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Krebs, Fanny Seraphine; Moura, Bianca; Missiaglia, Edoardo; Aedo-Lopez, Veronica; Michielin, Olivier; Tsantoulis, Petros; Bisig, Bettina; Trimech, Mounir; Zoete, Vincent; Homicsko, Krisztian
International journal of molecular sciences, 03/2023, Letnik: 24, Številka: 5Journal Article
The development of targeted therapies for non- p.Val600-mutant melanomas remains a challenge. Triple wildtype (TWT) melanomas that lack mutations in , , or form 10% of human melanomas and are heterogeneous in their genomic drivers. mutations are enriched in -mutant melanoma and function as an innate or adaptive resistance mechanism to BRAF inhibition. Here we report the case of a patient with TWT melanoma with a bona fide mutation without any mutations. We performed a structural analysis to validate that the MEK inhibitor trametinib could block this mutation. Although the patient initially responded to trametinib, he eventually progressed. The presence of a deletion prompted us to combine a CDK4/6 inhibitor, palbociclib, with trametinib but without clinical benefit. Genomic analysis at progression showed multiple novel copy number alterations. Our case illustrates the challenges of combining MEK1 and CDK4/6 inhibitors in case of resistance to MEK inhibitor monotherapy.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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