This clinical trial is focused on studying a specific type of lung cancer known as advanced ALK-positive non-small cell lung cancer. The study is comparing two treatments: lorlatinib, which is also known by its code name PF-06463922, and crizotinib. Both of these are medications taken in tablet form. The purpose of the study is to determine if lorlatinib is more effective than crizotinib in delaying the progression of this type of lung cancer.
Participants in the study will be randomly assigned to receive either lorlatinib or crizotinib as their treatment. The study will monitor the participants over a period to see how the cancer responds to the treatment. This will help researchers understand which medication might be better at controlling the disease. Some participants will receive a placebo, which is a substance with no active medication, to help compare the effects of the actual treatments.
The study aims to provide valuable information about the effectiveness and safety of these treatments for patients who have not received prior treatment for their advanced lung cancer. By participating, individuals contribute to research that could improve future treatment options for this type of cancer. The study is expected to continue until the end of 2028.



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