K27M mutation in histone H3.3 defines clinically and biologically distinct subgroups of pediatric diffuse intrinsic pontine gliomas - Khuong-Quang, Dong-Anh; Lichter, Peter; Kool, Marcel; Deimling, Andreas von; Sturm, Dominik; Korshunov, Andrey; Jones, David T. W.; Pfister, Stefan (Acta neuropathologica, 2012)