Most breast cancer tumors in the brain carry gene changes drugs may target
Original title: Clinically actionable genomic alterations in breast cancer brain metastases.
How far along is this research?
- Lab cells
- Animals
- Review
- Tested in people
This was tested in people. That is the most reliable kind of research we share.
This was a look at stored tumor samples from people, not a test of a treatment.
The short version
Most of these brain tumors had gene changes that some drugs are already aimed at.
What was studied. Researchers studied 56 stored tumor samples. Each came from breast cancer that had spread to the brain. They read the genes in every sample and looked for changes that a drug might target.
What they found. A targetable gene change was found in 76.8% of the samples, that is 43 of them. The most common changes were in the BRCA1, BRCA2, or PALB2 genes, at 53.6%. Changes in the PIK3CA, AKT1, or PTEN genes showed up in 48.2% of the samples.
What this means, and what it doesn't
What it could mean: Gene testing of a brain tumor may point to drugs that fit that tumor. If breast cancer has spread to your brain, you could ask your doctor if gene testing makes sense for you.
What it doesn't mean: This does not mean a new treatment is ready for you. The study only read genes in stored tumor samples. No one was given a drug to see if it helped. Having a gene change does not mean a drug will work. This is not a promise of a cure.
Source: PubMed, September 11, 2026 · Read the original
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