Abstract
We describe the current status of lipid-lowering therapies for ischemic stroke prevention. The SPARCL trial published in 2006 has been a landmark study in vascular neurology. The trial demonstrated that high-dose atorvastatin prevents recurrent stroke, and led the AHA/ASA to recommend statin therapy for patients with stroke or TIA of atherosclerotic origin. Recently, the J-STARS study demonstrated that therapy with low-dose pravastatin reduced atherothrombotic infarction incidence among patients with prior ischemic stroke. Besides, several trials have shown improved stroke outcomes with non-statin lipid-lowering medications: IMPROVE-IT with ezetimibe on top of simvastatin and PCSK9 inhibitors-FOURIER with evocolumab and ODYSSEY-OUTCOMES with alirocumab-on top of statin therapy. LDL-cholesterol remains the primary lipid treatment target for reduction of stroke risk. Randomized trials have shown that each reduction of 40mg/dL in the level of LDL-cholesterol reduces the stroke risk by approximately one quarter, and further, reductions in LDL-cholesterol levels have shown to produce additional reductions in stroke risk. Currently, we have evidence of benefit for adding non-statin lipid-modifying therapies to statins to reduce stroke risk. Surely, these novel strategies to reduce residual lipidic risk will provide future benefits on stroke prevention.
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