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Updated: Jan 12, 2026

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Published on: June 2, 2023
Drug-induced autoimmune thyroiditis during lorlatinib treatment in a patient with ALK-positive non-small cell lung
Yuki Yamazaki1, Yuko Morishima1, Yuka Aida2
1Department of Pulmonary Medicine, Institute of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki, 305-8575, Japan.
Abstract:
Lorlatinib has demonstrated significant efficacy for treating anaplastic lymphoma kinase (ALK)-positive non-small cell lung cancer (NSCLC); however, its safety profile-particularly regarding immune-related adverse events-remains incompletely characterized. We describe a case of ALK-positive NSCLC complicated by autoimmune thyroiditis during lorlatinib therapy. The temporal link between lorlatinib exposure, the emergence of thyroid autoantibodies, and their resolution following drug withdrawal raises the possibility that lorlatinib may influence autoimmune responses.
Insights
Lorlatinib effectively treats anaplastic lymphoma kinase-positive non-small cell lung cancer. This case suggests lorlatinib may trigger autoimmune thyroiditis, a condition that resolved after discontinuing the drug.
Area of Science:
- Oncology
- Immunology
Background:
- Lorlatinib is an effective treatment for anaplastic lymphoma kinase (ALK)-positive non-small cell lung cancer (NSCLC).
- The safety profile of lorlatinib, especially immune-related adverse events, requires further characterization.
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