Nilotinib-Associated Atherosclerosis Presenting as Multifocal Intracranial Stenosis and Acute Stroke.

2021 
Nilotinib, a BCR-ABL tyrosine kinase inhibitor (TKI), has been associated with vascular events and accelerated arterial stenosis, presumably of atherosclerotic etiology. Studies of nilotinib-associated atherosclerosis are mainly associated with progressive peripheral artery occlusive disease (PAOD), and only a few cases of coronary artery disease (CAD), and cerebrovascular disease (CVD) have been reported. The mechanisms by which nilotinib promotes atherosclerosis are poorly understood but endothelial and perivascular factors, mast cell depletion, and metabolic factors such as promotion of dyslipidemia and impaired glucose metabolism are thought to play a role. We present a case of a patient with chronic myelogenous leukemia (CML) treated with nilotinib who developed intracranial atherosclerosis leading to acute onset of stroke. Our patient had no cardiovascular risk factors prior to treatment with nilotinib and developed accelerated atheromatous cerebrovascular disease with severe left middle cerebral artery (MCA) stenosis. These findings suggest that nilotinib may be associated with the development of intracranial atherosclerotic disease (ICAD) independently of any preexisting vascular risk factors leading to acute stroke. Clinicians should have increased awareness of the association between nilotinib and the development of progressive atheromatous disease and vascular adverse events including PAOD, CAD, and CVD. In certain patients, these events can be severe and life threatening. Thus, screening for vascular risk factors including CVD prior to starting nilotinib and close follow up during treatment is crucial.
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