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Ref Type Journal Article
PMID (39001563)
Authors Turner JA, Van Gulick RJ, Robinson WA, Mughal T, Tobin RP, MacBeth ML, Holman B, Classon A, Bagby SM, Yacob BW, Hartman SJ, Silverman I, Vorwald VM, Gorden N, Gonzalez R, Gay LM, Ali SM, Benson A, Miller VA, Ross JS, Pitts TM, Rioth MJ, Lewis KD, Medina T, McCarter MD, Gonzalez R, Couts KL
Title Expanding the landscape of oncogenic drivers and treatment options in acral and mucosal melanomas by targeted genomic profiling.
Journal Vol Issue Date Pages Journal Short Title
International journal of cancer 2024 Jul 12 Int J Cancer
URL
Abstract Text Despite advancements in treating cutaneous melanoma, patients with acral and mucosal (A/M) melanomas still have limited therapeutic options and poor prognoses. We analyzed 156 melanomas (101 cutaneous, 28 acral, and 27 mucosal) using the Foundation One cancer-gene specific clinical testing platform and identified new, potentially targetable genomic alterations (GAs) in specific anatomic sites of A/M melanomas. Using novel pre-clinical models of A/M melanoma, we demonstrate that several GAs and corresponding oncogenic pathways associated with cutaneous melanomas are similarly targetable in A/M melanomas. Other alterations, including MYC and CRKL amplifications, were unique to A/M melanomas and susceptible to indirect targeting using the BRD4 inhibitor JQ1 or Src/ABL inhibitor dasatinib, respectively. We further identified new, actionable A/M-specific alterations, including an inactivating NF2 fusion in a mucosal melanoma responsive to dasatinib in vivo. Our study highlights new molecular differences between cutaneous and A/M melanomas, and across different anatomic sites within A/M, which may change clinical testing and treatment paradigms for these rare melanomas.

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