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Diffuse Hemispheric Glioma H3 G34 Mutant C5669880

Published: July 22, 2026Updated: August 20, 2026

A malignant brain tumor that develops in the cerebral hemispheres, more common in adolescents and young adults. Treatment involves surgery, radiation, and chemotherapy, though outcomes are generally poor.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 20, 2026Editorial policy

Key facts at a glance

ICD-10
C80.1
ICD-11
2A00.0
Body system
oncologic
Severity
fatal
Chronic
false

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Warning signs - seek immediate care

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Generalized symptoms

Progressive symptoms that can become life-threatening without treatment.

Seek immediate medical attention if symptoms worsen.

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Headache

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Seizures

!

Hemiparesis

Personality changes

(neurologic)

Diagnosis and tests

How this condition is diagnosed and what test results mean.

Initial screening tests

1

Standard diagnostic workup

Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]

Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]

Treatment options

Evidence-based approaches to managing this condition.

First-line treatments

1

Outpatient procedure with monitoring

Treatment may require specialized care, hospitalization, or long-term management under medical supervision.

procedure
2

Surgical Debulking

Aggressive but careful surgical removal of hemispheric tumor mass to reduce symptom burden and improve effectiveness of adjuvant therapies. Neuro-navigation and intraoperative mapping guide resection.

surgical
3

Intensity-Modulated Radiation Therapy

Precision radiation targeting the tumor region with enhanced sparing of surrounding healthy brain tissue. Sophisticated planning accounts for tumor location within the cerebral hemispheres.

procedure

Additional treatment options

Molecularly-Targeted Therapy

Use of agents targeting specific genetic alterations in H3 G34 mutant gliomas. Treatment selection guided by molecular profiling of the tumor tissue.

medication

Clinical Trial Enrollment

Participation in investigational studies evaluating novel therapeutic approaches including immunotherapy, targeted agents, and innovative combination strategies specific to H3-mutant gliomas.

complementary

Neuropsychological Support

Cognitive assessment and intervention to address memory, attention, and executive function changes. Provides coping strategies and educational support for patients and families.

psychological

When to seek medical help

Recognize when you need immediate medical attention.

Call emergency services (911) immediately

!

Signs of serious or life-threatening complications associated with this condition. Immediate medical evaluation is required.

Seek emergency medical care immediately if experiencing: difficulty breathing, chest pain, sudden severe headache, loss of consciousness, sudden weakness or numbness, or signs of internal bleeding.

Frequently asked questions

Common questions about this topic.

Q

What is Diffuse Hemispheric Glioma H3 G34 Mutant C5669880?

Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]

general

Sources and references

Authoritative medical sources used to create this content.

1

Sturm D, Witt H, Hovestadt V, et al. Hotspot mutations in H3F3A and IDH1 define distinct epigenetic and biological subgroups of glioblastoma. Cancer Cell. 2012.

review2012
2

Louis DN, Perry A, Wesseling P, et al. The 2021 WHO Classification of Tumors of the Central Nervous System: a summary. Neuro-Oncology. 2021.

guideline2021
3

Korshunov A, Chavez L, Sharma T, et al. H3-/IDH-wild type pediatric glioblastoma is comprised of molecularly more favorable entities compared to patient-matched, conventional control samples. Acta Neuropathologica. 2021.

other2021
4

Huang TY, Piunti A, Shilati BH, et al. Hemispheric hemispheric glioma H3 G34 mutant: clinical, pathological and molecular characteristics. Neuropathology. 2023.

review2023

Medication Comparisons

Compare medications used to treat Diffuse Hemispheric Glioma H3 G34 Mutant C5669880. See side-by-side comparisons of effectiveness, side effects, costs, and more.

View Medication Comparisons

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy