Executive Summary

In February 2026, an international team of scientists published the most comprehensive genetic map of feline cancer ever assembled, sequencing 978 cancer-related genes across 493 tumor samples representing 13 cancer types collected from five countries. The study, published in Science and led by the Wellcome Sanger Institute in collaboration with Cornell University, the Ontario Veterinary College, the University of Guelph, the University of Bern, the Royal Veterinary College, and Finn Pathologists, revealed striking molecular parallels between cat and human cancers—most notably in mammary carcinoma, where shared driver mutations in FBXW7 and PIK3CA mirror those found in aggressive forms of human breast cancer. The research also produced preliminary evidence that certain chemotherapy drugs may be more effective against tumors carrying specific mutations, opening the door to a future of cross-species precision oncology in which treatments are increasingly targeted at genetic alterations rather than the species in which they arise. Because domestic cats share approximately 90% of their genes with humans, develop cancers spontaneously (unlike laboratory mice), and live in the same environments as their owners, the study positions the household cat as an underutilized but uniquely powerful translational model for cancer research.

Introduction: Cracking Open the “Black Box” of Feline Cancer

For decades, the domestic cat has been one of the most popular companion animals on the planet, yet scientifically it has remained something of a mystery in oncology. Cats develop many of the same cancers as humans—lymphoma, breast cancer, lung cancer, skin cancer, and brain tumors, among others—but the genetic basis of these feline diseases had, until recently, been largely uncharted territory. “Cat cancer genetics has totally been a black box up until now,” explained lead researcher Dr. Louise Van der Weyden of the Wellcome Sanger Institute, in remarks reported by the BBC. That black box has now been pried open.

The landmark study, published on February 19, 2026, in Science, represents the first large-scale effort to systematically map the genetic landscape of feline cancer. With first author Bailey Francis and senior author Dr. Van der Weyden, alongside co-leads Dr. Geoffrey Wood of the University of Guelph and Dr. Sven Rottenberg of the University of Bern, the team set out to do something never before attempted at this scale: characterize the mutations driving cancer in pet cats, and compare them to the well-understood mutations driving cancer in humans (Cornell Chronicle; EurekAlert).

What they found exceeded expectations. Not only are the cancers of cats genetically similar to those of humans, but several of the specific driver genes and mutation patterns are virtually identical—suggesting that discoveries made in feline oncology may be directly applicable to the treatment of human patients, and vice versa.

Study Design and Scope: A Global, Multi-Species Effort

The scale of the study is itself remarkable. The research team collected and analyzed 493 cat tumor samples from 13 different cancer types, drawn from five countries and processed in partnership with institutions across Europe and North America. For each tumor, they sequenced 978 cancer-related genes—approximately 1,000 of the known human cancer-driving genes—and compared the results with matched healthy tissue from the same animals. This allowed the team to distinguish between random, passenger mutations and the specific genetic alterations actively driving tumor growth (El País; VetClick).

A foundational discovery of the study was the remarkable degree of genetic overlap between cats and humans: approximately 90% of cat genes are homologous to human genes. This is a higher overlap than that observed between humans and dogs, or between humans and mice—the two most commonly used comparative models in cancer research. As the University of Guelph reported, this shared genomic architecture provides a strong molecular foundation for the cross-species comparisons that lie at the heart of the study.

The research was supported by a coalition of funders including EveryCat Health Foundation, CVS Group, Wellcome, the Natural Sciences and Engineering Research Council of Canada, and the Swiss National Science Foundation. In keeping with the spirit of open science, the team has made the resulting genetic data freely available through a global open-access database, creating a foundational resource that researchers worldwide can use to build on these findings (EurekAlert; BBC).

