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Key study of Grail's cancer detection test fails

February 20, 2026

Hello. Angus Chen, STAT's cancer reporter, here.

On Thursday, researchers published a genetic analysis of tumors in domestic cats in Science. Relatively little is known about cat cancer, and far more veterinary cancer research has focused on dogs. In the paper, the authors analyzed nearly 1000 feline tissue samples, half of which were tumor samples. That makes this paper the first large-scale analysis of feline tumors, and the authors argue that this work might eventually lead to insights that can benefit both cats and humans.

Research into cancer in other species, called comparative oncology, is really interesting to me. Famously, people have studied animals that seem to be protected from cancer, like naked mole rats or bowhead whales, and found novel mechanisms of cancer resistance. The NCI has a comparative oncology program, too, where people can enroll their pets into NCI-supported trials for new cancer treatments, and this program led to testing some of those platforms in humans.

Most of that has been done in dogs, but this paper might pave the way for similar work to come via feline studies. And, obviously, it'd be great if it led to new therapies for cats, too. Researchers submitted photos of their own cats along with the press release for this Science paper.


Courtesy Angus Chen

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