Effects of Atorvastatin on Myonecrosis

Effects of Single-Dose Atorvastatin on Peri-Procedural Myonecrosis During Percutaneous Coronary Intervention in Patients With Acute Coronary Syndromes - The NO-MI Study

This study is designed as a prospective, randomized, placebo-controlled, double-blind analysis of atorvastatin 80 mg versus placebo administered on average 4 hours prior to percutaneous coronary intervention [PCI] (at least 2 hours) in patients presenting with unstable angina. Only patients with negative cardiac biomarkers, measured on 2 separate occasions a few hours apart will be eligible for inclusion. Furthermore, patients already on high-dose statin therapy; patients taking any statin within 24 hours prior to the PCI; and patients with contraindications to statins will be excluded from the study. The primary endpoint is a quantitative troponin level at 18-24 hours after PCI. At an enrollment of a total of 150 patients (75 per group), the study is powered to detect a 30% difference in troponin level. Secondary endpoints include elevation of creatine kinase (CK) and CK-MB above the upper limit of normal, change in C-reactive protein (CRP) levels from baseline and thrombolysis in myocardial infarction (TIMI) myocardial perfusion grade. All patients will be started on statin therapy the day after the procedure, as deemed appropriate by their treating physicians.

Study Overview

• Status: Terminated
• Conditions: Coronary Disease
• Intervention / Treatment: Drug: Atorvastatin 80mg; Other: Screening; Drug: Placebo Oral Tablet

Detailed Description

STUDY OBJECTIVES:

1. The primary endpoint of the study is to evaluate the effects of a single high dose of atorvastatin versus placebo on peri-procedural myonecrosis, as measured by troponin T (TnT), during percutaneous coronary intervention (PCI) in patients presenting with acute coronary syndromes (ACS).
2. Secondary endpoints include the measurements of other biomarkers of myocyte injury (CK, CK-MB) and inflammation (CRP).
3. Other secondary endpoints include the relative angiographic efficacy of atorvastatin versus placebo on the post PCI growth of tissue level perfusion circumference and the post PCI growth of tissue level perfusion brightness using digital subtraction angiography.

METHODS:

I. Selection and Number of Patients

The study subjects are to be selected from those patients presenting to the BIDMC for cardiac catheterization. Eligible patients will be identified in the cardiac catheterization holding area prior to their procedure. After obtaining informed consent, patients will be randomized to a single dose of atorvastatin or placebo, which will be administered in the holding area about 4 hours prior to the procedure. There will be a total of 150 subjects enrolled in the study. There are a total of 2500 PCIs performed at the BIDMC per year, a third of which are for ACS. We anticipate that 30-40% of patients with ACS will be eligible for study participation.

II. Informed Consent

Informed consent will be obtained from all individuals prior to enrolment in the study according to local Internal Review Board guidelines.

III. Pretreatment Data Collection

Baseline clinical data will be recorded at enrolment and will include: Subject's age, sex, weight and height, diabetes, hypertension, smoking status, hypercholesterolemia (including cholesterol levels if available), the presence of coronary or peripheral artery disease and prior history of PCI or coronary artery bypass surgery. Further, all current medications will be recorded. A detailed angina history will be collected from the patient and the medical record looking for evidence of unstable angina as defined by Braunwald.

IV. Medications

A. Study Medication

Patients will be randomly assigned to atorvastatin 80 mg po or placebo in a double-blind fashion. The study medication will be administered immediately after informed consent is obtained and the patient is randomized to a treatment group in the cardiac catheterization holding area. Given the typical waiting time between first presentation in the holding area and PCI in a non-emergent case, it is estimated that the study medication will be administered 4 hours prior to the procedure (minimal time of 2 hours). All patients will receive a single dose of study medication prior to the procedure. After the completion of the procedure, all statin therapy will be withheld until the next day. Eligible patients can then receive statin therapy according to the treating physicians' preferences. All potential adverse reactions to the study medication will be recorded.

B. Concomitant Therapy

Aspirin (325 mg/day) will be administered prior to intervention and during follow-up. Clopidogrel (300 mg or 600 mg bolus followed by 75 mg/day) will be administered post-stent deployment. It is expected that the majority of patients will receive a glycoprotein IIb/IIIa inhibitor during the procedure and for 18 hours thereafter.

V. Procedures

A. Laboratory Tests

At baseline, levels of troponin, CK and CK-MB will be obtained at the time of presentation and immediately prior to PCI. Patients with any of these serum markers above the upper limit of normal will be excluded from the study. Post-procedural enzymes will be obtained 6-8 hours after the procedure and the next morning (18-24 hours after the procedure). Patients with elevated enzymes may undergo further sampling to determine the peak enzyme rise. The peak troponin level obtained from any post-procedural blood draw will be used as the primary endpoint. Furthermore, baseline CRP levels will be obtained prior to PCI and on the next day.

