Brigatinib treated ALK positive lung squamous cell carcinoma after failed chemotherapy: A case report.

The definitive efficacy of anaplastic lymphoma kinase (ALK) inhibitors in ALK positive lung squamous cell carcinoma (sqCC) patients remain unclear. Here, we report a case in which brigatinib had a therapeutic effect on ALK-positive lung squamous cell carcinoma. The patient in this report was diagnosed with ALK-positive lung squamous cell carcinoma with brain metastases, and received brigatinib after failure of first-line chemotherapy. Response duration was approximately 11 months, with tolerable side effects. In conclusion, a good clinical effect was achieved in a patient with ALK positive lung squamous cell carcinoma who received treatment with an ALK inhibitor.