Cat tumor atlas reveals shared cancer genes with humans

October 4, 2026 at 03:23 PM2 min

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An international team analyzed tumors from nearly 500 domestic cats across five countries, producing the largest genetic atlas of feline cancers to date. The study identified driver mutations in genes such as FBXW7 that overlap with human and canine oncology, and showed some chemotherapy drugs were more effective against tumors with damaged FBXW7 in tissue experiments.

Key Facts

The study analyzed tumors from nearly 500 domestic cats across five countries, creating the largest genetic atlas of feline cancers to date.
More than half of aggressive feline mammary tumors carried mutations in the FBXW7 gene, which is also linked to more severe breast cancer in humans.
In tissue experiments, some chemotherapy drugs were more effective against tumors with damaged FBXW7, suggesting potential for targeted therapy.
The research was led by Geoffrey Wood of the University of Guelph and follows the One Medicine principle that human and veterinary medicine should advance together.

Genetic Atlas of Feline Cancer

An international team analyzed tumors from almost 500 domestic cats in five countries to build the most comprehensive genetic atlas of feline malignancies to date. Researchers searched tumor samples for driver mutations—genetic changes that directly push cells toward uncontrolled growth. Many key genes in cats matched those long known in human and canine oncology, including FBXW7, which normally helps destroy proteins that stimulate cell division. Damage to FBXW7 leads to accumulation of these proteins and may promote cancer growth, a pattern also seen in human breast cancer with more severe disease course.

Shared Cancer Pathways

Similarities were found in cancers of the blood, bones, lungs, skin, gastrointestinal tract, and central nervous system. Cats live alongside humans and are exposed to many of the same environmental factors, including household chemicals, polluted air, and tobacco smoke. Geoffrey Wood of the University of Guelph said the study helps explain why cancer develops in cats and humans, how the environment affects risk, and may lead to new prevention and treatment methods.

Drug Response Testing

The authors tested how tumor tissues with different mutations responded to chemotherapy drugs in laboratory experiments. Some drugs were more effective against tumors with damaged FBXW7, indicating potential for targeted therapy based on tumor genetics. The work follows the One Medicine principle that human and veterinary medicine should develop together.