Brain Cancer Grade IV (Glioblastoma, most aggressive)
Reviewed by Oncology Team, VICI Healthcare | Last updated: 2026-04
What Grade IV (Glioblastoma, most aggressive) Means
Rapid growth, high mitotic rate, necrosis, microvascular proliferation. IDH-wildtype represents most common adult primary brain tumor; IDH-mutant form shows better prognosis.
Treatment Approach for Grade IV (Glioblastoma, most aggressive)
Maximal safe resection, followed by combined chemoradiation (Stupp protocol: concurrent TMZ 75 mg/m²/day during 60 Gy RT over 6 weeks, then 5 days/month TMZ for 6 months). Bevacizumab for recurrent disease. TTFields (Optune) in combination with TMZ for newly diagnosed glioblastoma shows survival benefit.
Survival Rates and Prognosis
The 5-year survival rate for brain cancer at Grade IV (Glioblastoma, most aggressive) is approximately Median overall survival 12–15 months with standard Stupp protocol; may reach 2 years with aggressive multimodal therapy. IDH-wildtype: ~14 months; IDH-mutant: ~24+ months.. Survival rates are statistical averages drawn from large patient populations and may not reflect your individual outcome. Factors that influence your specific prognosis include your age, overall health, tumour biology, and how well the cancer responds to treatment.
Important: These numbers are drawn from historical data. Newer treatments available today may improve outcomes beyond what published statistics show. Discuss your individual prognosis with your oncologist.
How Other Stages Compare
| Stage | 5-Year Survival | Treatment |
|---|---|---|
| Grade I (Benign) | 10–20 year overall survival post-resection if completely resected; radiation often deferred. | Surgery alone usually sufficient for completely resected tumors; radiation… |
| Grade II (Low-grade) | 5–15 year median overall survival depending on age, resection completeness, and molecular features; IDH-mutant tumors have better prognosis than IDH-wildtype. | Maximal safe resection. Observation vs. early adjuvant RT/chemotherapy debated;… |
| Grade III (High-grade/Anaplastic) | 2–5 year median overall survival depending on molecular profile and extent of resection; IDH mutations improve prognosis. | Maximal resection followed by external-beam RT (54–60 Gy) with concurrent and… |
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