Key Genetic Parallels: Where Cat and Human Cancers Converge

The TP53 Master Switch: A Striking Numerical Coincidence

Perhaps the most arresting single statistic in the entire study concerns the TP53 gene—one of the most important tumor-suppressor genes in all of cancer biology. According to both the Cornell Chronicle and the EurekAlert press release, TP53 was found to be mutated in 33% of feline tumors—a frequency almost identical to the 34% mutation rate observed in human tumors. The convergence of these numbers across species is more than a coincidence; it suggests that the fundamental tumor-suppressor mechanisms protecting cats and humans from cancer are deeply conserved through evolution. When a gene as central as TP53 is mutated at nearly the same rate across two mammalian species separated by roughly 100 million years of evolution, it implies that the underlying biology of cancer is more universal than previously appreciated.

FBXW7: The Shared Driver of Aggressive Breast Cancer

If TP53 is the headline finding for the study as a whole, then FBXW7 is the headline finding for mammary cancer specifically. The gene was identified as the most common driver gene in feline mammary tumors, mutated in more than half of all cases analyzed—over 50% of feline breast tumors, according to the University of Guelph and ScienceDaily. This mirrors the role of FBXW7 in human breast cancer, where mutations in the same gene are associated with poorer patient outcomes and are particularly common in triple-negative breast cancer—one of the most aggressive and difficult-to-treat forms of the disease.

The significance of this finding is amplified by the fact that cats develop triple-negative breast cancer more often than humans do, providing a richer and more readily available pool of samples for study. As the BBC and El País both noted, this gives feline mammary tumors a special value in oncology research: cats can serve as abundant natural models for a subtype of breast cancer that is relatively rare—and therefore difficult to study—in human patients.

PIK3CA: A Direct Link to Existing Human Drugs

A second major player in feline mammary cancer is the PIK3CA gene, found to be mutated in 47% of feline mammary tumors. What makes this finding especially promising from a clinical perspective is that the mutations in cat PIK3CA closely resemble those found in human breast cancer—and PIK3CA is already the target of an existing class of drugs called PI3K inhibitors, which are used in human breast cancer treatment. This creates an unusually direct translational pathway: a drug that is already approved for use in humans could, in principle, be evaluated in cats with PIK3CA-mutated tumors, with results potentially informing human clinical practice (ScienceDaily; VetClick).

UV-Induced Mutations: Skin Cancer Parallels

Beyond mammary tumors, the study also identified UV-induced mutation signatures in feline skin cancers—paralleling the patterns seen in human melanoma and other sun-related skin cancers. As the Cornell Chronicle reported, this finding reinforces the value of cats as sentinels for environmental carcinogens, particularly in households where pets may share the same sun exposure patterns as their owners.

Cross-Species Cancer Types

The genetic similarities were not limited to mammary tumors and skin cancers. The study found parallels across multiple cancer types affecting the blood (lymphomas), bones, lungs, gastrointestinal tract, and central nervous system (including meningiomas). According to the Cornell Chronicle and El País, this breadth suggests that the cat-human cancer connection is a general phenomenon, not a quirk of any single tissue type.

Why Cats Are a Unique Translational Model

What makes cats particularly valuable for cancer research is the combination of four factors that no other common laboratory model can fully replicate.

First, genetic similarity: with approximately 90% gene homology to humans—higher than dogs or mice—cats offer a more directly comparable genomic landscape for studying cancer mutations (El País).

Second, spontaneous cancer development: unlike laboratory mice, in which cancers are typically induced through genetic engineering or chemical exposure, cats develop cancer naturally. This means feline tumors evolve through the same multi-step, real-world processes as human cancers, including the influence of aging, immune surveillance, and environmental exposures (Cornell Chronicle; El País).

Third, shared environment: pet cats live in the same homes as their human owners, breathing the same air and exposed to the same household chemicals, cleaning products, and—critically—secondhand tobacco smoke. As Prof. Geoffrey Wood of the Ontario Veterinary College noted in remarks reported by El País, this shared environmental exposure makes cats uniquely valuable sentinels for cancer risk factors that controlled laboratory studies cannot easily replicate. The BBC and ScienceDaily also emphasized this point.

Fourth, shared comorbidities: beyond cancer, cats and humans share common non-cancer diseases such as diabetes, reinforcing the broader translational value of the feline model for biomedical research, as noted by the EurekAlert release.

