Icosapent Ethyl
| Evidence Level: L5 | Predicted Indications: 1 |
Table of Contents
Icosapent Ethyl: Hemoglobinopathy
One-Sentence Summary
Icosapent ethyl is a highly purified eicosapentaenoic acid (EPA) ethyl ester, originally used to treat hypertriglyceridemia. The TxGNN model predicts it may be effective for hemoglobinopathy, with 1 registered clinical trial (withdrawn, no participants) and 19 publications currently supporting this direction, including several analyses of the Phase 3 REDUCE-IT trial.
Quick Overview
| Item | Content |
|---|---|
| Original Indication | Not recorded in the local data |
| Predicted New Indication | Hemoglobinopathy |
| TxGNN Prediction Score | 0.9909 |
| Evidence Level | L5 (REDUCE-IT-derived evidence; see note below) |
| Australia Market Status | Listed on the PBS Schedule (1 of 1 items) – TGA (ARTG) registration status is not included in this data |
| Number of PBS Items | 1 (valid: 1) |
| Recommended Decision | Proceed with Guardrails |
Note: the top-ranked prediction (hemoglobinopathy) has model prediction only (L5, Hold). The L1 grading rests on the REDUCE-IT trial as reported in the supplied literature. The trial registry record itself was not among the supplied data.
Why is This Prediction Reasonable?
Detailed mechanism of action data is not available in the data compiled for this report. Based on the supplied literature, icosapent ethyl is a purified EPA ethyl ester that lowers triglycerides and triglyceride-rich lipoproteins. It is also reported to have anti-inflammatory, plaque-stabilising and antithrombotic effects.
Elevated triglycerides are linked to residual cardiovascular risk even when LDL cholesterol is well controlled.
The literature includes multiple REDUCE-IT analyses, a large randomised trial in statin-treated patients with elevated triglycerides. The benefit is established for the REDUCE-IT population (statin-treated, elevated triglycerides, high cardiovascular risk). This indication is also close to existing cardiovascular risk-reduction use, so it may be label-adjacent rather than a truly novel repurposing.
Clinical Trial Evidence
| Trial Number | Phase | Status | Enrolment | Key Findings |
|---|---|---|---|---|
| NCT06280976 | Phase 4 | Withdrawn | 0 | ART-CAP: coronary CT angiography to guide plaque assessment and preventive drug therapy. Withdrawn with no enrolment, so no usable efficacy or safety data |
No ANZCTR trial identifiers were available in the data compiled for this report.
Literature Evidence
| PMID | Year | Type | Journal | Key Findings |
|---|---|---|---|---|
| 30415628 | 2019 | RCT | N Engl J Med | REDUCE-IT: icosapent ethyl and cardiovascular risk reduction in patients with elevated triglycerides |
| 38873793 | 2024 | RCT | Circulation | RESPECT-EPA: statin plus EPA for secondary prevention in coronary artery disease with a low EPA/AA ratio |
| 31567003 | 2019 | Meta-analysis | J Am Heart Assoc | Marine omega-3 and cardiovascular disease across 13 RCTs (127,477 participants) |
| 35483753 | 2022 | RCT post-hoc | J Am Coll Cardiol | REDUCE-IT: reduced cardiovascular events and mortality in patients with prior MI |
| 40982548 | 2025 | RCT post-hoc | Eur J Prev Cardiol | REDUCE-IT: benefit across MI types and sizes |
| 38678009 | 2024 | RCT post-hoc | Eur Heart J Cardiovasc Pharmacother | REDUCE-IT: effects by baseline residual risk in ASCVD |
| 34710343 | 2021 | Subgroup analysis | Circulation | REDUCE-IT CABG: reduced ischaemic events in patients with prior bypass surgery |
| 36802845 | 2023 | Post-hoc analysis | J Am Heart Assoc | Benefit with and without atrial fibrillation; AF/flutter hospitalisation was higher with icosapent ethyl (3.1% vs 2.1%) |
| 40752806 | 2025 | Cohort | Int J Cardiol | CALLINICUS-Hellas registry: eligibility for icosapent ethyl after acute coronary syndrome and re-infarction risk |
| 42628912 | 2026 | Preclinical (mouse) | J Mol Cell Cardiol | GPR120 activation improves post-MI cardiac remodelling |
Australia Market Information
| ARTG Number | Product Name | Dosage Form | Approved Indication |
|---|---|---|---|
| ARTG 14617H | Vazkepa | Capsule 998 mg (oral) | Not available in the data compiled for this report |
Safety Considerations
- Atrial fibrillation/flutter: REDUCE-IT analyses reported higher AF/flutter hospitalisation with icosapent ethyl than placebo (3.1% vs 2.1%).
- Evidence caveats: the literature notes concerns about the mineral-oil placebo, bleeding risk, and neutral results for other omega-3 products (such as mixed EPA/DHA formulations).
No drug interactions were identified in the data compiled for this report. For contraindications and other warnings, please refer to the TGA-approved Product Information (PI).
Conclusion and Next Steps
Decision: Proceed with Guardrails
Rationale: The benefit should not be generalised beyond statin-treated, high-risk patients with elevated triglycerides. The other nine predictions have no direct evidence (hemoglobinopathy, thalassaemia, rheumatoid arthritis and others: Hold; MI subtypes: research question only).
To proceed, the following is needed:
- Confirm the ARTG-approved indication for Vazkepa and whether MI-related risk reduction is already covered (label-adjacent)
- Review the PI for warnings and contraindications, particularly AF and bleeding risk
- Retrieve the mechanism of action data from DrugBank
- Define the eligible population (statin-treated, elevated triglycerides, established cardiovascular disease or diabetes with risk factors)
- Verify REDUCE-IT trial registry details and any ANZCTR registrations
Disclaimer
This content is for research purposes only and does not constitute medical advice. Clinical validation is required before any clinical application.