BRAF (B-Raf Proto-Oncogene, Serine/Threonine Kinase): BRAF (B-Raf Proto-Oncogene, Serine/Threonine Kinase) is a vital protein involved in the MAPK/ERK signalling pathway, which regulates cell growth, division, and differentiation. Mutations in BRAF are associated with several cancers, including melanoma, thyroid, and colorectal cancer, as well as some non-cancerous conditions such as cardiofaciocutaneous syndrome, affecting the heart, facial features, and skin.