BRAF gene v600e mutation is a mutation in one of the loci of the BRAF gene i.e. v600e, suggesting a possible malignancy. 1.BRAF gene is located in human chromosome 7q34, encoding serine/threonine protein kinase in the MAPK pathway, which is involved in the regulation of a variety of biological events in the cell. v600E is a locus in the BRAF gene that is most prone to mutation, which is commonly found in colorectal cancer, malignant melanoma, thyroid cancer, lung cancer, hepatocellular carcinoma, pancreatic cancer and other tumor lesions. 2. v600e mutation in BRAF gene is currently suggestive of thyroid cancer, which can improve the diagnostic accuracy of malignant thyroid lesions. If there is any discomfort, consult a doctor in time, clarify the cause of the disease, and carry out the corresponding treatment methods under the guidance of the doctor.