Post-marketing surveillance study of the safety of dexamethasone intravitreal implant in patients with retinal vein occlusion or noninfectious posterior segment uveitis
Received 24 July 2018
Accepted for publication 2 November 2018
Published 6 December 2018 Volume 2018:12 Pages 2519—2534
Checked for plagiarism Yes
Review by Single-blind
Peer reviewer comments 2
Editor who approved publication: Dr Scott Fraser
Adnan Tufail,1 Sue Lightman,1 Ahmed Kamal,2 Uwe Pleyer,3 Nuria María Gajate Paniagua,4 Corrine Dot,5,6 Xiao-Yan Li,7 Jenny Jiao,7 Jean Lou,7 Yehia Hashad7
For the CONSTANCE Study Group
1Moorfields Eye Hospital, London, UK; 2Aintree University Hospital, Liverpool, UK; 3University Eye Hospital, Uveitis Center, Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt University Berlin, and Berlin Institute of Health, Berlin, Germany; 4University Hospital of Burgos, Burgos, Spain; 5Department of Ophthalmology, Desgenettes Military Hospital, Lyon, France; 6French Military Health Service Academy, Val de Grâce, Paris, France; 7Allergan Plc, Irvine, CA, USA
Purpose: To evaluate the long-term safety of dexamethasone intravitreal implant (DEX) in patients treated for macular edema associated with retinal vein occlusion (RVO) or noninfectious posterior segment uveitis (NIPSU) in clinical practice.
Patients and methods: Multicenter (102 sites in France, Germany, Spain, UK), prospective, observational, post-authorization safety study in adult patients treated with DEX. Data collected up to 2 years after enrollment included serious adverse events (SAEs) and adverse events of special interest (AESIs; adverse drug reactions that are considered important risks associated with DEX and listed in the European Union Ozurdex Risk Management Plan).
Results: Overall, 803 patients (652 RVO, 151 NIPSU) received on-study DEX treatment, and 73.1% completed 24 months of follow-up; 72.6% were DEX-naïve. Median number of on-study injections per treated eye was 2 (range, 1–7); median reinjection interval was 27.1 weeks. Nonocular SAEs affected 9.5% of patients; none were considered DEX-related. Ocular SAEs (most common: cataract progression) occurred in 3.2% of treated eyes. SAEs were similar in eyes stratified by previous DEX use and number of on-study DEX injections (≤2 or >2), in both RVO and NIPSU. The most common AESIs were cataract formation and progression (20.0% and 19.2% of treated phakic eyes, n=551), increased intraocular pressure (19.0% of treated eyes), and vitreous hemorrhage (3.3% of treated eyes). Cataract progression was more frequent in baseline phakic eyes that were previously treated with DEX or received >2 on-study DEX injections.
Conclusion: The long-term safety profile of DEX was acceptable. No new safety concerns were identified.
Keywords: corticosteroid, dexamethasone, drug delivery device, retinal vein occlusion, safety profile, uveitis
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