Peters Peters S S Alectinib versus crizotinib in untreated ALK-positive non-small-cell lung cancer Alectinib versus crizotinib in untreated ALK-positive non-small-cell lung cancer N Engl J Med N Engl J Med 2017 2017 377 377 829 829 838 838 28586279 28586279. This evidence concerns the gene ALK and non-small cell lung carcinoma.