Suchorska B, et al. – Whether or not minimal time-to-peak (TTPmin) analysis provided prognostic information beyond the WHO classification, was examined in this study. Prognostically distinct sub–groups of IDH1/2 mutant/ 1p/19q–non–co–deleted gliomas were defined by 18F–FET–PET–derived dynamic analysis. These sub groups could not be distinguished as yet by molecular marker analysis.