This clinical trial is focused on studying a type of thyroid cancer known as RET-mutant medullary thyroid cancer. This is a specific form of thyroid cancer that is caused by changes in the RET gene. The study is comparing the effectiveness of a new treatment called Selpercatinib with two other existing treatments, Cabozantinib and Vandetanib. These treatments are known as kinase inhibitors, which are medications that can block certain proteins in cancer cells and may help to stop the cancer from growing.
The purpose of the study is to see how well Selpercatinib works compared to the other two treatments in patients who have not previously been treated with kinase inhibitors. Participants in the study will be randomly assigned to receive either Selpercatinib, Cabozantinib, or Vandetanib. The study will monitor the progress of the cancer and how it responds to the treatment over time. The treatments are taken orally, meaning they are swallowed in the form of a pill or capsule.
The study will take place over a period of time, and participants will have regular check-ups to monitor their health and the status of their cancer. The goal is to determine which treatment is most effective in slowing down or stopping the growth of the cancer. This information could help improve treatment options for people with RET-mutant medullary thyroid cancer in the future.



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