- Somatic histone H3 alterations in pediatric diffuse intrinsic pontine gliomas and non-brainstem glioblastomas.
Somatic histone H3 alterations in pediatric diffuse intrinsic pontine gliomas and non-brainstem glioblastomas.
Nature genetics (2012-01-31)
Gang Wu, Alberto Broniscer, Troy A McEachron, Charles Lu, Barbara S Paugh, Jared Becksfort, Chunxu Qu, Li Ding, Robert Huether, Matthew Parker, Junyuan Zhang, Amar Gajjar, Michael A Dyer, Charles G Mullighan, Richard J Gilbertson, Elaine R Mardis, Richard K Wilson, James R Downing, David W Ellison, Jinghui Zhang, Suzanne J Baker
PMID22286216
ABSTRACT
To identify somatic mutations in pediatric diffuse intrinsic pontine glioma (DIPG), we performed whole-genome sequencing of DNA from seven DIPGs and matched germline tissue and targeted sequencing of an additional 43 DIPGs and 36 non-brainstem pediatric glioblastomas (non-BS-PGs). We found that 78% of DIPGs and 22% of non-BS-PGs contained a mutation in H3F3A, encoding histone H3.3, or in the related HIST1H3B, encoding histone H3.1, that caused a p.Lys27Met amino acid substitution in each protein. An additional 14% of non-BS-PGs had somatic mutations in H3F3A causing a p.Gly34Arg alteration.
MATERIALS