• Medical oncology · Feb 2015

    Case Reports

    Rapid response of brain metastases to alectinib in a patient with non-small-cell lung cancer resistant to crizotinib.

    • Hitomi Ajimizu, Young Hak Kim, and Michiaki Mishima.
    • Department of Respiratory Medicine, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho, Sakyo-ku, Kyoto, 606-8507, Japan.
    • Med. Oncol. 2015 Feb 1; 32 (2): 477.

    AbstractCrizotinib is a potent and specific small-molecule inhibitor of both anaplastic lymphoma kinase (ALK) and c-MET tyrosine kinases, and patients with ALK rearrangement tumor benefit from crizotinib treatment; however, its penetration into calculated cerebrospinal fluid (CSF) is considered to be poor. Alectinib is a highly selective, next-generation ALK inhibitor, and both preclinical and clinical studies have indicated that alectinib is also effective in crizotinib-resistant tumors. A recent in vitro study demonstrated significant antitumor activity of alectinib for brain metastases using mouse models of ALK-positive non-small-cell lung cancer. In this paper, we report a first case alectinib was highly effective against brain metastases refractory to crizotinib. Further investigation of alectinib in this setting would be particularly valuable.

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