This clinical trial is focused on studying a type of lung cancer known as Limited-Stage Small Cell Lung Cancer (LS-SCLC). The study is investigating the effects of a combination of treatments, including Pembrolizumab (also known by its code name MK-3475), Olaparib (code name MK-7339), and standard chemoradiation therapy. Pembrolizumab is a medication that helps the immune system fight cancer, while Olaparib is a drug that targets cancer cells with specific genetic defects. The trial will also include a placebo group to compare the effectiveness of these treatments.
The purpose of the study is to evaluate how well these treatments work together in improving the survival of patients with LS-SCLC. Participants will receive either the combination of Pembrolizumab and Olaparib with chemoradiation therapy or chemoradiation therapy alone. The study will monitor the progression of the disease and overall survival rates. The trial will also assess the safety of the treatments by tracking any side effects experienced by participants.
Participants in the study will undergo regular assessments, including imaging tests like MRI or CT scans, to monitor the cancer’s response to treatment. The study will last for a period of time, during which participants will receive the assigned treatments and attend follow-up visits to evaluate their health and the effectiveness of the therapy. The goal is to determine if the combination of Pembrolizumab and Olaparib can provide better outcomes for patients with LS-SCLC compared to standard treatment alone.



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