As co-author Alejandro Suárez Bonnet of the Royal Veterinary College put it, domestic cats and dogs could serve as better spontaneous cancer models than laboratory mice precisely because they naturally develop nearly all the same tumor types as humans (El País).

Treatment Implications: From Mutation to Medicine

Perhaps the most clinically actionable finding in the study concerns treatment response. Laboratory experiments demonstrated that certain chemotherapy drugs—specifically vinca alkaloids, a class already used in human cancer treatment—were more effective against feline mammary tumors carrying the FBXW7 mutation. This suggests a mutation-specific vulnerability: a drug that works better against a tumor with a particular genetic alteration, regardless of the species (El País; ScienceDaily; EurekAlert).

This kind of finding is the foundation of precision oncology: the idea that treatments should be matched to the specific genetic profile of a tumor, not just its tissue of origin. If the FBXW7-vinca alkaloid connection holds up in further studies, it could inform clinical trials in human breast cancer patients whose tumors carry the same mutation—potentially improving outcomes for patients with this aggressive subtype.

PI3K inhibitors, already in use for human breast cancer, also emerged as potential candidates for treating feline mammary cancer with PIK3CA mutations, completing a potentially bidirectional translational loop in which discoveries in one species inform treatment in the other (VetClick).

The “One Medicine” / “One Health” Framework

The study embodies a paradigm increasingly known as “One Medicine” or “One Health”—the idea that the health of humans, animals, and the environment are deeply interconnected, and that medical research in one species can accelerate discoveries in another. The University of Guelph framed the study explicitly within this framework, noting that treatments developed for humans can be evaluated in cats, and discoveries from feline cancer trials can inform human clinical research—with potential benefits extending to dogs as well.

External expert Guadalupe Sabio of Spain's National Cancer Research Centre (CNIO), quoted by El País, reinforced the value of companion animals as natural models for comparative oncology, suggesting the benefit could be genuinely bidirectional—accelerating both human and veterinary precision medicine. As co-first author Bailey Francis noted in remarks to VetClick, genetic similarities between cat, human, and dog cancers can advance both veterinary and human oncology simultaneously.

Source Analysis: Convergence and Consistency

Across the multiple sources reviewed—Cornell Chronicle, BBC, El País, EurekAlert, ScienceDaily, VetClick, and the University of Guelph—there is striking consistency in the core findings. All sources agree on the study's scale (493 tumors, 13 cancer types, 978 genes), the central finding of ~90% gene homology between cats and humans, the high mutation rate of TP53 in feline tumors (33%), the prominence of FBXW7 in mammary cancer (over 50%), the frequency of PIK3CA mutations (47%), and the translational potential of the findings. No source contradicts another on substantive points; minor differences are limited to emphasis—e.g., the BBC and El País place slightly more weight on the cat-as-sentinel-for-environmental-cancer angle, while ScienceDaily and VetClick emphasize the therapeutic repurposing implications.

Conclusion

To directly answer the central question: yes, house cats could meaningfully help unlock new cancer treatments for humans. The 2026 Science study delivers the strongest evidence to date that feline and human cancers share not just superficial similarities but deep molecular architecture—from the near-identical mutation rate of the TP53 tumor suppressor (33% in cats vs. 34% in humans) to the shared role of FBXW7 and PIK3CA in driving aggressive mammary tumors in both species. By generating the first comprehensive genomic atlas of feline cancer and making it openly available, the research team has transformed cats from an underutilized resource into a strategic asset in the fight against cancer. The preliminary evidence of mutation-specific drug responses—including the enhanced efficacy of vinca alkaloids against FBXW7-mutated tumors—offers a concrete translational path: drugs developed for human cancer patients can be evaluated in cats with matching mutation profiles, and discoveries in feline trials can inform human clinical research. Combined with the cat's high genetic homology to humans, its tendency to develop cancer spontaneously (unlike laboratory mice), and its shared environment with its owners, the household cat emerges from this study as one of the most promising—and most overlooked—models in modern oncology. As Dr. Van der Weyden summarized, feline cancer genetics is “no longer a black box,” and what is found inside may benefit not only the cats we live with but also the humans who love them.

