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Aclaris Therapeutics Announces Positive Full Top Line First-in-Human Results from Phase 1a Healthy Volunteer Clinical Trial of ATI-052, a Novel Potential First-in-Class Anti-TSLP/IL-4Rα Bispecific Antibody, and Announces Lichen Planus as Lead Indication for ATI-2138, an Oral ITK/JAK3 Inhibitor

$ACRSPress releaseApr 28, 2026, 6:30 AM ETRead the release

Aclaris reported positive full Phase 1a results for ATI-052, showing an estimated half-life of 45 days that supports dosing every three months and robust inhibition of inflammatory biomarkers. The company plans to initiate a Phase 2b program for ATI-052 in asthma by Q4 2026, with top-line Phase 1b results in asthma and atopic dermatitis expected in the second half of this year.

Key figures

Drug Name
ATI-052
Phase Of Trial
Phase 1a
Half life days
45
Dosing interval months
3
Market opportunity ati 2138 low usd
$1.0 billion
Market opportunity ati 2138 high usd
$4.0 billion

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