariate analysis, performance status < 2 and CTFI ≥ 90 days were independent predictors of higher OS (HR= 0.71, 95% CI 0.53-0.95, P= 0.03; and HR= 0.58, 95% CI 0.44-0.76, P < 0.0001, respectively). Overall, 147 (47%) patients had initiated subsequent systemic treatments. LURBICLIN confirms the activity of lurbinectedin in patients with SCLC with a manageable safety profile. Lurbinectedin monotherapy provides an alternative option for SCLC patients.