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Effects of Ezetimibe on the Absorption of Oxidized Cholesterol

Primary Purpose

Hypercholesterolemia

Status
Completed
Phase
Phase 4
Locations
United States
Study Type
Interventional
Intervention
ezetimibe
placebo
Sponsored by
UCSF Benioff Children's Hospital Oakland
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional basic science trial for Hypercholesterolemia focused on measuring Hypercholesterolemia, Oxysterol, Ezetimibe, Zetia

Eligibility Criteria

18 Years - 70 Years (Adult, Older Adult)All SexesAccepts Healthy Volunteers

Inclusion Criteria:

  • Not currently pregnant or lactating and is highly unlikely to conceive
  • Body Mass Index (BMI) between 20-30 kilograms per meter squared (kg/m2) inclusive.
  • Body weight, as reported by patient, stable (±2 kg) for >6 weeks
  • Plasma low density lipoprotein cholesterol (LDL-C) between 130 and 180 milligrams per deciliter (mg/dL) inclusive. Note: One retest allowed.
  • Triglyceride (TG) concentrations ≤150 mg/dL. Note: One retest allowed.
  • Fasting blood glucose <110 mg/dL and hemoglobin A1c (HbA1C) ≤ 6 percent at Visit 1. Note: One retest allowed.
  • Liver transaminases (ALT, AST) ≤1.5 x upper limit of normal (ULN) and no active liver disease. Note: One retest allowed.
  • Creatine Phosphokinase (CPK) ≤2x ULN. Note: One retest allowed.
  • Willingness to maintain a stable diet for the duration of the study.
  • Can understand and comply with study procedures and signs a written informed consent.
  • Patient is ≥80 precent compliant with dosing during Placebo Run-In Period or, in the opinion of the investigator, is able to maintain ≥80 percent therapy compliance during the active treatment period of the study.

Exclusion Criteria:

  • Lipid-lowering therapy and replacement of this therapy with study medication is considered inappropriate by the investigator.
  • Consumes an average of more than 2 alcoholic drinks per day.
  • Smokes.
  • Currently engages in a vigorous exercise regimen or intensive exercise bouts >4x per month.
  • Treated with any other investigational drug within 30 days of Visit 1.
  • Hypersensitivity or intolerance to ezetimibe or any component of this medication.
  • Any condition or situation which poses a risk to the patient or interfere with participation in the study.
  • Congestive heart failure.
  • Uncontrolled cardiac arrhythmias.
  • History of myocardial infarction, stroke, or any other clinical manifestation of coronary, cerebral, or peripheral vascular disease.
  • Uncontrolled hypertension
  • Impaired renal function, nephrotic syndrome or other clinically significant renal disease at Visit 1.
  • Active or chronic hepatobiliary or hepatic disease.
  • History of irritable bowel syndrome, ileal bypass, gastric bypass or any gastrointestinal disorder/condition associated with malabsorption.
  • Uncontrolled endocrine or metabolic disease known to influence serum lipids or lipoproteins.
  • Type I or Type II diabetes mellitus.
  • Disorders of the hematologic, digestive, or central nervous systems including cerebrovascular disease and degenerative disease that would limit study evaluation or participation.
  • Human Immunodeficiency Virus (HIV) positive.
  • History of cancer within the past 5 years (except for successfully treated basal and squamous cell carcinomas).
  • History of uncontrolled psychiatric illness or drug/alcohol abuse within the past 5 years. Individuals with psychiatric illness adequately controlled and stable on pharmacotherapy may be enrolled at the discretion of the investigator.
  • Lipid-lowering agents taken within 6 weeks and fibrates taken within 8 weeks prior to visit 3.
  • Cardiovascular medications are acceptable provided the patient has been on a stable regimen for at least 6 weeks prior to Visit 3 and indicates a willingness to continue the stable regimen for the duration of the study.
  • Supplementation with antioxidants beyond a standard multivitamin for the duration of the study.
  • Psyllium, other fiber-based laxatives, and/or over the counter (OTC) therapies known to affect serum lipid levels taken within 6 weeks of Visit 3.
  • Female patients receiving hormone replacement therapy, any estrogen antagonist/agonist or hormonal contraceptives.
  • Treatment with cyclosporine except for ophthalmic indication
  • Anti-obesity medications such as orlistat or sibutramine taken within 3 months prior to Visit 1.
  • Therapeutic doses of systemic corticosteroids except inhaled steroid therapy (for example, Pulmicort®) maintained on a stable dosing regimen for at least 6 weeks prior to randomization (Visit 3) and throughout the duration of the study

