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Jansen, Philipp; Cosgarea, Ioana; Murali, Rajmohan; Möller, Inga; Sucker, Antje; Franklin, Cindy; Paschen, Annette; Zaremba, Anne; Brinker, Titus J; Stoffels, Ingo; Schadendorf, Dirk; Klode, Joachim; Hadaschik, Eva; Griewank, Klaus G
Cancers, 04/2019, Letnik: 11, Številka: 4Journal Article
Acral naevi are benign melanocytic tumors occurring at acral sites. Occasionally they can progress to become malignant tumors (melanomas). The genetics of acral naevi have not been assessed in larger studies. In our study, a large cohort of 130 acral naevi was screened for gene mutations known to be important in other naevi and melanoma subtypes by targeted next-generation sequencing. Mutation status was correlated with clinicopathological parameters. Frequent mutations in genes activating the MAP kinase pathway were identified, including = 87 (67%) , = 24 (18%) , and one (1%) mutations. mutations were almost exclusively V600E ( = 86, 99%) and primarily found in junctional and compound naevi. mutations were either Q61K or Q61R and frequently identified in dermal naevi. Recurrent non-V600E , , , and promoter mutations, present in acral melanoma, were not identified. Our study identifies and mutations as the primary pathogenic event in acral naevi, however, distributed differently to those in non-acral naevi. The mutational profile of acral naevi is distinct from acral melanoma, which may be of diagnostic value in distinguishing these entities.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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