Abstract 3175
Background
The risk of brain metastases (BM) in advanced melanoma (MM) is 40-50%. Historical median survival of MM patients (pts) with BMs was 4-5 months. Current systemic treatments with targeted therapy and immunotherapy prolong survival up to > 2 years, while prognosis of BMs carrying pts is not fully defined and optimal treatment sequencing remain unknown. We aimed to analyze the contemporary treatment outcomes in this specific group of pts.
Methods
Clinical data, course of treatment and clinical outcomes of 376 subsequent stage IV melanoma patients with BMs treated in one reference institution in period 2000-2018 were analyzed retrospectively (39% of BMs pts diagnosed before 2014).
Results
Median age for BMS diagnosis was 61, 171 pts were BRAF+ and 118 - wild-type. Median time to BMs from melanoma diagnosis was 2.3 years (8% had BMs at diagnosis). In 1st line BRAF(-) pts were treated with anti-PD-1 in 36%, chemotherapy - 46%, while BRAF(+) pts – with BRAFi/MEKi - 68% and anti-PD-1 - 5%. For the whole group median overall survival (mOS) of BRAF(+) was 7 months, while mOS BRAF(-) - 4 m. mOS for patients treated initially with BRAFi/MEKi was 9 m, while for anti-PD1 - 15 m (but it may be related to less advanced cases preferred for immunotherapy). BMs treatment modality chosen primarily was neurosurgery in 78 (21%) pts, radiotherapy - 270 (72%) with increasing use of stereotactic radiosurgery in recent years, only systemic treatment was offered to 25 (7%) pts. OS was highly affected by the number of BMs, LDH and albumin level and GPA (Graded Prognostic Assessment) scale (all p < 0.0001). mOS for pts with 1 BM was 10 months, for 2-3 – 7.4 m and for 4+ - 3.6 months. mOS was the longest for pts treated with local therapy (SRS/neurosurgery) combined with immunotherapy. We found significant improvement in OS for BM pts treated after 2013 (p < 0.0001) especially with GPA score 3 or 4 (p < 0.05) - 24-month OS rate 9% vs 28% for pts diagnosed since 2014.
Conclusions
The outcomes of patients with BMs is highly improved when local therapy (neurosurgery +/- SRS) is combined with modern systemic therapy. The introduction of new therapies significantly improved survival of melanoma pts with BMs.
Clinical trial identification
Editorial acknowledgement
Legal entity responsible for the study
Maria Sklodowska-Curie Institute - Oncology Center, Warsaw, Poland.
Funding
Has not received any funding.
Disclosure
I. Lugowska: Honoraria (self), Research grant / Funding (institution): Roche; Honoraria (self): BMS. H. Kosela-Paterczyk: Honoraria (self): Novartis; Honoraria (self): BMS.A.M. Czarnecka: Honoraria (self), Speaker Bureau / Expert testimony, Travel / Accommodation / Expenses: BMS; Honoraria (self), Speaker Bureau / Expert testimony, Travel / Accommodation / Expenses: Novartis. P. Rutkowski: Honoraria (self), Advisory / Consultancy, Speaker Bureau / Expert testimony, Research grant / Funding (institution): BMS; Honoraria (self), Advisory / Consultancy, Speaker Bureau / Expert testimony: MSD; Honoraria (self), Advisory / Consultancy, Speaker Bureau / Expert testimony, Research grant / Funding (institution): Novartis; Honoraria (self): Roche; Honoraria (self): Amgen; Speaker Bureau / Expert testimony: Eli Lilly; Advisory / Consultancy: Blueprint Medicines; Honoraria (self), Advisory / Consultancy, Speaker Bureau / Expert testimony: Pierre Fabre. All other authors have declared no conflicts of interest.
Resources from the same session
5529 - Safety and efficacy of Ac-225-PSMA-617 in metastatic castration resistant prostate cancer (mCRPC) after failure of Lu-177-PSMA
Presenter: Robert Tauber
Session: Poster Display session 3
Resources:
Abstract
3611 - Phase II trial of SM 88 in Non-Metastatic Biochemical Recurrent Prostate Cancer.
Presenter: Benjamin Gartrell
Session: Poster Display session 3
Resources:
Abstract
2492 - A phase 1 study of Ad5 PSA/MUC-1/Brachyury Vaccine in Patients with Metastatic Castration Resistant Prostate Cancer (mCRPC)
Presenter: Marijo Bilusic
Session: Poster Display session 3
Resources:
Abstract
3142 - Multicenter Phase I Trial of a DNA Vaccine Encoding the Androgen Receptor Ligand Binding Domain (pTVG-AR, MVI-118) in Patients with Metastatic Prostate Cancer
Presenter: Douglas McNeel
Session: Poster Display session 3
Resources:
Abstract
4327 - Impact of germline mutations in Homologous Recombination (HR) genes on the response to Radium-223 for metastatic castration resistant prostate cancer (mCRPC)
Presenter: Elena Castro
Session: Poster Display session 3
Resources:
Abstract
3600 - Serum biomarkers of bone metabolism in metastatic castration-resistant prostate cancer (mCRPC) patients (pts) treated with Radium-223 (Ra223): Results from a prospective multicentre study
Presenter: Nuria Romero Laorden
Session: Poster Display session 3
Resources:
Abstract
3742 - Prognostic value of tumor suppression genes (TP53, PTEN, Rb) in metastatic hormone sensitive prostate cancer
Presenter: Miguel Gonzalez Velez
Session: Poster Display session 3
Resources:
Abstract
2643 - Germline sequencing of advanced prostate cancer patients in the BARCODE2 trial
Presenter: Sarah Benafif
Session: Poster Display session 3
Resources:
Abstract
4349 - Impact of treatment sequence in patients (pts) with metastatic castration-resistant prostate cancer (mCRPC): data from the prospective PROREPAIR-B study.
Presenter: Carlo Cattrini
Session: Poster Display session 3
Resources:
Abstract
3301 - Implications of Single Nucleotide Polymorphisms (SNPs) in Androgen Related-Genes in Outcome of metastatic castration-resistant prostate cancer (mCRPC) patients treated with Abiraterone (Abi) and Enzalutamide (Enza)
Presenter: Isabel Aragon
Session: Poster Display session 3
Resources:
Abstract