Different parts of the same brain tumor can act in different ways
Original title: Multi-region whole-genome and transcriptomic profiling uncovers plastic, subclone-linked cell states in high-grade diffuse astrocytomas
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 lab work on tumor tissue and on cells grown in a dish, not a treatment given to patients.
The short version
A lab study found that one brain tumor can behave in different ways in different spots, even when its DNA is much the same throughout.
What was studied. Researchers studied three high grade brain tumors that had not been treated yet. Two were glioblastomas. One was a grade 4 astrocytoma. They took samples from four separate areas of each tumor and looked closely at the DNA and at which genes the cells were using.
What they found. Most of the main DNA changes were found in all four areas of a tumor. That means those changes happened early and stayed the same. But which genes the cells were using varied a lot from area to area. Cells with the same DNA changes could act in different ways depending on what was around them.
What this means, and what it doesn't
What it could mean: This helps explain why one tumor can be hard to treat. One drug may work on one part of a tumor and not another. It also suggests that a single biopsy may catch the main DNA changes but miss how different parts of the tumor are behaving.
What it doesn't mean: This does not mean there is a new treatment. Nothing here was tested as a therapy, and no patient was given anything new. It was lab work on tissue from only three tumors, plus cells grown in a dish. It is very early science and it is far from everyday care. It is not a cure and it does not change how brain tumors are treated today.
Source: bioRxiv (preprint), August 11, 2026 · Read the original
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