What if your cat held a key to fighting cancer? This discovery is surprising researchers – Futura, le média qui explore le monde

Mutations altered TP53, often called the guardian of the genome for its role in regulating cell division, in 33% of cat tumors studied. A separate analysis of human cancers found the same gene mutated in 34% of cases. The match is striking enough that researchers now speak of cat and human cancer not as parallel problems but as variations on the same biological challenge.
“We are no longer looking at these as separate problems, but as a shared biological challenge,” said Dr. Latasha Ludwig, co-first author and assistant clinical professor at Cornell University’s College of Veterinary Medicine.
The study identified 31 driver genes in total, mutations that actively push cells toward malignancy. Across blood, bone, lung, skin, digestive, and central nervous system cancers, the feline and human profiles repeatedly overlapped. Feline cutaneous squamous cell carcinoma showed UV induced genetic signatures nearly identical to those seen in certain human skin cancers. “That speaks to our shared environment,” Ludwig noted.
Most cancer genomics research uses mice as the animal model; cats offer something different. They develop cancer naturally, in the same homes and under the same environmental pressures as their owners. Dr. Bruce Kornreich, director of the Cornell Feline Health Center, pointed out that unlike laboratory mice, cats are exposed to the same domestic conditions as humans.  Researchers suspect that things like lifestyle factors, the air and cleaning products are contributing to cancer risk.
The most clinically actionable finding concerns mammary cancer. Researchers identified seven driver genes whose mutations trigger the disease in cats. Among them, FBXW7 was among the most frequently altered in feline mammary tumors. In humans, mutations in FBXW7 are associated with poor prognosis in breast cancer. Critically, laboratory tests on feline tumor cells showed that certain targeted chemotherapies were more effective against tumors carrying this mutation. A result that points toward treatment strategies that could apply across species, pending further studies.
The 493 tumor samples now form a freely accessible database for researchers worldwide. The project was led by the Wellcome Sanger Institute in Cambridge, England, with scientists from Cornell University, the Ontario Veterinary College at the University of Guelph, and the University of Bern. Senior author Dr. Louise Van Der Weyden called it one of the most significant advances in feline oncology to date: “The genetics of domestic cat tumors are no longer a ‘black box.’”
The study aligns with what researchers call the “One Medicine” approach. The idea that data flowing between veterinary and human medicine can accelerate progress for both. Dogs have been studied far more thoroughly than cats in this context; canine cancer genomics already informs clinical practice. Cats, the world’s second most popular companion animal, had been left largely uncharted. The same mutations and the same gene; the same body breaking down in recognizable ways. Not despite the shared life, but because of it.

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