Aclaris Reports Positive Interim Results for ATI-052 Clinical Trial
Aclaris Therapeutics announced positive interim results from the first-in-human Phase 1a single and multiple ascending dose trial of its anti-TSLP/IL-4Ralpha bispecific antibody ATI-052. "Aclaris has experienced significant momentum across our pipeline over the past few months; consistent with that strong momentum, we are pleased to report positive interim results from our Phase 1a SAD/MAD trial of ATI-052 that exceeded our expectations," said Dr. Neal Walker, Chief Executive Officer of Aclaris. "ATI-052 demonstrated a strong safety and tolerability profile, dose proportional pharmacokinetic profile, and concentration-dependent pharmacodynamics even at the lowest dose - all of which support its best-in-class potential in a variety of inflammatory and immunological diseases due to its ability to uniquely impact multiple pathways of inflammation."
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Aclaris ATI-2138 Shows Superior Efficacy in Hair Loss Treatment
- Preclinical Results: Aclaris Therapeutics' ATI-2138 demonstrated rapid and near-complete hair regrowth in a murine model, achieving 87% regrowth at week 4 compared to Pfizer's Litfulo at 48%, indicating a significant therapeutic advantage in treating autoimmune alopecia.
- Future Trial Plans: Aclaris is set to initiate a Phase 2b trial for ATI-2138 in the first half of 2026, exploring its potential for additional alopecia indications, reflecting the company's confidence in the drug's market prospects.
- Strong Stock Performance: ACRS shares are trading at $3.88, 22.6% above the 20-day simple moving average and have increased by 58.16% over the past year, showcasing robust short-term and medium-term momentum that suggests investor optimism about the company's future.
- Analyst Ratings: The stock carries a 'Buy' rating with an average price target of $10.73, while HC Wainwright & Co. maintains a target of $16, indicating strong market recognition of Aclaris' growth potential.

Aclaris Therapeutics Added to Nasdaq Biotechnology Index Effective December 19, 2025
- Index Inclusion: Aclaris Therapeutics has been added to the Nasdaq Biotechnology Index effective December 19, 2025, marking a significant recognition in the biopharmaceutical sector that enhances its market image and investor confidence.
- Market Standards: The Nasdaq Biotechnology Index aims to track the performance of securities classified as biotechnology or pharmaceutical, and Aclaris's inclusion indicates it meets various eligibility criteria, including minimum market capitalization and average daily trading volume, thereby strengthening its competitive position in the industry.
- Annual Evaluation: The index is evaluated annually in December using a modified capitalization-weighted methodology, and Aclaris's addition may attract more investor attention, potentially improving its stock liquidity and market performance.
- R&D Potential: As a clinical-stage biopharmaceutical company focused on immuno-inflammatory diseases, Aclaris's inclusion not only elevates its industry standing but may also bring additional funding support for its R&D pipeline, aiding in the development of new products to meet patient needs.









