Modest benefit of fibrates for primary prevention of cardiovascular disease

Modest benefit of fibrates for primary prevention of cardiovascular disease

Brian McAvoy
PEARLS No.
543
Clinical question

Compared with placebo, usual care or fibrates plus other lipid-modifying drugs alone, how effective are fibrates in primary prevention of cardiovascular disease (CVD) morbidity and mortality?

Bottom line

There was moderate-quality evidence that, in the primary prevention of CVD, currently used fibrates lower the risk of a combined outcome of CVD death, non-fatal myocardial infarction (MI) or non-fatal stroke by 16%, and the risk of a combined outcome of coronary heart disease death or non-fatal MI by 21%. This was achieved without increasing or decreasing overall mortality or non-CVD mortality (low-quality evidence). Very low-quality evidence suggested no difference in discontinuation of treatment due to adverse effects in the fibrate groups compared with placebo groups. Nevertheless, the beneficial effects of fibrates in terms of a decreased risk for major CVD events without background therapy with statins appeared modest on an absolute scale (≤1%). 

Caveat

At a baseline risk of 6% or 4% over 5 years, the NNTs* were 112 and 125, respectively. There were insufficient data to analyse fibrate therapy for the prevention of diabetic retinopathy in individuals receiving treatment as CVD primary prevention therapy.

*NNT = number needed to treat to benefit one individual.

Context

Fibrates are effective for modifying atherogenic dyslipidaemia, and particularly for lowering serum triglycerides. However, evidence is lacking that fibrates for primary prevention of CVD reduce mortality and morbidity associated with CVD, or overall mortality and morbidity.

Cochrane Systematic Review

Jakob T et al. Fibrates for primary prevention of cardiovascular disease events. Cochrane Reviews, 2016, Issue 11. Art. No.: CD009753.DOI: 10.1002/14651858. CD009753.pub2. This review contains 6 studies involving 16,135 participants.