Abstract
Introduction: The timing of tumor-specific palliative therapy and its influence on the survival of patients with stage IV lung cancer remain unclear. Methods: 375 patients with stage IV lung cancer who experienced an early or delayed therapy (early or delayed therapy group [TG]) were investigated using histology and ECOG performance score (ECOG-PS)-related subgroups. Kaplan-Meier and Cox regression analyses were used for survival analyses. Results: Patients in the early TG had a significantly shorter median overall survival (OS) than those in the delayed TG (6 vs. 11 months). Patients with an ECOG-PS of ≥1 were significantly more present in the early TG than in the delayed TG (66.8 vs. 51.9%). But an early therapy was also significantly associated to a shorter median OS in ECOG-matched subgroups (ECOG-PS of 0, 7 vs. 23 months; ECOG ≥1, 6 vs. 8 months). An early therapy was associated to a significantly worse median OS in histological subgroups (NSCLC, 5 vs. 11 months; SCLC, 7 vs. 11 months) and was an independent risk factor in uni- and multivariate analyses. Conclusions: An early initiation of cancer-specific therapy was associated with a shorter survival time in palliative lung cancer patients, independent of the ECOG-PS and histological subtype.
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