Prognostic utility of tumor grade and IDH-mutation status for immunotherapy response in high grade glioma: a systematic review and meta-analysis.

J Clin NeurosciJul 20, 2026 (epub)

Srivats Srinivasan, Mohammad Mirahmadi Eraghi, Peace Odiase et al.

✦ AI-curated · Sources linked

In 30 seconds

This systematic review and meta-analysis evaluated the prognostic value of tumor grade and IDH-mutation status in high-grade gliomas treated with immunotherapy. It included 21 studies with 207 patients having grade III gliomas and 11 studies with 115 IDH-mutant gliomas. Newly diagnosed IDH-mutant gliomas showed significantly better overall survival (43.13 months) compared to recurrent IDH-mutant gliomas (19.57 months, p=0.005).

Key findings

  • Overall survival for recurrent and newly diagnosed grade III gliomas was not significantly different (21.90 vs 29.71 months, p=0.237).
  • Newly diagnosed IDH-mutant gliomas had significantly lower 5-year mortality compared to recurrent cases (10.26% vs 59.78%, p<0.001).
  • Dendritic cell and peptide vaccines improved overall survival in IDH-mutant gliomas compared to other immunotherapy agents (p=0.002).

Why it matters

Understanding the impact of tumor grade and IDH status on immunotherapy outcomes can guide treatment decisions and patient counseling in high-grade glioma management. This study highlights the need for tailored approaches based on tumor characteristics.

What to keep in mind

The study is limited by the predominance of single-arm studies and small sample sizes, which may confound the results.

Source

Published in J Clin Neurosci. This summary was written by xxcode from the publication's abstract and metadata. It is not peer reviewed and is not a substitute for the original article. For clinical decisions, review the original publication.

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AI-generated summaries may contain errors or omissions. Verify clinically important information with the original publication.

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