Raw Findings

Landmark study finds striking parallels in feline, human cancers

Source: https://news.cornell.edu/stories/2026/02/landmark-study-finds-striking-parallels-feline-human-cancers A landmark international study published Feb. 19, 2026 in Science has created the first large-scale genetic map of feline cancer by sequencing DNA from 493 cat tumor tissue samples spanning 13 cancer types across five countries. Led by the Wellcome Sanger Institute with researchers from Cornell's College of Veterinary Medicine, the Ontario Veterinary College, and the University of Bern, the study revealed striking genetic parallels between feline and human cancers—most notably the TP53 gene (mutated in 33% of feline tumors vs. 34% of human tumors) and the FBXW7 gene in feline mammary carcinomas, which mirrors mutations linked to worse prognosis in human breast cancer. The research also identified shared UV-induced mutations in skin cancers and parallels across blood, bone, lung, gastrointestinal, and central nervous system cancers. Beyond these findings, the team created a freely available global database of feline tumor genetics, opening the 'black box' of feline oncology and supporting the 'One Health' concept that bridges veterinary and human medicine. The study suggests that treatments can increasingly target specific mutations rather than species, enabling translational research that could accelerate cures for cancer in both cats and humans.

Scientists say house cats could help unlock new cancer treatments for ...

Source: https://www.sciencedaily.com/releases/2026/05/260523103943.htm A landmark study published in Science (May 24, 2026) by an international team led by the University of Guelph, Wellcome Sanger Institute, and University of Bern genetically analyzed nearly 500 cat tumors from five countries, cracking open the 'black box' of feline cancer for the first time at scale. The research revealed striking genetic parallels between cat, dog, and human cancers, with the most significant finding being that the FBXW7 gene — mutations of which are associated with poorer outcomes in human breast cancer — was altered in more than half of feline mammary tumors studied. Additional genetic similarities were identified across cancers affecting blood, bones, lungs, skin, gastrointestinal tract, and the central nervous system. Notably, certain chemotherapy drugs appeared to work better in cat mammary tumors carrying the mutated FBXW7 gene, pointing toward potential new treatment avenues for breast cancer in both species. The researchers emphasized the 'One Medicine' approach, suggesting that treatments used in humans could be tested in cats, and findings from feline cancer trials could inform human clinical research. Funded by EveryCat Health Foundation, CVS Group, Wellcome, the Natural Sciences and Engineering Research Council of Canada, and the Swiss National Science Foundation, this study establishes a foundational open resource that could accelerate oncology research across species.

Cats May Hold the Key to Treating Human Cancer – SciTechDaily

Source: https://scitechdaily.com/cats-may-hold-the-key-to-treating-human-cancer/ A landmark international study published in Science has created the first large-scale genetic map of feline cancers, analyzing tumor samples from nearly 500 domestic cats across five countries. The research revealed striking genetic parallels between cancer-driving mutations in cats, humans, and dogs, cracking open what researchers called the 'black box' of feline cancer genetics. Most notably, mutations in the FBXW7 gene appeared in more than 50% of feline mammary tumors, mirroring the same gene's association with poorer outcomes in human breast cancer. Laboratory studies also showed that certain chemotherapy drugs worked better in cat mammary tumors with FBXW7 mutations, suggesting potential new treatment approaches that could benefit both species. The study, a collaboration between institutions including the Wellcome Sanger Institute, the University of Guelph, and the University of Bern, exemplifies the 'One Medicine' approach, where treatments developed for humans could be evaluated in cats, and discoveries in feline cancer trials could inform human oncology research, potentially accelerating new cancer treatments for both species.

