- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01321034
Effect of Niacin in the Lipoprotein (a) Concentration
Effect of Niacin in the Lipoprotein (a) Concentration With Regard to Apolipoprotein (a) Size and Baseline Lipoprotein (a) Concentration.
Objectives.
- To evaluate the absolute and relative Lp(a) lowering effect of 1g/20 mg and 2 g/40 mg day of Niacin/Laropiprant in subjects with normal Lp(a) (< 30 mg/dL), high Lp(a) (30-60 mg/dL) and very high Lp(a) (> 60 mg/dL).
- To evaluate the absolute and relative Lp(a) lowering effect of 1g/20 mg and 2 g/40 mg day of Niacin/Laropiprant depending on the number of kringle IV-2 repeated copies on the apo(a) gene. 2.1.1 Hypotheses.
- The Lp(a) lowering effect of niacin is dependent of the pre-treatment Lp(a) concentration, with higher absolute and relative reduction in Lp(a) in subjects with hyperlipoproteinemia(a).
- Lp(a) size, throughout modifying hepatic synthesis of apo(a), is a major factor related to the lowering effect variability of niacin in human.
Study Overview
Detailed Description
Open-label 12-week study, 1g/20 mg day of Niacin/Laropiprant for 4-weeks followed by 8 additional weeks of 2 g/40 mg day. Subjects with normal Lp(a) will be use as comparative group for the other two groups, so no placebo group is required is this study.
Subjects: volunteers from the Lipid Clinic of Hospital Universitario Miguel Servet of Zaragoza, Spain. Subjects were selected according to their previously determined Lp(a)concentration. All volunteers before any study procedure will have to give written inform consent to a protocol previously approved for the Ethical Committees of our institutions.
Biochemical determinations: lipids: total cholesterol and triglycerides; lipoproteins: HDL-cholesterol, Lp(a); apolipoproteins: Apo A1 and apo B and safety biochemical parameters (glucose, uric acid, creatinine, liver and muscle enzymes will be measured at baseline and at the end of the two treatment periods (weeks 4 and 8).
An adverse experience questionnaire will be done in each visit. Genetic analysis: apo(a) genetic polymorphism responsible of the Lp(a) size variability will be analyzed by a PCR-based methodology (Lanktree et al. J Lipid Res 2009; 50: 768-72 ).
Study Type
Enrollment (Actual)
Phase
- Phase 4
Contacts and Locations
Study Locations
-
-
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Huesca, Spain
- Hospital San Jorge
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Zaragoza, Spain, 50009
- Hospital Universitario Miguel Servet
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Zaragoza, Spain
- Hospital Royo Villanova
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Age >18 and < 80 years
- LDL cholesterol between 70 and 190 mg/dL
- Triglycerides < 500 mg/dL
- At least 2 Lp(a) determinations previous to the beginning of the study without differences >20% or > 20 mg/dL.
- No lipid lowering therapy or on stable doses in the last 3 months
Exclusion Criteria:
- Liver disease or liver enzymes >2 times higher than reference values
- Creatinine > 2 mg/dL
- Active peptic ulcer
- Clinical gout in the last year
- Uncontrolled diabetes (HbA1c >8%)
- Enrolment in other drug clinical trial in the previous 3 months.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: TREATMENT
- Allocation: NA
- Interventional Model: SINGLE_GROUP
- Masking: NONE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
OTHER: Niacin/Laropiprant
Subjects with normal Lp(a) will be use as comparative group for the other two groups, so no placebo group is required is this study
|
1g/20 mg day of Niacin/Laropiprant for 4-weeks followed by 8 additional weeks of 2 g/40 mg day.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
absolute and relative Lp(a) lowering effect of 1g/20 mg and 2 g/40 mg day of Niacin/Laropiprant in subjects with normal Lp(a) (<30 mg/dL), high Lp(a) (30-60 mg/dL) and very high Lp(a) (>60 mg/dL g/40 mg day of Niacin/Laropiprant
Time Frame: 8 weeks
|
8 weeks
|
Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
absolute and relative Lp(a) lowering effect of 1g/20 mg and 2 g/40 mg day of Niacin/Laropiprant depending on the number of kringle IV-2 repeated copies on the apo(a) gene.
Time Frame: 8 weeks
|
8 weeks
|
Collaborators and Investigators
Collaborators
Investigators
- Principal Investigator: Fernando Civeira, MD, Hospital Miguel Servet
Study record dates
Study Major Dates
Study Start
Primary Completion (ACTUAL)
Study Completion (ACTUAL)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ESTIMATE)
Study Record Updates
Last Update Posted (ESTIMATE)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
- Metabolic Diseases
- Lipid Metabolism Disorders
- Hyperlipidemias
- Dyslipidemias
- Hypercholesterolemia
- Physiological Effects of Drugs
- Molecular Mechanisms of Pharmacological Action
- Vasodilator Agents
- Antimetabolites
- Micronutrients
- Hypolipidemic Agents
- Lipid Regulating Agents
- Vitamins
- Vitamin B Complex
- Niacin
Other Study ID Numbers
- EudraCT 2010-022258-17
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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