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BREAKING NEWS
Source: Thailand Medical News  Aug 09, 2019
Combination Of Ezetimibe With Statins Reduces The Risk Of Heart Attacks And Strokes
Combination Of Ezetimibe With Statins Reduces The Risk Of Heart Attacks And Strokes
Source: Thailand Medical News  Aug 09, 2019
The German Institute for Quality and Efficiency in Health Care (IQWiG) recently conducted a study and benefit assessment commissioned by the German Federal Joint Committee (G-BA)  and found that individuals with a history of coronary heart disease (CHD) or acute coronary syndrome (ACS) benefit more from treatment with a statin in combination with ezetimibe than from statin monotherapy.



Cardiovascular diseases or CVD, were the most common cause of death worldwide in 2018, accounting for 34 percent of all deaths. Of these causes of death, 87 percent resulted from a heart attack or stroke.

Cardiovascular diseases are diseases that originate from the vascular system along with the heart. These include hypertension, CHD, ACS, heart attack and stroke. One of the largest modifiable risk factors for cardiovascular diseases is a high LDL cholesterol level (LDL refers to low-density lipoprotein). The reduction in LDL cholesterol (LDL-C) is a critical  goal in the prevention of cardiovascular diseases. In patients with a history of CHD or ACS, the administration of cholesterol-lowering drugs is typically recommended. Statins are currently the most commonly prescribed group of drugs in this category of cholesterol lowering drugs.

A combination of statin and ezetimibe has also been used to further reduce LDL cholesterol in some cases and frequently advocated by cardiologists in high risk patients. In 2016, The German Federal Institute for Drugs and Medical Devices (BfArM) approved this protocol of the therapeutic indication for ezetimibe in patients with a history of CHD and ACS.
The researchers investigated the benefit of treatment with ezetimibe in combination with a statin to reduce the risk of cardiovascular events in patients with a history of CHD or ACS with regard to patient relevant outcomes versus treatment with a statin alone and, versus treatment with a combination of a statin and ezetimibe.

The assessment of research purely on statins alone was ultimately based only on the IMPROVE-IT study. The IMPROVE-IT study included 18,144 patients who had experienced an ACS within 10 days prior to randomization. The study was designed to examine the effect of statins on clinical outcomes. (the primary outcome was a combined outcome of fatal and non-fatal cardiovascular events) rather than on surrogate outcomes (such as a reduction in LDL-C). The median follow-up period was six years.

For research on the usage of ezetimibe along with statins, the IQWiG researchers identified COMBO II as the only relevant study. This randomized controlled trial included 720 patients with a high to very high cardiovascular risk whose LDL-C levels were insufficiently controlled with an existing statin therapy. The primary outcome of the study was the change in LDL-C levels after 6 months compared with baseline.

In patients with a history of CHD or ACS, the researchers saw an indication of a greater outcome of ezetimibe in combination with a statin versus  statin monotherapy. For these patients, the addition of ezetimibe reduces the risk of suffering a major adverse cardiovascular event. In the benefit assessment, serious adverse cardiovascular events were evaluated as a combined outcome of the patient-relevant components of cardiovascular death, non-fatal myocardial infarction, and non-fatal stroke.

For other patient-relevant outcomes such as all-cause mortality, hospitalization for unstable angina pectoris, hospitalization for heart failure or other serious adverse events, however, the IMPROVE-IT study showed no statistically significance indicating that the combination of statins with ezetimibe was far more effective.

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