Abstract

The impact of interstitial lung disease (ILD) on the clinical outcome of patients with small-cell lung cancer (SCLC) is not fully understood. The aim of this study was to investigate the impact of ILD on treatment and survival outcomes of SCLC patients. A retrospective analysis was performed on the clinical outcomes of SCLC patients, treated with chemotherapy, with or without ILD ([ILD group (n=16) and non-ILD group (n=51)]. Median PFS and OS were significantly shorter in the ILD group than in the non-ILD group (median PFS, 184 vs. 290 days, p=0.008; median OS, 236 vs. 691 days, p<0.001). Multivariate analysis revealed that coexisting ILD was an independent predictive factor of PFS (hazard ratio [HR]=2.06; 95% confidence interval [CI]=1.01-4.18; p=0.046) and OS (HR=3.29; 95%CI=1.53-7.08; p=0.002). Coexisting ILD might be a negative predictive factor of PFS and OS of SCLC patients treated with chemotherapy.

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