Abstract
Medullary Thyroid Carcinoma (MTC) is a rare neuroendocrine cancer that accounts
for 1–2% of thyroid cancers in the United States (U.S.). While
most cases are sporadic, 25% of MTC cases are hereditary. These
hereditary cases occur in the setting of Multiple Endocrine Neoplasia Type 2A
(MEN2A) or 2B (MEN2B) driven by mutations in the Rearranged during
Transfection RET proto-oncogene. This article discusses hereditary MTC
in the setting of MEN2 and the treatment options available for it. The first
line treatment for this disease is typically a total thyroidectomy and tyrosine
kinase inhibitors. Two tyrosine kinase inhibitors, vandetanib and cabozantinib,
have been approved for treatment of advanced MTC, but options beyond those are
limited. However, several promising treatments are being studied, which are
discussed in this review.
Key words
metastatic MTC - calcitonin - tyrosine kinase inhibitors - clinical trials