A new lab method reads old stored tumor samples
Original title: FFPE-CUTAC: A Single Assay, Multiple Layers
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 is a lab method for studying stored tissue, not a treatment.
The short version
Scientists tested a lab method that still works on tumor samples stored for years.
What was studied. Researchers tested a lab method called FFPE-CUTAC. They used it on stored meningioma and breast cancer samples, some up to 25 years old.
What they found. The method held up on samples stored up to 25 years. Its quality did not drop as samples got older. An older method did worse on aged samples. The new method also matched full genome testing on gains and losses in chromosomes 96% of the time.
What this means, and what it doesn't
What it could mean: Hospitals keep old tumor samples in storage. This method may let scientists study those samples better. Over time, that could help them learn how tumors behave.
What it doesn't mean: This is not a treatment. It is a tool for the lab, not a test you can ask your doctor for. It does not change your care today. It is not a cure, and it does not promise one.
Source: bioRxiv (preprint), September 22, 2026 · Read the original
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