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A-101

Phase 3

Common Wart | Small molecule | Infectious Disease |Aclaris Therapeutics, Inc.|Last Updated: Dec 2, 2020

Development status

Highest phase Phase 3
Registered trials 4 across 1 sponsor since Oct 2014

Target and mechanism

ModalitySmall molecule

Also known as A-101 Topical Solution, A-101 (40) Topical Solution, A-101 Solution

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials4
Total Enrollment1,245

FDA Designations

No designations recorded

Clinical trial landscape

A-101 · 9 trials · 2 indications

Phase 3 5Phase 2 4
NCT03812510Safety Study of A-101 Topical Solution for the Treatment of Common WartsCommon Wart
COMPLETED426 Analytics
NCT03687372Study of A-101 Topical Solution for the Treatment of Common WartsCommon Wart
COMPLETED503 Analytics
NCT02667236A Study of A-101 Solution 40% in Subjects With Seborrheic Keratosis.Seborrheic Keratosis
COMPLETED450 Analytics
NCT02667275A Randomized, Double-Blind, Vehicle-Controlled Study in Subjects With Seborrheic KeratosisSeborrheic Keratosis
COMPLETED487 Analytics
NCT02667288An Open-Label Safety Study of A-101 SolutionSeborrheic Keratosis
COMPLETED147 Analytics
PHASE3COMPLETED
Safety Study of A-101 Topical Solution for the Treatment of Common Warts
Common WartUnlock trial analytics
PHASE3COMPLETED
Study of A-101 Topical Solution for the Treatment of Common Warts
Common WartUnlock trial analytics
PHASE3COMPLETED
A Study of A-101 Solution 40% in Subjects With Seborrheic Keratosis.
Seborrheic KeratosisUnlock trial analytics
PHASE3COMPLETED
A Randomized, Double-Blind, Vehicle-Controlled Study in Subjects With Seborrheic Keratosis
Seborrheic KeratosisUnlock trial analytics
PHASE3COMPLETED
An Open-Label Safety Study of A-101 Solution
Seborrheic KeratosisUnlock trial analytics

Study Endpoints

Primary Endpoints

Proportion of Subjects With Treatment Emergent AEs After Application of A-101 45% for the Treatment of Common Warts
Baseline to a maximum of 341 days

Safety exposure will be measured by the proportion of subjects exposed to A-101 45% who have emergent adverse events. In order to be eligible for A-101-WART-303, subjects must have completed protocol treatment on either the A-101-WART-301 or A-101-WART-302 study. The A-101-WART-303 study was an open-label with a single arm where all subjects received A-101 Topical Solution 45% twice a week. Since A-101-WART-303 is an extension study, statistical analyses were performed by stratifying patients by treatment arms in the A-101-WART-301 or A-101-WART-302 studies. In the A-101-WART-303 study, subjects will be followed every 6 weeks to assess for a recurrence or development of new common warts. If a recurrence occurs or a new wart develops these subjects may return to the site to receive A-101 Topical Solution 45% twice a week for an additional treatment cycle of 8 weeks.

The Primary Efficacy Endpoint is the Number of Subjects Whose Identified Common Warts Are Determined to be Clear on the PWA Scale (PWA=0) at Visit 10 (Day 60)
Day 60

The primary efficacy endpoint is the number of subjects whose identified common warts are determined to be clear on the Physician Wart Assessment (PWA) scale (PWA=0) at Visit 10 (Day 60). Efficacy will be assessed using the Physician's Wart Assessment Scale (PWA) which is a 4 point scale. A higher amount of warts cleared represents a better outcome.

Proportion of Subjects With Target Lesion Clearance as Assessed by the Physician Lesion Assessment
Day 106 of the study

Proportion of subjects for whom all target lesions were judged to be clear on the Physician Lesion Assessment Scale (PLA=0) at Visit 8. The PLA Scale is a 4 point scale used by the investigator to assess each subject's target SK Lesion.

Proportion of Subjects With All Target Lesions Cleared According to Physician Lesion Assessment Scale
Study day 106

Proportion of subjects for whom all target lesions were judged to be clear on the Physician Lesion Assessment Scale (PLA=0) at Visit 8. The Physician Lesion Assessment Scale is a 4 point scale used by the investigator to assess the subject's target sk lesions.

Proportion of Subjects With Lesion Clearance
Study day 148

Proportion of subjects for whom all target lesions were judged to be clear on the Physician Lesion Assessment (PWA) Scale. The PWA scale is a 4 point scale used by the investigator to assess each subject target SK Lesion.

