Cancer Research

Cat Cancer Genetics Mirror Human Tumors and Could Unlock New Treatments

Scientists have conducted the largest genetic analysis of cat cancers ever attempted, examining tumors from nearly 500 domestic cats across five countries. Published in Science, the study found that many of the same cancer-driving gene mutations seen in humans also appear in feline tumors. A striking example: over 50% of aggressive cat mammary tumors carried mutations in FBXW7, a gene whose disruption in human breast cancer is linked to worse outcomes. Because cats share living environments with their owners — including exposure to household chemicals, smoke, and air pollutants — they offer a unique natural model for studying how genetics and environment combine to drive cancer. The freely available genetic database created from this work could accelerate drug development and precision treatment strategies for both cats and humans.