In the third case, where the interval spanned multiple decades, the GG was found to be positive for both BRAF p.V600E immunohistochemistry (IHC) and for the KIAA1549-BRAF fusion.
Our study shows that cellular polymorphism in PAs and gangliogliomas does not affect the results of molecular analysis investigating the status of the KIAA1549-BRAF fusion gene.
Activation of the MAP Kinase (MAPK) pathway caused by the BRAFV600E mutation or the KIAA1549-BRAF fusion has been reported in pediatric GG and PA, respectively.