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Examples of three pilocytic astrocytomas with different types of MAPK alterations visible on the CNV plots. a Shows the by far most frequent focal low-level gain on Chr.7q representing a 7q34 tandem duplication of BRAF as part of the KIAA1549:BRAF gene fusion; b represents a rare fusion event with a focal loss of representing FAM131B:BRAF gene fusion; c represents a focal gain involving RAF1 as part of the SRGAP3:RAF1 gene fusion