B. Digital Subtraction Angiography

To quantitate the kinetics of dye entry into the myocardium, digital subtraction angiography can be used. Digital subtraction angiography will be performed at end diastole by aligning cineframe images before dye filled the myocardium with the frame in which dye first reached its peak brightness. The spine, ribs, diaphragm and the epicardial artery are then subtracted. A representative region of the myocardium is sampled that is free of overlap by epicardial arterial branches to determine the increase in the gray scale brightness of the myocardium. The circumference of the myocardial blush is measured using a handheld planimeter (Fowler, Inc). The frame count ÷ number of frames per second is used to measure the time elapsed during angiography to quantitate the rate of rise in the growth (cm/sec) and brightness (gray/sec) of myocardial blush. Blush will also be assessed visually using the TIMI myocardial perfusion grade.

• Study Type: Interventional
• Enrollment (Actual): 97
• Phase: Phase 4

Contacts and Locations

Study Locations

• United States
  • Massachusetts
    • Boston, Massachusetts, United States, 02215
      • Beth Israel Deaconess Medical Center

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Patients must be aged 18 or over.
• Patients must provide written informed consent.
• Patients are presenting with unstable angina (defined as new onset chest pain, accelerating chest pain, chest pain at rest and ST-segment depression on the electrocardiogram [EKG])
• Patients undergoing successful coronary stent implantation of the (presumed) culprit lesion (defined as < 50% residual stenosis).

Exclusion Criteria:

• Any patient who is unable to give written informed consent.
• Any condition which, in the investigator's opinion, would interfere with optimal participation in the study or produce a significant risk to the patient.
• Patients presenting with an ST-elevation myocardial infarction (MI).
• Patients with elevated troponin, CK, or CK-MB (above the upper limit of normal).
• Patients already on high-dose statin therapy (defined as any statin equivalent to atorvastatin ≥ 40 mg).
• Patients who took any statin agent within 24 hours of presentation to the cardiac catheterization laboratory.
• Patients with active hepatic disease or myositis, in whom statin therapy is contraindicated.
• Patients with hypersensitivity to atorvastatin.
• Patients with procedural complications, including unsuccessful percutaneous transluminal coronary angioplasty (PTCA)/stenting, major side-branch occlusion, flow-limiting dissections at the completion of the procedure, emergent coronary artery bypass surgery, peri-procedural thrombus formation with distal embolization, stent thrombosis within the first 24 hours, repeat emergent PCI within 24 hours, and death within 24 hours.
• Cardiogenic shock.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Prevention
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Quadruple

Number of Arms

3

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: atorvastatin 80 mg; 80 mg atorvastatin on average of 2-4 hours pre angio/PCI for ACS	Drug: Atorvastatin 80mg; atorvastatin 80 mg pre-angio/PCI; Other Names: lipitor; Other: Screening; Patients signed consent to be screened for eligibility for randomization to placebo vs. study drug (atorvastatin)
Placebo Comparator: placebo oral tablet; placebo on average of 2-4 hours pre angio/PCI for ACS	Other: Screening; Patients signed consent to be screened for eligibility for randomization to placebo vs. study drug (atorvastatin); Drug: Placebo Oral Tablet; placebo pre-PCI for ACS
No Intervention: Screening; Patients signed consent if willing to participate. Patients will continue onto randomization if appropriate per inc/exc (i.e. stent placement) otherwise screen fail

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Peri-procedural Myonecrosis	As measured by troponin T (TnT), during percutaneous coronary intervention (PCI). TnT will be measured at 18-24 hours. Assuming a 40% event rate (elevation in TnT), this study powered to predict 30% relative reduction in TnT	24 hours

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Other Biomarkers of Myocyte Injury (CK, CK-MB)	No data was analyzed due to small numbers. Collected data no longer available as retention period has passed	24 hours
Inflammatory Markers (CRP)	No data was analyzed due to small numbers. Collected data no longer available as retention period has passed	24 hours
Post PCI Growth of Tissue Level Perfusion Circumference and Brightness Using Digital Subtraction Angiography	No data was analyzed due to small numbers. Collected data no longer available as retention period has passed	24 hours

Collaborators and Investigators

• Sponsor: Beth Israel Deaconess Medical Center
• Collaborators: Pfizer
• Investigators: Principal Investigator: Joseph Carrozza, Jr, MD, Beth Israel Deaconess Medical Center

Study record dates

Study Major Dates

• Study Start (Actual): May 1, 2006
• Primary Completion (Actual): October 1, 2008
• Study Completion (Actual): January 1, 2009

Study Registration Dates

• First Submitted: June 22, 2006
• First Submitted That Met QC Criteria: June 22, 2006
• First Posted (Estimate): June 26, 2006

Study Record Updates

• Last Update Posted (Actual): January 2, 2018
• Last Update Submitted That Met QC Criteria: December 1, 2017
• Last Verified: December 1, 2017

More Information

Terms related to this study

• Keywords: Acute coronary syndrome; Percutaneous coronary intervention; Peri-procedure myocardial infarction
• Additional Relevant MeSH Terms: Myocardial Ischemia; Heart Diseases; Cardiovascular Diseases; Vascular Diseases; Coronary Disease; Acute Coronary Syndrome; Molecular Mechanisms of Pharmacological Action; Enzyme Inhibitors; Antimetabolites; Anticholesteremic Agents; Hypolipidemic Agents; Lipid Regulating Agents; Hydroxymethylglutaryl-CoA Reductase Inhibitors; Atorvastatin
• Other Study ID Numbers: 2006P000035

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO
• IPD Plan Description: no plans to share data

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No