What is the role of the BRAF gene in the pathophysiology of papillary thyroid carcinoma (PTC)?

Updated: Jun 18, 2020
  • Author: Ponnandai S Somasundar, MD, MPH, FACS; Chief Editor: Neetu Radhakrishnan, MD  more...
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Answer

Mutation in the BRAF gene resulting in the BRAF V60E protein is prominent in papillary thyroid carcinoma. A single-institution study by Mathur et al reported increasing rates of BRAF V600E mutations in papillary thyroid cancer from 1991 to 2005, suggesting that this may be contributing to the rise in thyroid cancer rates. [13] The BRAF V600E mutation is associated with aggressive clinicopathological characteristics of papillary thyroid carcinoma, including lymph node metastasis, extrathyroidal invasion, and loss of radioiodine avidity, which may lead to failure of radioiodine treatment and disease recurrence. [14, 15]


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