This clinical trial is focused on studying a type of cancer known as Gastrointestinal Stromal Tumor (GIST), which is a rare cancer affecting the digestive tract. The study is specifically for patients whose cancer has spread to other parts of the body or is locally advanced, meaning it has grown significantly in its original location. The trial is testing the effectiveness of a medication called lenvatinib, which is taken in the form of hard capsules. Lenvatinib is a type of drug known as a tyrosine kinase inhibitor, which works by blocking certain proteins that promote cancer cell growth. The study will compare lenvatinib to a placebo, which is a substance with no active medication, to see how well it works in patients who have not responded to previous treatments with other drugs called imatinib and sunitinib.
The purpose of this study is to evaluate how well lenvatinib can control the growth of the cancer compared to a placebo. Participants in the study will be randomly assigned to receive either lenvatinib or the placebo. The study is designed to be double-blinded, meaning neither the participants nor the researchers will know who is receiving the actual medication and who is receiving the placebo. This helps ensure that the results are not influenced by expectations about the treatment. The trial will last for a period of time during which participants will take the medication and have regular check-ups to monitor their health and the progress of their cancer.
Throughout the study, the main focus will be on measuring how long patients can live without their cancer getting worse, which is known as progression-free survival. Other aspects being studied include overall survival, which is the length of time patients live after starting the trial, and the objective response rate, which measures how many patients experience a significant reduction in their cancer. The study will also assess the quality of life of participants and monitor any side effects they may experience. This information will help determine the potential benefits and risks of using lenvatinib for treating advanced GIST.



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