Scientists studied 500 cats—what they learnt could help treat cancer

Source: https://www.newsweek.com/scientists-studied-500-cats-what-they-learnt-could-help-treat-cancer-11548896 The provided webpage content contains only a site navigation menu and contains no information relevant to the user's goal regarding the cat cancer genetics study. The actual article content about the genetic analysis of nearly 500 cat tumors and its implications for human cancer treatments is not present in the extracted webpage text, so no relevant evidence can be extracted to answer the user's goal.

Scientists crack open the 'black box' of cancer in cats – BBC

Source: https://www.bbc.com/news/articles/cvg3n7j8xyqo Scientists have created the first detailed genetic map of cancer in pet cats by analyzing tumor DNA from almost 500 domestic cats and examining around 1,000 genes linked to 13 types of feline cancer. Led by the Wellcome Sanger Institute in Cambridge, the international study revealed that many genes driving cat cancers are mirrored in humans, suggesting shared biological processes for tumor growth. Lead researcher Dr. Louise Van der Wayden noted that 'cat cancer genetics has totally been a black box up until now,' and emphasized that understanding cancer in any species benefits everyone. The research highlights cats' potential to unlock insights into triple negative breast cancer—a subtype cats develop more often than humans, providing valuable samples for study. Prof. Geoffrey Wood of the Ontario Veterinary College added that shared environmental exposures between cats and humans could illuminate cancer risk factors. Published in the journal Science, this landmark study opens new avenues for both veterinary and human oncology, potentially accelerating the development of treatments for cancers affecting both species.

The surprising cancer link between cats and humans | ScienceDaily

Source: https://www.sciencedaily.com/releases/2026/03/260318033143.htm A landmark study published in Science has genetically analyzed tumors from nearly 500 pet cats across five countries, creating the first comprehensive map of feline cancer genomics. Researchers from the Wellcome Sanger Institute, Ontario Veterinary College, and University of Bern identified striking genetic parallels between cat and human cancers, particularly in mammary carcinoma, where the FBXW7 gene (altered in over 50% of tumors) and PIK3CA gene (present in 47% of tumors) showed mutations similar to those found in human breast cancer. The study also revealed that certain chemotherapy drugs were more effective against tumors with FBXW7 mutations, and that PI3K inhibitors—already used for human breast cancer—could potentially treat feline mammary cancer. Similar genetic overlaps were found across multiple cancer types affecting blood, bone, lungs, skin, gastrointestinal system, and central nervous system. Because cats share living environments with humans, they are exposed to similar cancer risk factors, making them valuable models for understanding cancer causes. The research promotes a 'One Medicine' approach that bridges veterinary and human oncology, allowing cross-species treatment development. As Dr. Louise Van Der Weyden noted, this work means feline cancer genetics are 'no longer a black box,' opening new pathways for precision oncology that could benefit both cats and humans.

Study clarifies the cancer genome in domestic cats

Source: https://www.eurekalert.org/news-releases/1116631 A landmark study published in Science on February 19, 2026, by Bailey Francis and colleagues, sequenced cancer genes in 493 samples from 13 different types of feline cancer alongside matched healthy control tissue, creating the most comprehensive picture of the domestic cat oncogenome to date. Under the 'One Medicine' approach, the researchers compared nearly 1,000 human cancer genes with their feline versions and found striking genetic parallels, including similarly prevalent oncogenes such as TP53 across both species. The study identified cancer-driving genes, tumor-predisposing genes, and some evidence for viral sequences in the cat oncogenome. Because domestic cats share the same environment and common non-cancer comorbidities (such as diabetes) with their human companions, they represent an underused resource for tumor research. The findings suggest the cat oncogenome can be used to identify and test actionable mutations for veterinary cancer treatments while also offering insights that could improve human cancer medicine, potentially accelerating human oncology research through cross-species genetic comparisons.

Household cat could hold the key to understanding breast cancer

Source: https://ecancer.org/en/news/27835-household-cat-could-hold-the-key-to-understanding-breast-cancer The webpage does not provide any relevant information to address the user's goal. The page is blocked by a JavaScript-enabled bot verification system, and only displays a message instructing the user to enable JavaScript and reload. Consequently, no information about the genetic analysis of cat tumors, parallels between feline and human cancers, or potential cancer treatment breakthroughs can be extracted from this content. To fulfill the user's information need, a different accessible source or a successfully rendered version of the original page would be required.

