A Phase 4 interventional study of Atorvastatin 10mg versus 40mg. in Coronary Disease, Ultrasonography, Interventional and Hydroxymethylglutaryl-CoA Reductase Inhibitors, sponsored by Prof. Stephen Lee. Completed at 1 site in China. Open to participants aged 18 Years to 85 Years. Per ClinicalTrials.gov, last updated 2013-02-28.
Sponsored by Prof. Stephen Lee · Phase 4, Interventional, and Treatment
While statin treatment may induce plaque regression, the effect of statin on plaque composition with varying doses is unknown. This study assessed such effects by volumetric virtual histology intravascular ultrasound (VH-IVUS).
In this prospective, randomized, double-blinded pilot study, statin-naïve patients with stable angina requiring percutaneous coronary intervention (PCI) were randomized to receive 6 months of either atorvastatin 10mg or 40 mg daily. VH-IVUS was performed in all non-PCI lesions at baseline and 6 months; all analyses were performed by core laboratory.
Statin therapy, especially at intensive doses, is beneficial in atherosclerotic coronary disease. Detecting subtle plaque regression after statin therapy is difficult by coronary angiogram; intravascular ultrasound (IVUS) is a far better method. Volumetric IVUS has been used in statin trials to evaluate plaque regression. Intensive statin therapy in the REVERSAL Trial and ASTEROID Trial appeared to achieve better regression outcomes. Stable fibrous plaque is likely to be responsible for stable ischemia, while unstable plaque (large lipid core, calcified nodule and necrotic core), thin-cap fibroatheroma, plaque erosion and plaque rupture may be responsible for acute coronary syndrome (ACS). In vivo tissue characterization of plaque composition is therefore important, yet in this regard grayscale IVUS is insufficient. The development of Virtual Histology (VH) utilizing IVUS generated radiofrequency backscattering signals to virtually separate plaque composition into 4 components corresponding to histopathology has made possible in vivo assessment of plaque composition and stability. We believed plaque regression and VH-IVUS plaque modification with statin therapy could be statin dose dependent, and may affect clinical outcomes. This study was designed to prove our hypothesis, utilizing VH-IVUS.
This study is the first prospective, randomised, double-blinded pilot study designed to investigate the varying statin dose effects on plaque regression and VH composition modulation. For ethical reasons, a placebo arm was not designed. Based on available data, clinically realistic doses of atorvastatin 10mg (low dose) and 40mg (moderate dose) were chosen. Only statin-naïve patients without previous history of myocardial infarction (MI) would be selected, aiming to show the "pure" effects of varying doses of statin and to better reveal the subtle differences in the changes.
2,839 studies on the registry are indexed under Coronary Disease; 311 are open to participants now.
This study's enrollment of 40 is below the median of 124 across 1,583 interventional studies indexed under Coronary Disease.
Browse Coronary Disease studies →Prof. Stephen Lee is the lead sponsor of 4 studies on the registry; none are open to participants now.
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Atorvastatin 10mg daily for 6 months and compared to atorvastatin 40mg daily in the other arm. The primary endpoint of 6 months VH-IVUS findings and clinical outcomes would be monitored and compared.
Drug: Atorvastatin 10mg versus 40mg.
Atorvastatin 40mg daily for 6 months and compared to atorvastatin 10mg daily in the other arm. The primary endpoint of 6 months VH-IVUS findings and clinical outcomes would be monitored and compared.
Drug: Atorvastatin 10mg versus 40mg.
2 arms comparing atorvastatin 10mg daily for 6 months to atorvastatin 40mg daily for 6 months. The primary endpoint would be the 6 months VH-IVUS findings and clinical outcomes.
Also known as: Lipitor 10mg versus 40mg daily for 6 months.
The primary endpoint would be the 6-month angiographic and VH-IVUS restudy findings.
Our hypothesis was plaque regression and virtual histology intravascular ultrasound (VH-IVUS) plaque modification with statin therapy could be statin dose dependent, and may affect clinical outcomes. 2 clinically realistic doses of atorvastatin 10mg and 40mg were chosen in statin-naïve patients without previous myocardial infarction. The primary endpoint of this study would therefore be the 6 months angiographic and IVUS follow-up, looking at the volumetric gray-scale IVUS and VH-IVUS findings at 6 months for the whole cohort as well as the differences between the 2 groups.
Time frame: 6 months
The secondary endpoint would be the occurrence of any major adverse cardiac events at 6 months (including any death, myocardial infarction or need for revascularization) as routinely monitored after all percutaneous interventional procedures.
As described in the "Title" above.
Time frame: Throughout the 6 months study period.
This study is completed, as verified in Feb 2013. You cannot join it, but the record below documents what was studied.
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