"We are encouraged by this preliminary data demonstrating the safety and
efficacy of both AN2728 and AN2898 in atopic dermatitis and believe it
supports further development of one or both of these compounds in this
The Phase 2a, six-week, double-blind, bilateral trial enrolled 46 patients, randomized 1:1 to treat atopic dermatitis lesions twice daily with either 2% AN2728 ointment and vehicle or 1% AN2898 ointment and vehicle. 25 patients were treated with AN2728, and 21 patients were treated with AN2898. The primary endpoint was the improvement in lesions treated with AN2728 ointment or AN2898 ointment compared to lesions treated with vehicle at 28 days. Improvement was defined as a decrease in ADSI score, which is the sum of the severity scores of five clinical features (erythema, pruritis, exudation, excoriation and lichenification) from 0 (none) to 3 (severe) for each feature, for a total score of 0 to 15.
AN2728 met the primary endpoint with 64% of patient lesions treated with AN2728 showing improvement in ADSI score from baseline compared to 24% of lesions treated with vehicle (P = 0.05). Lesions treated with AN2728 showed a 61% mean improvement in ADSI score at day 28 compared to 43% mean improvement in ADSI score for lesions treated with vehicle (P = 0.03). The proportion of lesions achieving total or partial clearance (ADSI score ≤ 2.0) at day 28 was 48% for lesions treated with AN2728 compared to 20% for lesions treated with vehicle. AN2728 has previously demonstrated safety and efficacy in multiple Phase 1 and 2 trials for mild-to-moderate psoriasis.
AN2898 also met the primary endpoint with 71% of patient lesions treated with AN2898 showing improvement in ADSI score from baseline compared to 14% of lesions treated with vehicle (P = 0.01). Lesions treated with AN2898 showed a 68% mean improvement in ADSI score at day 28 compared to 45% mean improvement in ADSI score for lesions treated with vehicle (P = 0.02). The proportion of lesions achieving total or partial clearance (ADSI score ≤ 2.0) at day 28 was 48% for lesions treated with AN2898 compared to 33% for lesions treated with vehicle.
Development Plans in Atopic Dermatitis
Anacor anticipates that it will complete its review of this Phase 2a trial for AN2728 and AN2898 for the treatment of atopic dermatitis in early 2012. Following this review, Anacor plans to communicate the next steps in the development plans for one or both of these drug candidates in atopic dermatitis. Anacor does not anticipate that costs related to development in atopic dermatitis in 2012 will materially affect the Company's previously stated ability to complete its two Phase 3 trials for tavaborole in onychomycosis and its first Phase 3 trial for AN2728 in psoriasis with its current financial resources.
About Atopic Dermatitis and Current Treatment Options
Atopic dermatitis is a chronic rash characterized by inflammation and
itching. In 2007, Datamonitor reported that atopic dermatitis affected
approximately 40 million people across the seven major pharmaceutical
markets. The condition most commonly appears in childhood, with up to
20% of children in
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Anacor is a biopharmaceutical company focused on discovering, developing and commercializing novel small-molecule therapeutics derived from its boron chemistry platform. Anacor has discovered six compounds that are currently in development including its three lead programs: tavaborole, a topical antifungal for the treatment of onychomycosis; AN2728, a topical anti-inflammatory PDE-4 inhibitor for the treatment of psoriasis and atopic dermatitis; and GSK 2251052, or GSK ‘052 (formerly referred to as AN3365), a systemic antibiotic for the treatment of infections caused by Gram-negative bacteria, which has been licensed to GlaxoSmithKline under the companies' research and development agreement. Anacor is also developing AN2718 as a topical antifungal product candidate for the treatment of onychomycosis and skin fungal infections and AN2898 as a topical anti-inflammatory product candidate for the treatment of psoriasis and atopic dermatitis. In addition, AN8194 has been licensed by Eli Lilly and Company and is in development for an animal health application. For more information, visit http://www.anacor.com.
This press release may contain forward-looking statements that relate to future events including the development and commercialization of AN2728 and AN2898, the representative nature of the Phase 2a study and reported results as indicative of future clinical trials in support of regulatory approval, the timing and potential for initiation, enrollment and conduct of future trials of AN2728 and AN2898 in atopic dermatitis and financial guidance with respect to costs associated with potential future trials of AN2728 and AN2898 in atopic dermatitis, costs associated with the first Phase 3 trial of AN2728 in psoriasis and costs associated with the two Phase 3 trials of tavaborole in onychomycosis. These forward looking statements involve known and unknown risks, uncertainties and other factors that could cause actual levels of activity, performance or achievement to differ materially from those expressed or implied by these forward-looking statements, including risks related to enrollment and successful completion of our trials, risk of unforeseen side effects and risks related to regulatory approval of new drug candidates. These statements reflect the views of Anacor as of the date of this press release with respect to future events and, except as required by law, it undertakes no obligation to update or revise publicly any forward-looking statements, whether as a result of new information, future events or otherwise after the date of this press release.
Director, Investor Relations and Corporate Communications
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