Recurrent activating ACVR1 mutations in diffuse intrinsic pontine glioma
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Open Access
- 6 April 2014
- journal article
- research article
- Published by Springer Science and Business Media LLC in Nature Genetics
- Vol. 46 (5), 457-461
- https://doi.org/10.1038/ng.2925
Abstract
Chris Jones, Jacques Grill and colleagues report the identification of recurrent activating mutations in ACVR1 in diffuse intrinsic pontine gliomas. Diffuse intrinsic pontine gliomas (DIPGs) are highly infiltrative malignant glial neoplasms of the ventral pons that, due to their location within the brain, are unsuitable for surgical resection and consequently have a universally dismal clinical outcome. The median survival time is 9–12 months, with neither chemotherapeutic nor targeted agents showing substantial survival benefit in clinical trials in children with these tumors1. We report the identification of recurrent activating mutations in the ACVR1 gene, which encodes a type I activin receptor serine/threonine kinase, in 21% of DIPG samples. Strikingly, these somatic mutations (encoding p.Arg206His, p.Arg258Gly, p.Gly328Glu, p.Gly328Val, p.Gly328Trp and p.Gly356Asp substitutions) have not been reported previously in cancer but are identical to mutations found in the germ line of individuals with the congenital childhood developmental disorder fibrodysplasia ossificans progressiva (FOP)2 and have been shown to constitutively activate the BMP–TGF-β signaling pathway. These mutations represent new targets for therapeutic intervention in this otherwise incurable disease.Keywords
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