Medline ® Abstract for Reference 78
of 'Diabetic retinopathy: Prevention and treatment'
Safety and efficacy of ranibizumab in diabetic macular edema (RESOLVE Study): a 12-month, randomized, controlled, double-masked, multicenter phase II study.
Massin P, Bandello F, Garweg JG, Hansen LL, Harding SP, Larsen M, Mitchell P, Sharp D, Wolf-Schnurrbusch UE, Gekkieva M, Weichselberger A, Wolf S
Diabetes Care. 2010;33(11):2399.
OBJECTIVE: The expression of vascular endothelial growth factor (VEGF) is elevated in diabetic macular edema (DME). Ranibizumab binds to and inhibits multiple VEGF variants. We investigated the safety and efficacy of ranibizumab in DME involving the foveal center.
RESEARCH DESIGN AND METHODS: This was a 12-month, multicenter, sham-controlled, double-masked study with eyes (age>18 years, type 1 or 2 diabetes, central retinal thickness [CRT]≥300μm, and best corrected visual acuity [BCVA]of 73-39 ETDRS letters [Early Treatment Diabetic Retinopathy Study]) randomly assigned to intravitreal ranibizumab (0.3 or 0.5 mg; n=51 each) or sham (n=49). The treatment schedule comprised three monthly injections, after which treatment could be stopped/reinitiated with an opportunity for rescue laser photocoagulation (protocol-defined criteria). After month 1, dose-doubling was permitted (protocol-defined criteria, injection volume increased from 0.05 to 0.1 ml and remained at 0.1 ml thereafter). Efficacy (BCVA and CRT) and safety were compared between pooled ranibizumab and sham arms using the full analysisset (n=151, patients receiving≥1 injection).
RESULTS: At month 12, mean±SD BCVA improved from baseline by 10.3±9.1 letters with ranibizumab and declined by 1.4±14.2 letters with sham (P<0.0001). Mean CRT reduction was 194.2±135.1μm with ranibizumab and 48.4±153.4μm with sham (P<0.0001). Gain of≥10 letters BCVA from baseline occurred in 60.8% of ranibizumab and 18.4% of sham eyes (P<0.0001). Safety data were consistent with previous studies of intravitreal ranibizumab.
CONCLUSIONS: Ranibizumab is effective in improving BCVA and is well tolerated in DME. Future clinical trials are required to confirm its long-term efficacy and safety.
Assistance Publique des Hôpitaux de Paris, Ophthalmology Department, Hôpital Lariboisièe, Paris, France.