Positive phase III ALLEVIATE trial results for allergic conjunctivitis

Aldeyra Therapeutics, Inc. announced positive results from the Phase III ALLEVIATE Trial of 0.25% and 0.5% reproxalap topical ophthalmic solution in patients with allergic conjunctivitis. The clinical trial met the primary endpoint and the key secondary endpoint for both concentrations of reproxalap.

The double-masked, randomized, vehicle-controlled, multi-center, parallel-group conjunctival allergen challenge Phase III ALLEVIATE trial assessed the efficacy and safety of 0.25% and 0.5% concentrations of reproxalap topical ophthalmic solutions compared to vehicle in 318 patients (approximately 100 per arm) with seasonal allergic conjunctivitis. The primary efficacy endpoint was the evaluation of ocular itch score (0 to 4 scale) area under the curve from 10 to 60 minutes after allergen challenge, and the key secondary endpoint was two-point responder rate, a measure of clinical relevance. Relative to patients treated with vehicle, patients treated with 0.25% and 0.5% reproxalap demonstrated statistically significant reduction in ocular itching (p < 0.0001 and p = 0.0025, respectively), as assessed by area under the ocular itch score curve. Two-point responder rates for 0.25% and 0.5% reproxalap were statistically greater than that of vehicle-treated patients (p = 0.0005 and p = 0.0169, respectively), confirming the clinical relevance of the observed primary endpoint improvements. Both concentrations of reproxalap exhibited an anti-inflammatory profile that is distinct from standard-of-care antihistamine therapy and supports a differentiated mechanism of action for the treatment of allergic conjunctivitis. Topical ocular reproxalap has now been administered to over 700 patients across seven completed clinical trials. Consistent with prior clinical experience, in the ALLEVIATE trial there were no observed safety or tolerability concerns and no observed adverse events other than mild and transient instillation site irritation.

In preparation for subsequent clinical testing, Aldeyra is conducting clinical method development studies to assess the feasibility of measuring ocular itching induced by environmental exposure to allergen. In the second half of 2019, Aldeyra plans to meet with regulatory authorities to discuss the ALLEVIATE results and remaining clinical requirements for a potential submission of a New Drug Application to the FDA.

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