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SF3B1 Mutations Are Associated with Alternative Splicing in Uveal Melanoma

2013; American Association for Cancer Research; Volume: 3; Issue: 10 Linguagem: Inglês

10.1158/2159-8290.cd-13-0330

2159-8290

Simon J. Furney, Malin Pedersen, David Gentien, Amaury G. Dumont, Audrey Rapinat, Laurence Desjardins, Samra Turajlic, Sophie Piperno‐Neumann, Pierre de la Grange, Sergio Román-Román, Marc‐Henri Stern, Richard Marais,

Immunotherapy and Immune Responses

Uveal melanoma, the most common eye malignancy, causes severe visual morbidity and is fatal in approximately 50% of patients. Primary uveal melanoma can be cured by surgery or radiotherapy, but the metastatic disease is treatment refractory. To understand comprehensively uveal melanoma genetics, we conducted single-nucleotide polymorphism arrays and whole-genome sequencing on 12 primary uveal melanomas. We observed only approximately 2,000 predicted somatic single-nucleotide variants per tumor and low levels of aneuploidy. We did not observe an ultraviolet radiation DNA damage signature, but identified SF3B1 mutations in three samples and a further 15 mutations in an extension cohort of 105 samples. SF3B1 mutations were associated with good prognosis and were rarely coincident with BAP1 mutations. SF3B1 encodes a component of the spliceosome, and RNA sequencing revealed that SF3B1 mutations were associated with differential alternative splicing of protein coding genes, including ABCC5 and UQCC, and of the long noncoding RNA CRNDE.