Glioblastoma Multiforme

What is Glioblastoma?

Glioblastoma (GBM), also known as glioblastoma multiforme, is the most common and aggressive brain tumor in adults. It grows quickly, spreads into surrounding brain tissue, and can be challenging to treat. While there is no cure, advances in treatment—such as surgery, radiation, and chemotherapy—can help manage the disease and improve quality of life.

How is Glioblastoma Classified?

Glioblastoma is classified as a Grade IV brain tumor, meaning it is highly aggressive. It can develop on its own (primary GBM) or evolve from a lower-grade brain tumor over time (secondary GBM).

Doctors now use molecular markers to help guide treatment, including:

• IDH mutations – Tumors with IDH1 mutations tend to grow more slowly.
• MGMT promoter methylation – Helps predict whether chemotherapy will be effective.
• EGFR amplification – Common in glioblastoma and may influence targeted treatments.

Understanding these markers helps doctors personalize treatment and improve outcomes.

Treatment Options for Glioblastoma

Glioblastoma treatment involves a combination approach to remove or shrink the tumor while preserving brain function.

Surgery

The first step in treating glioblastoma is often surgical removal of as much of the tumor as possible. The goal is to reduce pressure on the brain, relieve symptoms, and improve the effectiveness of other treatments.

New surgical techniques are helping doctors safely remove more tumor tissue while protecting critical brain functions:

• Fluorescence-Guided Surgery (5-ALA & Fluorescein) – Uses special dyes to help surgeons see tumor tissue more clearly.
• Intraoperative MRI & Ultrasound – Provides real-time imaging to guide surgery.
• Awake Craniotomy & Brain Mapping – Helps protect areas that control movement, speech, and vision.

Radiation Therapy

After surgery, radiation therapy targets remaining tumor cells to slow their growth. Specialized techniques include:

• Stereotactic Radiosurgery (SRS) – Focused radiation for small tumor areas.
• Brachytherapy (Targeted Radiation Implants) – Delivers radiation directly inside the tumor site.

Chemotherapy

The most common chemotherapy for glioblastoma is temozolomide (TMZ), often given along with radiation. This drug works best in patients with MGMT methylated tumors.

Targeted & Innovative Therapies

Researchers are developing new treatments to fight glioblastoma at the molecular level:

• Tumor Treating Fields (TTFields) – Uses electric fields to slow tumor growth.
• Bevacizumab (Avastin) – Blocks tumor blood vessel growth.
• Laser Interstitial Thermal Therapy (LITT) – A minimally invasive procedure using laser heat to destroy tumor cells.
• Immunotherapy & Cancer Vaccines – Still experimental, but being tested in clinical trials.

Emerging Treatments & Clinical Trials

Many new therapies are being studied, including:

• Personalized medicine – Targeting glioblastoma based on its genetic makeup.
• Drug delivery systems – New ways to bypass the blood-brain barrier.
• Liquid biopsy – A non-invasive test to monitor tumor changes over time.

Because glioblastoma is difficult to treat, clinical trials offer access to cutting-edge therapies that may provide better outcomes.

The Future of Glioblastoma Treatment

While glioblastoma remains a serious diagnosis, medical advancements are providing new hope. A multidisciplinary approach—combining expert surgery, precision radiation, targeted therapy, and emerging treatments—offers the best chance of managing the disease and improving quality of life.

If you or a loved one has been diagnosed with glioblastoma, our team is here to provide expert care and guide you through your treatment options.