This clinical trial is focused on studying a type of lung cancer known as Non-small Cell Lung Cancer (NSCLC) that has specific changes in the Epidermal Growth Factor Receptor (EGFR) gene. The study is comparing the effects of a new treatment called Patritumab Deruxtecan (also known by its code name U3-1402 or HER3-DXd) with standard chemotherapy treatments that use platinum-based drugs. These standard treatments include medications like Pemetrexed, Carboplatin, and Cisplatin. The purpose of the study is to see how well these treatments work in patients whose cancer has spread to other parts of the body or is locally advanced and has not responded to previous treatments targeting the EGFR gene.
Participants in the study will receive either the new treatment or one of the standard chemotherapy options. The new treatment, Patritumab Deruxtecan, is given as an infusion, which means it is administered directly into the bloodstream through a vein. The study will last for a period of up to 36 months, during which the effects of the treatments will be monitored. The main goal is to determine how long the cancer can be controlled without getting worse, which is known as progression-free survival. Other aspects, such as overall survival and the response of the cancer to the treatment, will also be evaluated.
This study is important for understanding how effective Patritumab Deruxtecan is compared to existing chemotherapy options for patients with EGFR-mutated NSCLC. By participating in this study, researchers hope to gather valuable information that could lead to better treatment options for this type of lung cancer in the future.



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