Sites / Locations

  • Cholesterol Research Center

Arms of the Study

Arm 1

Arm 2

Arm Type

Placebo Comparator

Experimental

Arm Label

Sugar Pill

ezetimibe

Arm Description

Placebo medication will be taken orally once daily in the morning on rising either during the first intervention period or the second intervention period. Single-blind ezetimibe placebo will be taken during the Run-In Period. Patients will be issued one bottle containing either active drug or placebo for each treatment period.

10 mg medication will be taken orally once daily in the morning on rising either during the first intervention period or the second intervention period. Single-blind ezetimibe placebo will be taken during the Run-In Period. Patients will be issued one bottle containing either active drug or placebo for each treatment period.

Outcomes

Primary Outcome Measures

Log[Area-under-the-plasma-concentration-curve(AUC) 0-8 Hours 7-ketocholesterol] After an Oral Bolus
Log of Area-under-the-plasma-concentration curve (AUC 0-8hrs) of 7-ketocholesterol after an oral bolus in patients with primary hypercholesterolemia after treatment with ezetimibe versus placebo

Secondary Outcome Measures

Log(Maximal Plasma Concentration (Cmax) of 7-ketocholesterol) After an Oral Bolus
Log Cmax of 7 ketocholesterol after an oral bolus in patients with primary hypercholesterolemia.

Full Information

First Posted
November 19, 2008
Last Updated
February 12, 2021
Sponsor
UCSF Benioff Children's Hospital Oakland
Collaborators
Merck Schering-Plough
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1. Study Identification

Unique Protocol Identification Number
NCT00794677
Brief Title
Effects of Ezetimibe on the Absorption of Oxidized Cholesterol
Official Title
A Randomized, Double-Blind, Placebo-Controlled, 2-Period, Crossover Study to Evaluate the Effects of Ezetimibe on the Plasma Appearance of 7-Ketocholesterol After an Oral Bolus in Patients With Primary Hypercholesterolemia
Study Type
Interventional

2. Study Status

Record Verification Date
February 2021
Overall Recruitment Status
Completed
Study Start Date
June 2006 (undefined)
Primary Completion Date
February 2008 (Actual)
Study Completion Date
September 2008 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
UCSF Benioff Children's Hospital Oakland
Collaborators
Merck Schering-Plough

4. Oversight

Data Monitoring Committee
No

5. Study Description

Brief Summary
The purpose of this study is to test the effects of Zetia™ (ezetimibe) 10 milligrams (mg) on the absorption of oxysterol into the blood following a meal containing oxysterol.
Detailed Description
There are a number of cholesterol-lowering drugs available that can lower blood cholesterol to a healthier level. Zetia™ (ezetimibe) 10 mg is available by prescription for the treatment of high cholesterol. While Zetia has been shown to inhibit the absorption of dietary cholesterol into the bloodstream, its effects on oxysterol absorption from the diet have not been completely evaluated.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Hypercholesterolemia
Keywords
Hypercholesterolemia, Oxysterol, Ezetimibe, Zetia

7. Study Design

Primary Purpose
Basic Science
Study Phase
Phase 4
Interventional Study Model
Crossover Assignment
Masking
ParticipantCare ProviderInvestigator
Allocation
Randomized
Enrollment
26 (Actual)

