Successful Treatment with Lorlatinib after the Development of Alectinib-Induced Liver Damage in ALK-Positive Non-Small-Cell Lung Cancer: A Case Report

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<jats:p>Alectinib is a key drug for treating anaplastic lymphoma kinase (ALK)-positive non-small-cell lung cancer (NSCLC). Alectinib-induced hepatotoxicity is less common than that through other ALK inhibitors, such as crizotinib or ceritinib. Herein, we describe a case of ALK-positive adenocarcinoma successfully treated with lorlatinib after developing alectinib-induced hepatotoxicity. A 57-year-old Japanese man received alectinib as first-line therapy for ALK-positive NSCLC. After 79 days, alectinib was discontinued because of hepatotoxicity and later restarted at 150 mg/day, inducing hepatotoxicity again after 64 days. Switching to lorlatinib treatment (continued for &#x3e;4 months) caused no severe adverse effects. Hence, lorlatinib may be useful for patients experiencing alectinib-induced hepatotoxicity. </jats:p>

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