Objective: Patient-reported outcomes (PROs) that predict survival in cancer patients have yet to be realized as practical tools for clinicians to make better treatment decisions. To identify such PROs in adults with advanced melanoma treated with immunotherapy, this study used 7.5-year follow-up data from CheckMate-067, a phase 3, randomized, double-blind study of nivolumab or nivolumab plus ipilimumab versus ipilimumab.
Methods: PRO data assessed using the European Organization of Research for the Treatment of Cancer Core-30 and EQ-5D-3L at baseline and during subsequent visits after treatment initiation were pooled across treatment arms. Associations between baseline PRO or change from baseline (CFB) scores with survival outcomes (progression-free survival [PFS], overall survival [OS], and melanoma-specific survival [MSS]) were examined using Cox proportional hazards models for PFS or OS and cause-specific hazard models for MSS.
Results: Baseline and CFB scores for most PRO domains, especially for physical functioning, global health status/quality of life (GHS/QoL), fatigue, and EQ-5D visual analog scale (VAS), were prognostic of all survival outcomes. Achieving meaningful improvement/maintenance of baseline PRO scores at 12 weeks following treatment initiation predicted better survival outcomes than with meaningful worsening from baseline.
Conclusions: PROs at baseline and during treatment, particularly for physical functioning, GHS/QoL, fatigue, and EQ-VAS, were prognostic of survival outcomes. This knowledge may accelerate development of prognostic tools to manage treatment in patients with previously untreated unresectable or metastatic melanoma who undergo immunotherapy.
Keywords: Advanced melanoma; Immunotherapy; Melanoma-specific survival (MSS); Overall survival (OS); Patient-reported outcome (PRO); Prognostic factors; Progression-free survival (PFS); Quality of life (QoL); Survival analysis.
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