...we selected patients diagnosed between 2015 and 2019 with stage IV non-squamous NSCLC and an ALK rearrangement, treated in first line with crizotinib or alectinib....Three-year overall survival was 50% (95% CI 43-57) and outcome was considerably better for patients treated with alectinib (67%, 95% CI 55-76) than for crizotinib (37%, 95% CI 28-46).