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Crizotinib is a multitarget tyrosine kinase inhibitor used in treating non-small cell lung cancer (NSCLC) with anaplastic lymphoma kinase (ALK) gene mutation. Common and well-known adverse effects include gastrointestinal disturbance, dizziness, fatigue, liver enzyme elevation and visual disturbance. We describe here a patient with NSCLC who presented with symptomatic bradycardia due to crizotinib.
The patient was a 69-year-old Chinese male with stage IV epidermal growth factor receptor-negative, ALK-rearranged NSCLC. He presented to the emergency department complaining of breathlessness, swollen legs and hiccups. He had type 2 diabetes mellitus but no previous cardiovascular disease. He was taking crizotinib 250 mg twice daily, vildagliptin …
Contributors KKL is responsible for writing the manuscript. CL is responsible for obtaining patient consent and summarising patient's clinical record. BC is responsible for supervising and providing advice on patient management and drafting of the manuscript.
Competing interests None declared.
Patient consent Obtained.
Provenance and peer review Not commissioned; externally peer reviewed.