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Background Melanoma brain metastases (MBMs) have historically poor overall survival (OS). Recently introduced systemic anticancer therapies (SACTs), namely targeted therapies such as BRAF inhibitors and immunotherapy, to control advanced disease have shown improved survival. Today, increasingly aggressive strategies are sought for MBM. We review outcomes in MBM after surgery or stereotactic radiosurgery (SRS) and the survival impact in advanced systemic disease when combined with novel anticancer therapies. Methods A retrospective cohort study of patients referred to a regional neuro-oncology multidisciplinary team (MDT) meeting with MBM. Demographic data, extent of systemic disease, and data on surgical and oncological management were collected, plus the use of SACT. The primary outcomes were median OS, 12- and 24-month survival, and progression-free survival. Results Between 2010 and 2018, 142 patients with MBM were referred. Following the introduction of SACT, the rate of referrals to MDT more than doubled from 11.6 to 25.7 patients per year. Focal brain metastasis was treated surgically in 23 (16.2%) patients and by SRS in 29 (20.4%). Fifty-six (39.4%) patients underwent palliative whole-brain radiotherapy and 34 (23.9%) did not receive treatment. Median OS was 11 months for the surgical cohort, 9 months for the SRS cohort, and increased when treatment with or without SACT was considered to 23 and 12 months, respectively. Conclusion In the setting of SACTs, survival in MBM is significantly improved after surgery or SRS even in patients with advanced and uncontrolled systemic disease at the time of presentation, supporting an aggressive approach to MBM management.

Survival in melanoma brain metastases in the era of novel systemic therapies