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024 7 _ |a 0732-183X
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024 7 _ |a 1527-7755
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037 _ _ |a DKFZ-2019-02337
041 _ _ |a eng
082 _ _ |a 610
100 1 _ |a Menzer, Christian
|b 0
245 _ _ |a Targeted Therapy in Advanced Melanoma With Rare BRAF Mutations.
260 _ _ |a Alexandria, Va.
|c 2019
|b American Society of Clinical Oncology
336 7 _ |a article
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336 7 _ |a Journal Article
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500 _ _ |a 37(33):3142-3151
520 _ _ |a BRAF/MEK inhibition is a standard of care for patients with BRAF V600E/K-mutated metastatic melanoma. For patients with less frequent BRAF mutations, however, efficacy data are limited.In the current study, 103 patients with metastatic melanoma with rare, activating non-V600E/K BRAF mutations that were treated with either a BRAF inhibitor (BRAFi), MEK inhibitor (MEKi), or the combination were included. BRAF mutation, patient and disease characteristics, response, and survival data were analyzed.Fifty-eight patient tumors (56%) harbored a non-E/K V600 mutation, 38 (37%) a non-V600 mutation, and seven had both V600E and a rare BRAF mutation (7%). The most frequent mutations were V600R (43%; 44 of 103), L597P/Q/R/S (15%; 15 of 103), and K601E (11%; 11 of 103). Most patients had stage IV disease and 42% had elevated lactate dehydrogenase at BRAFi/MEKi initiation. Most patients received combined BRAFi/MEKi (58%) or BRAFi monotherapy (37%). Of the 58 patients with V600 mutations, overall response rate to BRAFi monotherapy and combination BRAFi/MEKi was 27% (six of 22) and 56% (20 of 36), respectively, whereas median progression-free survival (PFS) was 3.7 months and 8.0 months, respectively (P = .002). Of the 38 patients with non-V600 mutations, overall response rate was 0% (zero of 15) to BRAFi, 40% (two of five) to MEKi, and 28% (five of 18) to combination treatment, with a median PFS of 1.8 months versus 3.7 months versus 3.3 months, respectively. Multivariable analyses revealed superior survival (PFS and overall survival) with combination over monotherapy in rare V600 and non-V600 mutated melanoma.Patients with rare BRAF mutations can respond to targeted therapy, however, efficacy seems to be lower compared with V600E mutated melanoma. Combination BRAFi/MEKi seems to be the best regimen for both V600 and non-V600 mutations. Yet interpretation should be done with care because of the heterogeneity of patients with small sample sizes for some of the reported mutations.
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700 1 _ |a Menzies, Alexander M
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700 1 _ |a Carlino, Matteo S
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700 1 _ |a Reijers, Irene
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700 1 _ |a Groen, Emma J
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700 1 _ |a Eigentler, Thomas
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700 1 _ |a de Groot, Jan Willem B
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700 1 _ |a van der Veldt, Astrid A M
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700 1 _ |a Johnson, Douglas B
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700 1 _ |a Meiss, Frank
|b 9
700 1 _ |a Schlaak, Max
|b 10
700 1 _ |a Schilling, Bastian
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700 1 _ |a Westgeest, Hans M
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700 1 _ |a Gutzmer, Ralf
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700 1 _ |a Pföhler, Claudia
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700 1 _ |a Meier, Friedegund
|b 15
700 1 _ |a Zimmer, Lisa
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700 1 _ |a Suijkerbuijk, Karijn P M
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700 1 _ |a Haalck, Thomas
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700 1 _ |a Thoms, Kai-Martin
|b 19
700 1 _ |a Herbschleb, Karin
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700 1 _ |a Leichsenring, Jonas
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700 1 _ |a Menzer, Alexander
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700 1 _ |a Kopp-Schneider, Annette
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700 1 _ |a Long, Georgina V
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700 1 _ |a Kefford, Richard
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700 1 _ |a Enk, Alexander
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700 1 _ |a Blank, Christian U
|b 27
700 1 _ |a Hassel, Jessica C
|b 28
773 _ _ |a 10.1200/JCO.19.00489
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