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PMID (32922664)
Authors Torresetti M, Brancorsini D, Morgese F, Cognigni V, Scalise A, Berardi R, Di Benedetto G
Title A case report of metastatic giant sarcomatoid melanoma with BRAF V600E mutation: a complete response to targeted therapy.
Journal Oncotarget
Vol 11
Issue 34
Date 2020 Aug 25
URL
Abstract Text Sarcomatoid melanoma is an extremely rare pattern of malignant melanoma, and only few cases have been described throughout the literature. We herein report a case of a patient with newly diagnosed, metastatic giant sarcomatoid melanoma of the arm. The patient underwent surgical removal of the huge mass, and NGS sequencing demonstrated BRAF V600E mutation. In view of histological, immunohistochemical and molecular findings, a combined BRAF/MEK inhibitor (BRAF/MEK-i) therapy was prescribed as first line treatment. A complete response (over one year) to targeted therapy was obtained, and no adverse events have been reported. The patient maintained a full range of shoulder and elbow movements, and she is able to live independently and resume her daily activities. We therefore recommend that all patients with undifferentiated melanomas, sarcomatoid cutaneous malignancies or other mesenchymal tumours, should undergo BRAFV600E mutation testing.

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Molecular Profile Treatment Approach
Gene Name Source Synonyms Protein Domains Gene Description Gene Role
Therapy Name Drugs Efficacy Evidence Clinical Trials
Drug Name Trade Name Synonyms Drug Classes Drug Description
Gene Variant Impact Protein Effect Variant Description Associated with drug Resistance
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
BRAF V600E CDKN2A R80* skin melanoma predicted - sensitive Dabrafenib + Trametinib Case Reports/Case Series Actionable In a clinical case study, a patient with metastatic giant sarcomatoid melanoma harboring BRAF V600E and CDKN2A R80* achieved a partial response following four months of treatment with the combination of Tafinlar (dabrafenib) and Mekinist (trametinib), and reached a complete response with regression of lung and bone metastases after one year of treatment (PMID: 32922664). 32922664