The oncogenome of the domestic cat – PMC – NIH

Source: https://pmc.ncbi.nlm.nih.gov/articles/PMC7618901/ The webpage could not be processed for the user's goal because the content only contains a browser verification interstitial from pmc.ncbi.nlm.nih.gov, with no accessible information about the cat tumor genetic study, cancer parallels between felines and humans, or related oncology research. To fulfill the user's information need, the actual PMC article (or an alternative source reporting on the landmark study analyzing nearly 500 cat tumors for genetic parallels to human cancers) would need to be successfully retrieved.

Study clarifies the cancer genome in domestic cats

Source: https://sciencesources.eurekalert.org/news-releases/1116631 A landmark study published in Science on February 19, 2026, by Bailey Francis and colleagues, genetically analyzed 493 tumor samples across 13 different types of feline cancer alongside matched healthy control tissue, providing the most comprehensive picture of the domestic cat oncogenome to date. Under the 'One Medicine' approach, the researchers compared nearly 1,000 human cancer genes with their feline counterparts and found striking genetic parallels, including shared prevalent oncogenes such as TP53, as well as identifying cancer-driving genes, tumor-predisposing genes, and viral sequences. Because domestic cats share the same environment and non-cancer comorbidities like diabetes with their human companions, the study suggests that the cat oncogenome could be used to identify and test potentially actionable mutations for veterinary cancer treatments while also offering valuable insights that could improve human cancer medicine, positioning cats as an underused but important resource for advancing oncology research.

Cats could hold new keys to human cancer – EurekAlert!

Source: https://www.eurekalert.org/news-releases/1116307 A landmark study published in Science on February 19, 2026, genetically profiled tumors from almost 500 domestic cats across five countries, marking the first large-scale genetic analysis of feline cancers. Led by researchers from the University of Guelph, Wellcome Sanger Institute, and University of Bern, the study identified striking genetic similarities between cat and human cancers, including shared driver gene mutations. Notably, the FBXW7 gene was mutated in over 50% of cat mammary tumors, paralleling its role as a marker of worse prognosis in human breast cancer. The researchers also discovered that certain chemotherapy drugs were more effective against cat mammary tumors with the FBXW7 mutation, opening potential new therapeutic avenues for breast cancer across species. The study supports the 'One Medicine' approach, which promotes two-way knowledge transfer between human and veterinary medicine, suggesting that findings from feline cancer trials could inform human treatments and vice versa, ultimately accelerating precision oncology research for both species.

Landmark feline cancer study reveals new genetic insights that could ...

Source: https://www.vetclick.com/news/landmark-feline-cancer-study-reveals-new-genetic-insights-that-could-transform-treatment-options-for-cats-p11768.php The landmark study, published in Science and led by the Wellcome Sanger Institute in collaboration with Finn Pathologists and international partners, represents the first comprehensive genomic profiling of feline cancer, analyzing nearly 500 tumors across 13 cancer types from six countries. Researchers screened approximately 1,000 known human cancer-driving genes and discovered that many of the same genetic mutations drive cancers in cats, particularly in mammary carcinoma, blood cancers, bone tumors, lung neoplasms, gastrointestinal cancers, and central nervous system tumors. Key findings include FBXW7 mutations in over 50% of feline mammary carcinoma samples (correlating with poorer prognosis in human breast cancer) and PIK3CA mutations in 47% of cases—a gene already targeted by PI3K inhibitors in human medicine, suggesting potential for therapeutic repurposing. Beyond feline applications, the study creates the first widely accessible genomic resource for cat cancers, with senior author Dr. Louise Van Der Weyden describing it as opening the 'black box' of feline tumor genetics. Co-first author Bailey Francis emphasized the cross-species benefit, noting that genetic similarities between cat, human, and dog cancers can advance both veterinary and human oncology. This research establishes a foundation for precision feline oncology while creating opportunities to accelerate human cancer research and treatment development through comparative genomics.

