This study focuses on patients with Small Cell Lung Cancer that has advanced after previous treatment with platinum-based chemotherapy. The research evaluates a combination of two medications: lurbinectedin (also known as PM01183) and atezolizumab (Tecentriq). Both medications are given through intravenous infusion, which means they are delivered directly into the bloodstream through a vein.
The purpose of this research is to determine if this combination of medications is safe and effective for treating advanced Small Cell Lung Cancer. The study is divided into two parts. The first part aims to find the right dose of the medications that can be safely given together. The second part evaluates how well the treatment works in fighting the cancer.
During the study, participants receive regular infusions of both medications. Their cancer is monitored through regular imaging tests every six weeks to check how the treatment is working. The study team tracks any side effects and how well patients respond to the treatment. Some patients may also provide blood and tissue samples to help researchers better understand how the medications work in the body.



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