IDH1 mutation can be present in diffuse astrocytomas and giant cell glioblastomas of young children under 10 years of age.

Acta neuropathologica
2016
https://researcherprofiles.org/profile/1201062
27161253
Ferris SP, Goode B, Joseph NM, Kline CN, Samuel D, Gupta N, Bollen A, Perry A, Mueller S, Solomon DA