Journal
TARGETED ONCOLOGY
Volume 14, Issue 6, Pages 729-742Publisher
SPRINGER
DOI: 10.1007/s11523-019-00688-8
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Funding
- Maria Sklodowska-Curie Institute-Oncology Center
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Background Although BRAF/MEK inhibitors are generally considered to be equally effective whether given before or after immunotherapy, no prospective trial has confirmed this hypothesis and contradictory data have been published in the melanoma field. Objective We aimed to investigate the outcomes of patients with metastatic melanoma depending on the first-line treatment. Patients and Methods In this ambidirectional cohort, single-center study, we included 253 consecutive melanoma patients treated in our institution with an anti-PD1 antibody or BRAF/MEK inhibitors, who started first-line treatment between December 2015 and March 2018. Kaplan-Meier estimator, log-rank test, and Cox proportional hazard model were used in this analysis. Results First-line median progression-free survival (PFS) for all patients was 5.7 months (m), 6.9 m on anti-PD-1 therapy and 5.6 m for combination targeted therapy. Patients with BRAF mutated melanoma had 6.0 m median PFS on immunotherapy. At a median follow-up of 23.2 m with 149 events, in BRAF wild-type patients treated with anti-PD1, median overall survival (OS) was 18.1 m. BRAF mutated patients treated with first-line BRAF/MEK inhibitors had 11.7 m median OS. High neutrophil to lymphocyte ratio, high LDH level, ECOG > 0, and the presence of brain metastases negatively impacted PFS and OS. Conclusions In BRAF mutated patients with normal LDH, first-line immunotherapy seems a more effective approach. We have demonstrated that although BRAF mutation is a negative prognostic factor in stage IV melanoma, the use of two different systemic treatment modalities allows achievement of comparable survival in BRAF mutated and BRAF wild-type patients.
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