A protein called CPA4 helps some meningiomas grow
Original title: YAP-TEAD-driven CPA4 promotes NF2-deficient meningioma growth
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 done in tumor cells and in animals, not in people with this tumor.
The short version
Scientists found a protein that helps certain meningioma tumors grow, and blocking it slowed those tumors in lab and animal tests.
What was studied. Researchers studied meningiomas that have lost a gene called NF2. They looked at tumor samples from patients, then tested tumor cells and tumors grown in animals.
What they found. A protein called CPA4 was turned up in meningiomas with NF2 changes and with a missing piece of chromosome 22. Higher CPA4 went along with higher tumor grade. When the researchers lowered CPA4, tumor cells stopped growing well, tumors in the brain grew less, and the animals lived longer. Two drugs that block the YAP-TEAD signal, verteporfin and VT3989, lowered CPA4, slowed tumor growth, and also helped the animals live longer.
What this means, and what it doesn't
What it could mean: This points to a possible new target for treating meningiomas that have NF2 changes. It also suggests CPA4 might one day help doctors tell which tumors would respond to this kind of drug. For now it is a lead for researchers, not a treatment you can ask for.
What it doesn't mean: This does not mean a new meningioma treatment is here. The work was done in tumor cells and in animals, not in a trial in people with meningioma. Results in animals often do not hold up in people. One of the drugs is being studied in people for other reasons, but that is not the same as being proven or approved for meningioma. This is early research. It is not a cure.
Source: bioRxiv (preprint), August 7, 2026 · Read the original
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