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A newer ALK drug that gets into the brain beat the original one, and did it with fewer side effects. ALEX is why nobody starts an ALK-positive patient on crizotinib any more.
The ALEX trial investigators, reported by Peters, Camidge, Shaw and colleagues, randomised 303 patients with previously untreated advanced ALK-positive non-small-cell lung cancer, including those with asymptomatic central nervous system disease, to alectinib 600 mg twice daily or crizotinib 250 mg twice daily. The primary endpoint was investigator-assessed progression-free survival; time to central nervous system progression was a secondary endpoint.
The design deliberately admitted patients with brain metastases rather than excluding them, which is why the trial could show what the next generation of ALK inhibitors was actually for. It is the pattern later followed by CROWN with lorlatinib.
First-line ALK treatment moved to a drug designed for the brain, and brain metastasis prevention became an explicit design goal rather than a hoped-for side effect. ALK-positive lung cancer is now among the longest-surviving metastatic solid tumours.
Adjuvant treatment for lung cancer is now chosen by genotype. A resected ALK-positive tumour is treated with two years of a tablet instead of four cycles of platinum, which is a different life as well as a different outcome.
The current first choice for ALK-positive lung cancer in most guidelines, and the strongest evidence in solid tumour oncology that a drug can be designed to work inside the brain. Five-year follow-up has since shown the majority of patients still progression-free.
The trial that made ALK testing worth doing. It is also the clearest case in oncology of a drug finding its disease after the fact: crizotinib entered the clinic as a MET inhibitor and became an ALK drug because somebody checked.
Shares Anaplastic lymphoma kinase inhibition in non-small-cell lung cancer, Crizotinib, Driver mutation, ALK-positive non-small-cell lung cancer and the tag lung-evidence.
Shares Measure brain metastasis prevention as a primary endpoint, not as a secondary one, Brain metastases (intracranial disease), The brain: barrier and sanctuary, Lung cancer roadmap: from Doll and Hill and the naming of tobacco, through the cytotoxic plateau, computed tomography screening, EGFR and ALK, immunotherapy by PD-L1, the perioperative trials and PACIFIC, to DLL3 in small-cell disease and a 2032 registry watch and the tag lung-evidence.
Shares Solange Peters, Driver mutation, Lung cancer roadmap: from Doll and Hill and the naming of tobacco, through the cytotoxic plateau, computed tomography screening, EGFR and ALK, immunotherapy by PD-L1, the perioperative trials and PACIFIC, to DLL3 in small-cell disease and a 2032 registry watch, Acquired resistance to every therapy and the tag lung-evidence.
Shares Tony S. K. Mok, Driver mutation, Lung cancer roadmap: from Doll and Hill and the naming of tobacco, through the cytotoxic plateau, computed tomography screening, EGFR and ALK, immunotherapy by PD-L1, the perioperative trials and PACIFIC, to DLL3 in small-cell disease and a 2032 registry watch, New England Journal of Medicine and the tag lung-evidence.
Shares Driver mutation, Lung cancer roadmap: from Doll and Hill and the naming of tobacco, through the cytotoxic plateau, computed tomography screening, EGFR and ALK, immunotherapy by PD-L1, the perioperative trials and PACIFIC, to DLL3 in small-cell disease and a 2032 registry watch, Acquired resistance to every therapy, New England Journal of Medicine and the tag lung-evidence.
Shares Driver mutation, Lung cancer roadmap: from Doll and Hill and the naming of tobacco, through the cytotoxic plateau, computed tomography screening, EGFR and ALK, immunotherapy by PD-L1, the perioperative trials and PACIFIC, to DLL3 in small-cell disease and a 2032 registry watch, New England Journal of Medicine, Lung cancer (all types) and the tag lung-evidence.
Shares Driver mutation, Lung cancer roadmap: from Doll and Hill and the naming of tobacco, through the cytotoxic plateau, computed tomography screening, EGFR and ALK, immunotherapy by PD-L1, the perioperative trials and PACIFIC, to DLL3 in small-cell disease and a 2032 registry watch, Acquired resistance to every therapy, New England Journal of Medicine and the tag lung-evidence.
Shares Driver mutation, Lung cancer roadmap: from Doll and Hill and the naming of tobacco, through the cytotoxic plateau, computed tomography screening, EGFR and ALK, immunotherapy by PD-L1, the perioperative trials and PACIFIC, to DLL3 in small-cell disease and a 2032 registry watch, Acquired resistance to every therapy, New England Journal of Medicine and the tag lung-evidence.