Postoperative oscillatory brain activity as an add-on prognostic marker in diffuse glioma

Vera Belgers, Tianne Numan, Shanna D. Kulik, Arjan Hillebrand, Philip C. de Witt Hamer, Jeroen J.G. Geurts, Jaap C. Reijneveld, Pieter Wesseling, Martin Klein, Jolanda Derks, Linda Douw

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Introduction: Progression-free survival (PFS) in glioma patients varies widely, even when stratifying for known predictors (i.e. age, molecular tumor subtype, presence of epilepsy, tumor grade and Karnofsky performance status). Neuronal activity has been shown to accelerate tumor growth in an animal model, suggesting that brain activity may be valuable as a PFS predictor. We investigated whether postoperative oscillatory brain activity, assessed by resting-state magnetoencephalography is of additional value when predicting PFS in glioma patients. Methods: We included 27 patients with grade II–IV gliomas. Each patient’s oscillatory brain activity was estimated by calculating broadband power (0.5–48 Hz) in 56 epochs of 3.27 s and averaged over 78 cortical regions of the Automated Anatomical Labeling atlas. Cox proportional hazard analysis was performed to test the predictive value of broadband power towards PFS, adjusting for known predictors by backward elimination. Results: Higher broadband power predicted shorter PFS after adjusting for known prognostic factors (n = 27; HR 2.56 (95% confidence interval (CI) 1.15–5.70); p = 0.022). Post-hoc univariate analysis showed that higher broadband power also predicted shorter overall survival (OS; n = 38; HR 1.88 (95% CI 1.00–3.54); p = 0.038). Conclusions: Our findings suggest that postoperative broadband power is of additional value in predicting PFS beyond already known predictors.

Original languageEnglish
Pages (from-to)49-58
Number of pages10
JournalJournal of Neuro-Oncology
Issue number1
Publication statusPublished - 1 Mar 2020
Externally publishedYes


  • Beamforming
  • Glioma
  • Magnetoencephalography (MEG)
  • Overall survival
  • Progression-free survival


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