Ozurdex Versus Ranibizumab Versus Combination for Central Retinal Vein Occlusion — ORION  

Macular Edema Clinical Trial

Official title: Ozurdex Versus Ranibizumab Versus Combination for Central Retinal Vein

Status Recruiting

Clinical Trial Summary

CRVO occurs when the vessels in the back of the eye become blocked. This creates a dangerous condition because the vessels are weak and prone to leakage. This results in the development of macular edema.

Previous studies have shown that inflammatory mediators and growth factors, such as vascular endothelial growth factor (VEGF), are elevated in patients with macular edema associated with CRVO.

Ozurdex® is approved by the Food and Drug Administration (FDA) and is available by prescription for macular edema following CRVO and branch retinal vein occlusion (BRVO). It is also indicated for the treatment of non-infectious uveitis affecting the posterior segment of the eye. The approved dosage is 0.7 mg.

Ranibizumab (Lucentis®) is approved by the Food and Drug Administration (FDA) and is available by prescription for other eye disorders, such as wet age-related macular degeneration (AMD), macular edema following CRVO or BRVO, and diabetic macular edema (DME). The approved dosage for wet AMD and macular edema following CRVO/BROV is 0.5 mg given monthly. The approved dosage for DME is 0.3 mg given monthly.

Dr. Gonzalez is conducting an investigational study on the safety and effectiveness of treating CRVO-associated Macular Edema with a combination of 0.7 mg of Ozurdex® and 0.5 mg Lucentis®, given as separate injections into the eye.

Clinical Trial Description

This is a 52 week, single masked, 1:1:1, randomized, phase IV, multicenter injection controlled clinical study with a 24 week treatment phase followed by a 24 week follow up phase. Subjects will be randomly assigned to Ozurdex every 16 weeks, Ranibizumab monthly, or combination Ozurdex every 16 weeks with Ranibizumab. Patients assigned to IV Ozurdex arm will receive a total of 2 intravitreal Ozurdex injections (in combination with monthly Ranibizumab sham) administered at 16 week intervals beginning on Day 1 and ending at Week 16. Patients assigned to IV Ranibizumab arm will receive injections administered at monthly intervals (in combination with Ozurdex sham beginning on Day 1 and Week 16). Patients assigned to IV Ozurdex with IV Ranibizumab will receive a total of 2 intravitreal Ozurdex injections administered at Week 16 intervals beginning on Day 1 and ending at Week 16 with an initial IV Ranibizumab injection administered on Day 1, then treated with Ranibizumab according to reinjection parameters assessed monthly through Week 20 (in combination with Ranibizumab sham if Ranibizumab reinjection parameters are not met). Treatment at end of study treatment phase Week 24 will be standard of care for all arms at the Investigator's discretion. ;

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Subject), Primary Purpose: Treatment

Related Conditions & MeSH terms

• Central Retinal Vein Occlusion
• Macular Edema
• Retinal Vein Occlusion

• NCT number: NCT01827722
• Study type: Interventional
• Source: Valley Retina Institute
• Contact: VICTOR H GONZALEZ, MD
• Phone: 956-631-8875
• Email: RESEARCH@VRITX.COM
• Status: Recruiting
• Phase: Phase 4
• Start date: May 2013
• Completion date: December 2016