8. Arms, Groups, and Interventions

Arm Title
Sugar Pill
Arm Type
Placebo Comparator
Arm Description
Placebo medication will be taken orally once daily in the morning on rising either during the first intervention period or the second intervention period. Single-blind ezetimibe placebo will be taken during the Run-In Period. Patients will be issued one bottle containing either active drug or placebo for each treatment period.
Arm Title
ezetimibe
Arm Type
Experimental
Arm Description
10 mg medication will be taken orally once daily in the morning on rising either during the first intervention period or the second intervention period. Single-blind ezetimibe placebo will be taken during the Run-In Period. Patients will be issued one bottle containing either active drug or placebo for each treatment period.
Intervention Type
Drug
Intervention Name(s)
ezetimibe
Other Intervention Name(s)
Zetia
Intervention Description
Blinded study medication (ezetimibe 10 mg in tablet form) will be taken orally once daily in the morning on rising. Single-blind ezetimibe placebo will be taken during the Run-In Period. Patients will be issued one bottle containing either active drug or placebo for each treatment period.
Intervention Type
Drug
Intervention Name(s)
placebo
Other Intervention Name(s)
Sugar Pill
Intervention Description
Blinded study medication (matched placebo) will be taken orally once daily in the morning on rising. Single-blind ezetimibe placebo will be taken during the Run-In Period. Patients will be issued one bottle containing either active drug or placebo for each treatment period.
Primary Outcome Measure Information:
Title
Log[Area-under-the-plasma-concentration-curve(AUC) 0-8 Hours 7-ketocholesterol] After an Oral Bolus
Description
Log of Area-under-the-plasma-concentration curve (AUC 0-8hrs) of 7-ketocholesterol after an oral bolus in patients with primary hypercholesterolemia after treatment with ezetimibe versus placebo
Time Frame
6 weeks
Secondary Outcome Measure Information:
Title
Log(Maximal Plasma Concentration (Cmax) of 7-ketocholesterol) After an Oral Bolus
Description
Log Cmax of 7 ketocholesterol after an oral bolus in patients with primary hypercholesterolemia.
Time Frame
6 weeks
Other Pre-specified Outcome Measures:
Title
Log(Fasting Plasma Levels of Diet-derived Oxysterols (7-ketocholesterol))
Time Frame
6 weeks
Title
Log (AUC of Plasma Total Cholesterol) After an Oral Bolus
Description
Area under the curve (AUC) calculated over 8 hours
Time Frame
6 weeks
Title
Log (AUC of Plasma Triglyceride) After an Oral Bolus
Description
Area under the curve (AUC) calculated over 8 hours
Time Frame
6 weeks
Title
Percent Change of Fasting Apolipoprotein B From Baseline
Description
Change = [(Week 6 - baseline)/baseline value *100]
Time Frame
Baseline (placebo run-in) and 6 weeks
Title
Percent Change of Fasting Low Density Lipoprotein Cholesterol From Baseline
Description
Change = [(Week 6 - baseline)/baseline value *100]
Time Frame
Baseline (placebo run-in) and 6 weeks
Title
Percent Change in Fasting High Density Lipoprotein Cholesterol
Description
Change = [(Week 6 - baseline)/baseline value *100]
Time Frame
Baseline (placebo run-in) and 6 weeks
Title
Percent Change of Fasting Non-high Density Lipoprotein Cholesterol From Baseline
Description
Change = [(Week 6 - baseline)/baseline value *100]
Time Frame
Baseline (placebo run-in) and 6 weeks

