Testing for BRAF fusions in patients with advanced BRAF / NRAS / KIT wild-type melanomas permits to identify patients who could benefit of anti-MEK targeted therapy.

Autor:	Le Flahec G; Department of Pathology, CHRU Brest, Brest, France., Briolais M; Department of Pathology, CHRU Brest, Brest, France., Guibourg B; Department of Pathology, CHRU Brest, Brest, France., Lemasson G; Department of Pathology, CHRU Brest, Brest, France., Grippari JL; Department of Pathology, CHRU Brest, Brest, France., Ledé F; Department of Pathology, CHRU Brest, Brest, France., Marcorelles P; Department of Pathology, CHRU Brest, Brest, France., Uguen A; Department of Pathology, CHRU Brest, Brest, France arnaud.uguen@chu-brest.fr.
Jazyk:	angličtina
Zdroj:	Journal of clinical pathology [J Clin Pathol] 2020 Feb; Vol. 73 (2), pp. 116-119. Date of Electronic Publication: 2019 Sep 10.
DOI:	10.1136/jclinpath-2019-206026
Abstrakt:	Beyond targeted therapy for patients with BRAF -mutated melanomas and immunotherapy in patients lacking BRAF mutations, anti-MEK therapy has been proposed in patients with advanced melanomas harbouring BRAF fusions. BRAF fusions diagnosis in patients with advanced melanomas is the subject of the present study. Using BRAF fluorescent in situ hybridisation (FISH), we searched for BRAF fusions in 74 samples of 66 patients with advanced BRAF / NRAS / KIT wild-type melanomas. We identified 2/66 (3%) patients with BRAF fusions in a brain metastasis of one patient and in a lymph node metastasis and in a cutaneous metastasis for the second patient with 90%-95% of tumour nuclei containing isolated 3'- BRAF FISH signals. As a result, we conclude that BRAF FISH in patients with advanced BRAF / NRAS / KIT wild-type melanomas is a valuable and easy-to-perform test to diagnose BRAF fusions and to identify patients who could benefit of anti-MEK targeted therapy. Competing Interests: Competing interests: None declared. (© Author(s) (or their employer(s)) 2020. No commercial re-use. See rights and permissions. Published by BMJ.)
Databáze:	MEDLINE
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