This clinical trial is focused on studying a type of lung cancer called non-small cell lung cancer (NSCLC) that cannot be removed with surgery. The study is investigating the use of a medication called osimertinib, also known by its code name AZD9291. Osimertinib is being tested as a treatment given before and after chemotherapy and radiation therapy. The purpose of the study is to see if this approach is safe and effective for patients with this type of lung cancer.
Participants in the study will receive osimertinib as an initial treatment, known as induction therapy, before undergoing chemotherapy and radiation therapy. After these treatments, they will continue to take osimertinib as a maintenance therapy. The study will monitor the participants over a period of time to assess how well the treatment works and to check for any side effects. The study will also include a comparison with a placebo to evaluate the effectiveness of osimertinib.
The trial aims to gather information on how long patients live without their cancer getting worse, as well as other outcomes such as overall survival and response to treatment. The study will also look at the safety and tolerability of osimertinib by monitoring any adverse effects, changes in vital signs, and results from laboratory tests. This information will help determine if osimertinib is a beneficial treatment option for patients with unresectable NSCLC.



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