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CompletedNCT00294216Updated Feb 20, 2006

Omacor and Placebo in Carotid Plaque Stability

A Phase 3 interventional study of Omega-3-acid ethyl ester 90 (n-3 PUFA) in Cardiovascular Disease, sponsored by Pronova BioPharma. Completed at 1 site in United Kingdom. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2006-02-20.

Sponsored by Pronova BioPharma · Phase 3, Interventional, and Prevention

Phase
Phase 3
Study type
Interventional
Enrollment
121
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of this study is to investigate the effect of intake of Omacor (Omega-3-acid ethyl ester 90) 2g/day on specified parameters related to the stability of carotid plaque in patients awaiting endarterectomy.

Read the detailed description

There is evidence both from epidemiological studies and large clinical trials that consumption of long-chain Omega-3 polyunsaturated fatty acids (PUFA) found in oily fish and fish oils, protects against cardiovascular disease in Western Populations. The large clinical trial GISSI-Prevention showed radical reductions in Cardiovascular Disease and Sudden Cardiac Death after the intake of Omega-3 PUFA, and statistically significant effects were seen after only a few months of use.

One of the models for explaining this markedly effect hypothesizes that Omega-3 PUFA, with its anti inflammatory effects, might act to stabilize atherosclerotic plaques by decreasing infiltration of inflammatory cells into the plaques and/or by decreasing the activity of these cells once resident in the plaque. A previous clinical study has showed increased incorporation of the Omega-3 fatty acids EPA and DHA in carotid plaque after intake of Omega-3 PUFA. The morphological properties of the plaque was also altered, showing thicker fibrous caps and less inflammation determined by the AHA and modified AHA classification.

These findings are important to confirm. Secondly additional indicators of plaque stability are required to strengthen the hypothesis. Also the mechanisms by which the morphological changes come about need to be identified. The model that is being used assesses structural changes associated with plaque rupture and instability through different important variables.

Comparisons: Double blind comparison of Omacor 2g/day and placebo in patients awaiting endarterectomy.

02

Conditions studied

  • Cardiovascular Disease

Keywords

  • Omacor
  • Omega-3 PUFA
  • Endarterectomy
  • Carotid Plaque stability
  • Structural changes
  • inflammation
03

In context

Cardiovascular Diseases

4,904 studies on the registry are indexed under Cardiovascular Diseases; 919 are open to participants now.

This study's enrollment of 121 is above the median of 100 across 2,738 interventional studies indexed under Cardiovascular Diseases.

Browse Cardiovascular Diseases studies →

Lead sponsor

Pronova BioPharma is the lead sponsor of 11 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Males of females above 18 years of age
  • Patients awaiting carotid endarterectomy
  • Written Informed Consent

Exclusion criteria

Exclusion Criteria:

  • Patients consuming fish oil or evening primrose oil preparations
  • Patients eating > 2 oily fish meals per week
  • Patients requiring operation within 7 days
  • Pregnant or breastfeeding
  • Patients participating in other clinical studies involving treatment with drug
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Study design

Phase
Phase 3
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double
Enrollment
121 participants

Interventions

  • DrugOmega-3-acid ethyl ester 90 (n-3 PUFA)
06

What researchers measure

Primary outcomes

  1. The primary objective is to compare the carotid plaque stability after placebo versus Omega-3 fatty acid treatment by assessing structural changes associated with plaque rupture and instability. The composite endpoint includes changes in

  2. (1) the size of the lipid pool,

  3. (2) the number of foam cells,

  4. (3) the presence of haemorrhage,

  5. (4) the number of macrophages in lesions and

  6. (5) the overall density of inflammation in the plaque as a whole and

  7. (6) in fibrous caps of lesions.

Secondary outcomes

  1. (1) the size of the lipid pool,

  2. (2) the number of foam cells,

  3. (3) the presence of haemorrhage,

  4. (4) the number of macrophages in lesions and

  5. (5) the overall density of inflammation in the plaque as a whole and

  6. (6) in fibrous caps of lesions.

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Study locations

1 site
  • University of Southampton, School of medicine
    Southampton, SO17 1BJ, United Kingdom
08

References and documents

Publications

  • Thies F, Garry JM, Yaqoob P, Rerkasem K, Williams J, Shearman CP, Gallagher PJ, Calder PC, Grimble RF. Association of n-3 polyunsaturated fatty acids with stability of atherosclerotic plaques: a randomised controlled trial. Lancet. 2003 Feb 8;361(9356):477-85. doi: 10.1016/S0140-6736(03)12468-3. PubMed 12583947 ↗
  • Cawood AL, Ding R, Napper FL, Young RH, Williams JA, Ward MJ, Gudmundsen O, Vige R, Payne SP, Ye S, Shearman CP, Gallagher PJ, Grimble RF, Calder PC. Eicosapentaenoic acid (EPA) from highly concentrated n-3 fatty acid ethyl esters is incorporated into advanced atherosclerotic plaques and higher plaque EPA is associated with decreased plaque inflammation and increased stability. Atherosclerosis. 2010 Sep;212(1):252-9. doi: 10.1016/j.atherosclerosis.2010.05.022. Epub 2010 May 20. PubMed 20542512 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 20, 2006, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT00294216
Lead sponsor
Pronova BioPharma
First posted
Feb 20, 2006
Start date
Aug 2003
Completion
Jul 2005
Last update
Feb 20, 2006

Study contacts

Philip C. Calder, PhD
principal investigator · University of Southampton, School of Medicine, Institute of Human Nutrition
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Feb 2006. You cannot join it, but the record below documents what was studied.

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