BRAF Mutation Test in Dogs

Urothelial carcinoma (UC – formerly known as Transitional cell carcinoma) is the most common malignant tumour of the canine urinary tract.

DNA sequencing of UC/TCC tumour cells identified a mutation of BRAF gene V595E in approximately 80% of cases depending on the study.

Indications

BRAF mutation analysis is recommended when cytology or histology are unable to provide a definitive diagnosis due to one of the following reasons:

• mild signs of cellular atypia, especially if associated with inflammation
• poor cell preservation
• very thick smears
• histological biopsies with artefacts

REFERENCES

1. Grassinger, J., Merz, S., Aupperle-Lellbach, H., Erhard, H. and Klopfleisch, R. (2019). Correlation of BRAF Variant V595E, Breed, Histological Grade and Cyclooxygenase-2 Expression in Canine Transitional Cell Carcinomas. Veterinary Sciences, 6(1), p.31. DOWNLOAD
2. Gedon J, Kehl A, Aupperle-Lellbach H, von Bomhard W, Schmidt JM. BRAF mutation status and its prognostic significance in 79 canine urothelial carcinomas: A retrospective study (2006–2019). Vet Comp Oncol. 2021;1-9. doi:10.1111/vco.12790
3. Wong, K., Abascal, F., Ludwig, L., Aupperle‐Lellbach, H., Grassinger, J.M., Wright, C.W., Allison, S.J., Pinder, E., Phillips, R.M., Romero, L., Gal, A., Roady, P.J., Pires, I., Franco Guscetti, Munday, J.S., Peleteiro, M.C., Pinto, C., Carvalho, T., João Bettencourt Cota and Elizabeth (2023). Cross-species oncogenomics offers insight into human muscle-invasive bladder cancer. Genome Biology, 24(1). DOWNLOAD
4. Küchler, L., Posthaus, C., Jãger, K., Franco Guscetti, Louise, Wolf von Bomhard, Schmidt, J.M., Farra, D., Aupperle‐Lellbach, H., Kehl, A., Rottenberg, S. and Simone de Brot (2023). Artificial Intelligence to Predict the BRAF V595E Mutation in Canine Urinary Bladder Urothelial Carcinomas. Animals, 13(15), pp.2404–2404. DOWNLOAD‌