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Servier to acquire Day One for $2.5B

March 6, 2026

Good morning. Angus Chen, STAT's cancer reporter, here.

Metastasis is a turning point in cancer. For many diseases, the moment a satellite tumor takes hold in the body is when cancer is considered to be incurable, but scientists know relatively little about how metastasis happens. An in vitro study published in Nature on Wednesday suggests that activation of the glucocorticoid receptor in breast cancer cells might be a key step that these cancer cells take to avoid the immune system when metastasizing.

The work, led by Judith Agudo from Dana-Farber, seems to suggest that activation of this receptor downregulates a key cell death protein called FAS. This protein can signal T cells and get the immune system to essentially order the cell to kill itself. By taking away this protein, glucocorticoid receptor activation might help cancer cells survive better and evade immune killing.

This is really interesting work to me, since metastasis isn't well understood, and it helps to elucidate another piece of biology around the tenuous balance between the immune system and cancer. Getting to the heart of mechanisms that allow metastasis to occur might also be crucial to preventing patients from dying.

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