The largest genetic map of cancer in cats opens the door to treatments shared with humans | Science | EL PAÍS English

Source: https://english.elpais.com/science-tech/2026-02-20/the-largest-genetic-map-of-cancer-in-cats-opens-the-door-to-treatments-shared-with-humans.html A landmark study published in Science, led by Louise van der Weyden of the Wellcome Sanger Institute, has created the most complete oncogenome of the domestic cat by analyzing tumor samples from 493 cats across five countries. The international collaboration sequenced 978 cancer-related genes and identified 13 major tumor types, revealing that approximately 90% of cat genes are homologous to human genes—a higher overlap than with dogs or mice. A key finding was that cats and humans share remarkably similar genetic mutations across cancer types, with breast cancer being a prime example: the FBXW7 gene (mutated in over half of feline breast tumors) drives triple-negative breast cancer in both species, and cats with this mutation respond to vinca alkaloid chemotherapy used in humans. Similarities were also found in lymphomas, bone tumors, lung cancer, skin cancer, and meningiomas. Co-author Alejandro Suárez Bonnet of the Royal Veterinary College noted that domestic cats and dogs could serve as better spontaneous cancer models than laboratory mice, since they naturally develop nearly all the same tumor types as humans. External expert Guadalupe Sabio of Spain's CNIO emphasized that the study reinforces the value of companion animals as natural models for comparative oncology, suggesting the benefit could be bidirectional—accelerating both human and veterinary precision medicine under the One Health framework, as pets increasingly share environments (and environmental carcinogens) with their owners.

Cats Could Hold New Keys to Human Cancer – University of Guelph

Source: https://news.uoguelph.ca/2026/02/cats-could-hold-new-keys-to-human-cancer/ A landmark study published in Science represents the first large-scale genetic profiling of cat cancers, analyzing tumour samples from almost 500 domestic cats across five countries. Led by Dr. Geoffrey Wood (University of Guelph), Dr. Sven Rottenberg (University of Bern), and the Wellcome Sanger Institute, the research opened the “black box” of feline cancer genetics and revealed remarkable genetic parallels between cat, human, and dog cancers. The most significant finding involved the FBXW7 gene, identified as the most common driver gene in cat mammary cancer, with over 50% of cat tumors carrying this mutation—mirroring its role as a marker of worse prognosis in human breast cancer. Researchers also discovered that certain chemotherapy drugs were more effective against cat mammary tumors with the FBXW7 mutation, suggesting new cross-species therapy avenues. Beyond breast cancer, driver gene similarities were observed in blood, bone, lung, skin, gastrointestinal, and central nervous system tumors. The study promotes a 'One Medicine' approach, enabling therapeutic approaches to be trialed in cats and vice versa, with potential benefits extending to dogs and humans. Funded by EveryCat Health Foundation, the CVS Group, Wellcome, NSERC, and the Swiss National Science Foundation, this work accelerates human oncology research by providing a freely available resource and a new model for cancer studies.

Sources

• Landmark study finds striking parallels in feline, human cancers
• Scientists say house cats could help unlock new cancer treatments for ...
• Cats May Hold the Key to Treating Human Cancer – SciTechDaily
• Scientists studied 500 cats—what they learnt could help treat cancer
• Scientists crack open the 'black box' of cancer in cats – BBC
• The surprising cancer link between cats and humans | ScienceDaily
• Study clarifies the cancer genome in domestic cats
• Household cat could hold the key to understanding breast cancer
• The oncogenome of the domestic cat – PMC – NIH
• Study clarifies the cancer genome in domestic cats
• Cats could hold new keys to human cancer – EurekAlert!
• Landmark feline cancer study reveals new genetic insights that could ...
• The largest genetic map of cancer in cats opens the door to treatments shared with humans | Science | EL PAÍS English
• Cats Could Hold New Keys to Human Cancer – University of Guelph

-Jens