What is Gleolan?
Gleolan (5-aminolevulinic acid, or 5-ALA) is a medicine used to help surgeons see malignant tissue during an operation for certain brain tumors. It works by causing the tumor to fluoresce under specific blue light during surgery, which can help guide more complete tumor removal [1].
Which cancers and surgeries is it used for?
Gleolan is used for intraoperative fluorescence guidance in surgery for adult patients with malignant glioma (including glioblastoma) [1].
How is Gleolan taken and when is it given?
Gleolan is taken before surgery so it can produce tumor fluorescence at the time the surgeon needs to operate. The medicine is administered shortly before the procedure, and dosing timing is aligned with the planned operation [1].
What happens during surgery with Gleolan?
After Gleolan administration, the surgeon uses special lighting to view fluorescence in the surgical field. The goal is to help distinguish malignant tissue from surrounding brain tissue so the surgeon can remove as much tumor as possible while preserving function [1].
What side effects do patients ask about?
The most commonly reported side effects include reactions related to the drug and the procedure, such as nausea and vomiting, and sensitivity to light. Light sensitivity matters because the medication can make skin more sensitive to light for a period after dosing; patients are typically advised to follow light-protection instructions provided with the medicine [1].
Are there any important safety precautions?
Because Gleolan can cause light sensitivity, patients generally need to protect their skin and eyes from bright light after taking it, following the instructions given for their specific dosing and surgical schedule [1].
How does it compare with other tumor visualization tools?
Gleolan is specifically associated with fluorescence guidance using 5-ALA–induced tumor fluorescence. Other surgical tools for brain tumor guidance may include neuronavigation and intraoperative imaging, but Gleolan’s defining feature is fluorescence under blue light during the operation [1].
Where is Gleolan available and who makes it?
Gleolan is an established prescription product used in specific clinical settings for malignant glioma surgery, with information on manufacturer and regulatory status available through the official product labeling [1].
Sources
- https://www.ema.europa.eu/en/medicines/human/EPAR/gleolan