Mean Change in Physician's Wart Assessment Score From Baseline to Day 57
Day 57

Physician's Wart Assessment Grade Descriptor 0 Clear: No visible wart. No further treatment is indicated. 1. Near Clear: A visible wart that is less than 3 mm in maximal diameter (or length) 2. A visible wart ≥ 3 mm and \< 6 mm in maximal diameter (or length) 3. A visible wart ≥ 6 mm in maximal diameter (or length)

Physician's Wart Assessment
Day 57

Physician's Wart Assessment Grade Descriptor 0 Clear: No visible wart. No further treatment is indicated. 1. Near Clear: A visible wart that is less than 3 mm in maximal diameter (or length) 2. A visible wart ≥ 3 mm and \< 6 mm in maximal diameter (or length) 3. A visible wart ≥ 6 mm in maximal diameter (or length)

Mean of Per Subject Percentages of Target Lesions Judged to be Clear (PWA=0) at Visit 8
Day 106

Mean of per subject percentages of target lesions judged to be clear (PWA=0) at Visit 8 Grade Descriptor 0 Clear: no visible seborrheic keratosis lesion 1. Near Clear: a visible seborrheic keratosis lesion with a surface appearance different from the surrounding skin (not elevated) 2. Thin: a visible seborrheic keratosis lesion (thickness ≤ 1 mm) 3. Thick: a visible seborrheic keratosis lesion (thickness \> 1 mm)

Percentage of PLA Responders With Target Lesion Clear (PLA = 0) in Each Arm at Visit 8.
Day 106

The primary effectiveness analysis was a comparison between each A-101 group and the vehicle group based on the percentage with target lesions judged to be clear on the PLA (PLA = 0) at Visit 8. The three arms of the study are A-101 40% Topical Solution, A-101 32.5% Topical Solution, and A-101 0% Topical Solution (vehicle). The Physician's Lesion Analysis ( PLA) is a 4 point scale from 0 to 3, with 0 being lesion clear and 3 being the most severe lesion. A larger proportion of subjects with a PLA =0 is better.

Secondary Endpoints

Durability of Response: Median Number of Days All Warts Remain Clear by Treatment Group and Treatment Cycle for Subjects With All Warts Achieving a Status of Clear (PWA=0) (Treatment Cycle 1)
Baseline to a maximum of 207 days
Durability of Response: Median Number of Days All Warts Remain Clear by Treatment Group and Treatment Cycle for Subjects With All Warts Achieving a Status of Clear (PWA=0) (Treatment Cycle 2)
Baseline to a maximum of 248 days
Durability of Response: Median Number of Days All Warts Remain Clear by Treatment Group and Treatment Cycle for Subjects With All Warts Achieving a Status of Clear (PWA=0) (Treatment Cycle 3)
Baseline to a maximum of 290 days
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
A-101EXPERIMENTALTopical Solution
VehicleOTHERtopical solution
A-101 SolutionACTIVE_COMPARATORA-101 Solution 40% administered once
Vehicle SolutionPLACEBO_COMPARATORVehicle Solution administered once
ActiveEXPERIMENTALA-101 Topical Solution
A-101 Low DoseACTIVE_COMPARATORA-101 Low Dose Topical Solution
A-101 High DoseACTIVE_COMPARATORA-101 High DoseTopical Solution
A-101 40%ACTIVE_COMPARATORA-101 40% Topical Solution
A-101 32.5%ACTIVE_COMPARATORA-101 32.5% Topical Solution
A-101 Vehicle Topical SolutionPLACEBO_COMPARATORA-101 0% Topical Solution (vehicle)

Interventions

NameTypeDescription
A-101DRUGhydrogen peroxide topical solution 45%
vehicleOTHERvehicle as a topical solution
A-101 SolutionDRUGActive Drug
Vehicle SolutionOTHERPlacebo
A-101 Topical SolutionDRUGA-101 Topical Solution
A-101 Vehicle SolutionDRUGA-101 Vehicle Solution
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Eligibility Criteria

Age Range1 Year to N/A
SexALL
Healthy VolunteersNo
Study Sites46

Inclusion Criteria: * Subject or legal guardian is able to comprehend and is willing to sign an informed consent/assent for participation in this study. * Subject must have completed study participation in either A-101-WART-301 or A-101-WART-302. * Male or female ≥ 1 years old. * Subject has a clin...

Countries:United States
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Frequently asked questions about A-101

What is A-101?

A-101 is an investigational small molecule topical solution developed by Aclaris Therapeutics, Inc. for the treatment of common warts and seborrheic keratosis. It is applied directly to the skin and is being studied in Phase 3 clinical trials. A-101 is not yet approved for commercial use.

What is A-101 used for?

A-101 is being developed for the treatment of common warts and seborrheic keratosis. Common warts are benign skin growths caused by human papillomavirus, while seborrheic keratosis is a common noncancerous skin condition. A-101 is an investigational therapy and has not been approved for any indication.

Who makes A-101?

A-101 is developed by Aclaris Therapeutics, Inc., a biopharmaceutical company traded on the Nasdaq under the ticker symbol ACRS. Aclaris is responsible for the clinical development and potential commercialization of A-101.

What phase is A-101 in?

A-101 is in Phase 3 clinical development. The program includes completed Phase 2 and Phase 3 trials evaluating A-101 Topical Solution for common warts. A-101 remains investigational and has not been approved by the FDA for any indication.

What clinical trials is A-101 in?

A-101 has been studied in five completed clinical trials, including Phase 3 trials NCT03812510 and NCT03687372, and Phase 2 trials NCT03278028 and NCT03210337. These trials enrolled a total of 1,456 participants and evaluated A-101 Topical Solution in patients with common warts.

Is A-101 the same as A-101 Topical Solution?

Yes, A-101 Topical Solution, A-101 (40) Topical Solution, and A-101 Solution are alternative names for A-101. These names refer to the same investigational small molecule therapy developed by Aclaris Therapeutics for common warts and seborrheic keratosis.