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Effect of fenofibrate on the need for laser treatment for diabetic retinopathy (FIELD study): a randomised controlled trial

The Lancet (British edition), 2007-11, Vol.370 (9600), p.1687-1697 [Peer Reviewed Journal]

Elsevier Ltd ;2007 Elsevier Ltd ;Copyright Elsevier Limited Nov 17-Nov 23, 2007 ;ISSN: 0140-6736 ;EISSN: 1474-547X ;DOI: 10.1016/S0140-6736(07)61607-9 ;PMID: 17988728 ;CODEN: LANCAO

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  • Title:
    Effect of fenofibrate on the need for laser treatment for diabetic retinopathy (FIELD study): a randomised controlled trial
  • Author: Keech, AC, Prof ; Mitchell, P, Prof ; Summanen, PA, FEBO ; O'Day, J, FRANZCO ; Davis, TME, Prof ; Moffitt, MS, DipTc ; Taskinen, M-R, Prof ; Simes, RJ, Prof ; Tse, D, PhD ; Williamson, E, PhD ; Merrifield, A, PhD ; Laatikainen, LT, Prof ; d'Emden, MC, FRACP ; Crimet, DC, MD ; O'Connell, RL, MMedStat ; Colman, PG, Prof
  • Subjects: Aged ; Clinical trials ; Diabetes ; Diabetes Mellitus, Type 2 - complications ; Diabetic Retinopathy - drug therapy ; Diabetic Retinopathy - etiology ; Diabetic Retinopathy - surgery ; Female ; Fenofibrate - therapeutic use ; Gallbladder diseases ; Hospitals ; Humans ; Hypolipidemic Agents - therapeutic use ; Internal Medicine ; Laser Therapy ; Lasers ; Lipids - blood ; Macular Edema - complications ; Macular Edema - surgery ; Male ; Medical research ; Middle Aged ; Treatment Outcome
  • Is Part Of: The Lancet (British edition), 2007-11, Vol.370 (9600), p.1687-1697
  • Description: Summary Background Laser treatment for diabetic retinopathy is often associated with visual field reduction and other ocular side-effects. Our aim was to assess whether long-term lipid-lowering therapy with fenofibrate could reduce the progression of retinopathy and the need for laser treatment in patients with type 2 diabetes mellitus. Methods The Fenofibrate Intervention and Event Lowering in Diabetes (FIELD) study was a multinational randomised trial of 9795 patients aged 50–75 years with type 2 diabetes mellitus. Eligible patients were randomly assigned to receive fenofibrate 200 mg/day (n=4895) or matching placebo (n=4900). At each clinic visit, information concerning laser treatment for diabetic retinopathy—a prespecified tertiary endpoint of the main study—was gathered. Adjudication by ophthalmologists masked to treatment allocation defined instances of laser treatment for macular oedema, proliferative retinopathy, or other eye conditions. In a substudy of 1012 patients, standardised retinal photography was done and photographs graded with Early Treatment Diabetic Retinopathy Study (ETDRS) criteria to determine the cumulative incidence of diabetic retinopathy and its component lesions. Analyses were by intention to treat. This study is registered as an International Standard Randomised Controlled Trial, number ISRCTN64783481. Findings Laser treatment was needed more frequently in participants with poorer glycaemic or blood pressure control than in those with good control of these factors, and in those with a greater burden of clinical microvascular disease, but the need for such treatment was not affected by plasma lipid concentrations. The requirement for first laser treatment for all retinopathy was significantly lower in the fenofibrate group than in the placebo group (164 [3·4%] patients on fenofibrate vs 238 [4·9%] on placebo; hazard ratio [HR] 0·69, 95% CI 0·56–0·84; p=0·0002; absolute risk reduction 1·5% [0·7–2·3]). In the ophthalmology substudy, the primary endpoint of 2-step progression of retinopathy grade did not differ significantly between the two groups overall (46 [9·6%] patients on fenofibrate vs 57 [12·3%] on placebo; p=0·19) or in the subset of patients without pre-existing retinopathy (43 [11·4%] vs 43 [11·7%]; p=0·87). By contrast, in patients with pre-existing retinopathy, significantly fewer patients on fenofibrate had a 2-step progression than did those on placebo (three [3·1%] patients vs 14 [14·6%]; p=0·004). An exploratory composite endpoint of 2-step progression of retinopathy grade, macular oedema, or laser treatments was significantly lower in the fenofibrate group than in the placebo group (HR 0·66, 95% CI 0·47–0·94; p=0·022). Interpretation Treatment with fenofibrate in individuals with type 2 diabetes mellitus reduces the need for laser treatment for diabetic retinopathy, although the mechanism of this effect does not seem to be related to plasma concentrations of lipids.
  • Publisher: England: Elsevier Ltd
  • Language: English
  • Identifier: ISSN: 0140-6736
    EISSN: 1474-547X
    DOI: 10.1016/S0140-6736(07)61607-9
    PMID: 17988728
    CODEN: LANCAO
  • Source: ProQuest One Psychology
    MEDLINE
    ProQuest Central
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