This study invastigates the effect of icosapent ethyl in patients with aortic valve stenosis.

Inclusion Criteria:

1. Age > 50 years
2. Mild to moderate AVS

Exclusion Criteria:

1. Bicuspid aortic valve
2. History of chest radiotherapy
3. History of rheumatic fever
4. Moderate to severe renal failure, defined as eGFR < 30 ml/min
5. Hyperparathyroidism
6. Paget's disease
7. Diagnosis of (active) malignancy in last 5 years
8. Anticipated or planned aortic valve surgery in the next 6 months
9. Life expectancy <2 years
10. Chronic atrial fibrillation
11. Use of anticoagulant medication or dual antiplatelet therapy
12. Known hypersensitivity to fish and/or shellfish
13. Known hypersensitivity to soya
14. Malabsorption syndrome and/or chronic diarrhea
15. Women of childbearing potential who are unwilling or unable to use an acceptable method of birth control [such as oral contraceptives, other hormonal contraceptives (vaginal products, skin patches, or implanted or injectable products), or mechanical products such as an intrauterine device or barrier methods (condoms)] to avoid pregnancy for the entire study.
16. Women who are pregnant or breastfeeding
17. Any other treatment or clinically relevant condition that could interfere with the conduct or interpretation of the study in the opinion of the investigator
18. Inability or unwillingness to comply with the protocol requirements, or deemed by investigator to be unfit for the study