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JOURNAL ARTICLE

Alectinib salvages CNS relapses in ALK-positive lung cancer patients previously treated with crizotinib and ceritinib

Justin F Gainor, Carol A Sherman, Kathryn Willoughby, Jennifer Logan, Elizabeth Kennedy, Priscilla K Brastianos, Andrew S Chi, Alice T Shaw
Journal of Thoracic Oncology 2015, 10 (2): 232-6
25526238

BACKGROUND: Leptomeningeal metastases (LM) are an increasingly frequent and devastating complication of anaplastic lymphoma kinase (ALK)-rearranged non-small-cell lung cancer (NSCLC). Currently, the optimal management of LM in ALK-positive patients remains poorly understood as these patients have been routinely excluded from clinical trials.

METHODS: We describe four ALK-positive patients with LM who were treated with the next-generation ALK inhibitor alectinib through single-patient, compassionate use protocols at two institutions. All patients had previously been treated with both FDA-approved ALK inhibitors--crizotinib and ceritinib. Patients received alectinib at a starting dose of 600 mg twice daily.

RESULTS: Four ALK-positive NSCLC patients with symptomatic leptomeningeal disease were identified. Three of four patients experienced significant clinical and radiographic improvements in LM upon treatment with alectinib. A fourth patient had stable intracranial disease for 4 months before eventual systemic disease progression. Overall, alectinib was well tolerated. One patient required dose reduction due to grade 2 hyperbilirubinemia.

CONCLUSIONS: Alectinib is active in ALK-rearranged NSCLC patients with LM, including in patients previously treated with crizotinib and ceritinib. Additional prospective studies of alectinib in ALK-positive patients with LM are warranted.

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