SUPRACHOROIDAL INJECTION OF TRIAMCINOLONE ACETONIDE, CLS-TA, FOR MACULAR EDEMA DUE TO NONINFECTIOUS UVEITIS: A Randomized, Phase 2 Study (DOGWOOD)

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Abstract

Purpose:

Evaluate a single suprachoroidal injection of a proprietary triamcinolone acetonide suspension, CLS-TA, in subjects with macular edema due to noninfectious uveitis.

Methods:

Randomized, controlled, masked Phase 2 study. Safety and efficacy of a single suprachoroidal injection of CLS-TA (4.0 and 0.8 mg in a 4:1 ratio) were assessed at 1 and 2 months after injection. The primary efficacy endpoint was change in central subfield thickness from baseline to Month 2, assessed by spectral domain optical coherence tomography.

Results:

Twenty-two adults were enrolled. The primary endpoint was met in subjects who received suprachoroidal injection of CLS-TA 4.0 mg, mean central subfield thickness significantly decreased from baseline by 135 µm and 164 µm at Month 1 (P = 0.0056) and Month 2 (P = 0.0017), respectively. At Month 2, 69% of subjects who received 4.0 mg experienced ≥20% reduction in central subfield thickness, and 65% had improvement of best-corrected visual acuity of ≥5 Early Treatment Diabetic Retinopathy Study letters, with a mean improvement of 9.2 letters (P = 0.0004). Safety analyses supported acceptable safety/tolerability, with no corticosteroid-related increases in intraocular pressure.

Conclusion:

A single suprachoroidal injection of CLS-TA (4.0 mg; 0.1 mL) in subjects with macular edema due to noninfectious uveitis was well-tolerated, significantly reduced central subfield thickness from baseline at 2 months, and significantly improved visual acuity.

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