“Experimental in vitro and in vivo evidence, as well as results of clinical studies, have indicated that molecular targets for medications currently available for the treatment of mood disorders, sexually transmitted diseases, metabolic disorders, and diabetes may be active and relevant in thyroid cancer.
For instance, the derivatives of cannabis and an anti-diabetic agent, metformin, are both able to inhibit extracellular signal-regulated protein kinase (ERK), which is commonly activated in thyroid cancer cells.
We present here several examples of well-known medications that have the potential to become new therapeutics for patients with thyroid cancer. Repositioning of established medications for the treatment of thyroid cancer could broaden the scope of current therapeutic strategies. These diverse treatment choices could allow physicians to provide an individualized approach to optimize treatment for patients with thyroid cancer.”
http://www.ncbi.nlm.nih.gov/pubmed/24446492