Gene editing aimed at the faulty gene behind a childhood brain tumor
Original title: CRISPR-Mediated Targeting of BRAF Oncogenes in Pediatric Low-Grade Glioma
How far along is this research?
This is a preprint. Other scientists have not checked it yet, so treat it as an early signal rather than an answer.
This was only done on cells in a dish, not in people.
The short version
This was lab work on cells in a dish, not a test in children.
What was studied. Researchers built CRISPR gene editing tools to switch off a faulty BRAF: A gene in a pathway that tells cells to divide. Some tumors carry a change in it. There are drugs made to target that change, so your team may test for it. See the glossary gene. That gene drives the most common brain tumor in children. The tools were tested on human cancer cells grown in the lab, including glioma: A tumor that starts in the glial cells. Those are the support cells of the brain and spinal cord. Gliomas are given a grade from 1 to 4. The grade says how the tumor is expected to act. See the glossary cells taken from a patient.
What they found. The tools cut the target gene in a large share of cells. One tool worked in 66% of cells, and two others worked in 84% and 85%. A tool aimed at a single-letter gene change worked in about 57% of one cell type and about 74% of the patient glioma: A tumor that starts in the glial cells. Those are the support cells of the brain and spinal cord. Gliomas are given a grade from 1 to 4. The grade says how the tumor is expected to act. See the glossary cells. A lab test showed the faulty gene piece had been cut out.
What this means, and what it doesn't
What it could mean: The idea of a one-time gene fix for this tumor is worth studying further. Today's drugs for it must be taken every day and can cause harm over time. This work is a first step toward a different approach, nothing more.
What it doesn't mean: This does not mean a new treatment exists or is coming soon. The work was done only in cells in a dish. No child has been treated with it. It has not been tested in animals or in people. It is not a promise of a cure, and it is far from everyday care. Many years of testing would be needed first.
Source: bioRxiv (preprint), August 13, 2026 · Read the original
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