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
70 Years
Accepts Healthy Volunteers
Accepts Healthy Volunteers
Eligibility Criteria
Inclusion Criteria: Not currently pregnant or lactating and is highly unlikely to conceive Body Mass Index (BMI) between 20-30 kilograms per meter squared (kg/m2) inclusive. Body weight, as reported by patient, stable (±2 kg) for >6 weeks Plasma low density lipoprotein cholesterol (LDL-C) between 130 and 180 milligrams per deciliter (mg/dL) inclusive. Note: One retest allowed. Triglyceride (TG) concentrations ≤150 mg/dL. Note: One retest allowed. Fasting blood glucose <110 mg/dL and hemoglobin A1c (HbA1C) ≤ 6 percent at Visit 1. Note: One retest allowed. Liver transaminases (ALT, AST) ≤1.5 x upper limit of normal (ULN) and no active liver disease. Note: One retest allowed. Creatine Phosphokinase (CPK) ≤2x ULN. Note: One retest allowed. Willingness to maintain a stable diet for the duration of the study. Can understand and comply with study procedures and signs a written informed consent. Patient is ≥80 precent compliant with dosing during Placebo Run-In Period or, in the opinion of the investigator, is able to maintain ≥80 percent therapy compliance during the active treatment period of the study. Exclusion Criteria: Lipid-lowering therapy and replacement of this therapy with study medication is considered inappropriate by the investigator. Consumes an average of more than 2 alcoholic drinks per day. Smokes. Currently engages in a vigorous exercise regimen or intensive exercise bouts >4x per month. Treated with any other investigational drug within 30 days of Visit 1. Hypersensitivity or intolerance to ezetimibe or any component of this medication. Any condition or situation which poses a risk to the patient or interfere with participation in the study. Congestive heart failure. Uncontrolled cardiac arrhythmias. History of myocardial infarction, stroke, or any other clinical manifestation of coronary, cerebral, or peripheral vascular disease. Uncontrolled hypertension Impaired renal function, nephrotic syndrome or other clinically significant renal disease at Visit 1. Active or chronic hepatobiliary or hepatic disease. History of irritable bowel syndrome, ileal bypass, gastric bypass or any gastrointestinal disorder/condition associated with malabsorption. Uncontrolled endocrine or metabolic disease known to influence serum lipids or lipoproteins. Type I or Type II diabetes mellitus. Disorders of the hematologic, digestive, or central nervous systems including cerebrovascular disease and degenerative disease that would limit study evaluation or participation. Human Immunodeficiency Virus (HIV) positive. History of cancer within the past 5 years (except for successfully treated basal and squamous cell carcinomas). History of uncontrolled psychiatric illness or drug/alcohol abuse within the past 5 years. Individuals with psychiatric illness adequately controlled and stable on pharmacotherapy may be enrolled at the discretion of the investigator. Lipid-lowering agents taken within 6 weeks and fibrates taken within 8 weeks prior to visit 3. Cardiovascular medications are acceptable provided the patient has been on a stable regimen for at least 6 weeks prior to Visit 3 and indicates a willingness to continue the stable regimen for the duration of the study. Supplementation with antioxidants beyond a standard multivitamin for the duration of the study. Psyllium, other fiber-based laxatives, and/or over the counter (OTC) therapies known to affect serum lipid levels taken within 6 weeks of Visit 3. Female patients receiving hormone replacement therapy, any estrogen antagonist/agonist or hormonal contraceptives. Treatment with cyclosporine except for ophthalmic indication Anti-obesity medications such as orlistat or sibutramine taken within 3 months prior to Visit 1. Therapeutic doses of systemic corticosteroids except inhaled steroid therapy (for example, Pulmicort®) maintained on a stable dosing regimen for at least 6 weeks prior to randomization (Visit 3) and throughout the duration of the study
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Ronald M Krauss, M.D.
Organizational Affiliation
UCSF Benioff Children's Hospital Oakland
Official's Role
Principal Investigator
Facility Information:
Facility Name
Cholesterol Research Center
City
Berkeley
State/Province
California
ZIP/Postal Code
94705
Country
United States

12. IPD Sharing Statement

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Effects of Ezetimibe on the Absorption of Oxidized Cholesterol

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