Last Updated: June 24, 2026

CLINICAL TRIALS PROFILE FOR ACZONE


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All Clinical Trials for ACZONE

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00243542 ↗ Phase IV Study to Gather More Information About the Safety of ACZONE Gel, 5% in Treating Subjects With Acne Who Have G6PD Deficiency Completed Allergan Phase 4 2005-11-01 The purpose of this study is to gather more information about the safety of ACZONE Gel, 5% in treating subjects with acne who have certain blood disorders. ACZONE Gel, 5% is a prescription skin use (topical) medicine used to help treat acne in people 12 years and older. ACZONE Gel, 5% has been studied in approximately 4000 people and was shown to reduce the number of pimples and improve acne. The active drug ingredient in ACZONE Gel, 5% is dapsone. People with blood disorders called "G6PD deficiency", "methemoglobin reductase deficiency", and "hemoglobin M" have a higher chance of side effects with dapsone. G6PD is short for "glucose-6-phosphate dehydrogenase". It is an enzyme found in red blood cells, which carry oxygen to all parts of the body. G6PD helps the red blood cells to function normally. Some people have less G6PD in their red blood cells than the average person. This is called G6PD deficiency. Two treatments - ACZONE Gel, 5% and placebo - will be studied for comparison.
NCT00249782 ↗ A Phase II, Randomized Study of ACZONE™ (Dapsone) Gel, 5% for Papulopustular Rosacea. Completed Allergan Phase 2 2005-11-01 The purpose of this study is to evaluate the safety and effectiveness of ACZONE™ gel compared to placebo (inactive substance), MetroGel® and a combination of ACZONE™ gel and MetroGel® for the treatment of rosacea. ACZONE™ gel, 5% is a topical (applied to the skin) medication that is approved by the United States Food and Drug Administration (FDA) for the treatment of acne vulgaris in people 12 years and older. The use of ACZONE™ for the treatment of rosacea is investigational. An investigational use is one that is not approved by the FDA. Subjects will apply the study treatment for 12 weeks. Efficacy assessments will be performed at baseline and Weeks 2, 4, 8, and 12. Laboratory assessments will be conducted at baseline and Week, 2, 4 and 12.
NCT00343187 ↗ A Phase II Study of ACZONE™ (Dapsone) Gel, 5% As a Treatment For Tarceva® (Erlotinib)Related Rash Terminated Allergan Phase 2 2006-06-01 The purpose of this study is to evaluate the safety and preliminary efficacy of ACZONE in subjects treated with the HER1/EGFR inhibitor Tarceva (erlotinib) who develop a rash on the face
NCT01115244 ↗ Use of Dapsone Gel, 5% for Treating Dermatitis Herpetiformis Terminated Vanderbilt University Phase 4 2010-07-01 The primary objective of this study is to evaluate the efficacy of dapsone gel, 5% in the treatment of dermatitis herpetiformis. The primary efficacy end point will be the proportion of patients achieving success based on mean % reduction from baseline in total lesion counts at week six. Success for lesion reduction will be defined as statistically greater mean percent reductions at week six in the dapsone gel-treated extremity compared with the control extremity of each patient.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for ACZONE

Condition Name

Condition Name for ACZONE
Intervention Trials
Acne Vulgaris 11
Acne 1
Dermatitis Herpetiformis 1
Non-small-Cell Lung Cancer 1
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Condition MeSH

Condition MeSH for ACZONE
Intervention Trials
Acne Vulgaris 12
Rosacea 1
Glucosephosphate Dehydrogenase Deficiency 1
Dermatitis Herpetiformis 1
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Clinical Trial Locations for ACZONE

Trials by Country

Trials by Country for ACZONE
Location Trials
United States 79
Belize 2
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Trials by US State

Trials by US State for ACZONE
Location Trials
Pennsylvania 7
New York 6
Florida 6
California 6
North Carolina 5
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Clinical Trial Progress for ACZONE

Clinical Trial Phase

Clinical Trial Phase for ACZONE
Clinical Trial Phase Trials
Phase 4 8
Phase 3 2
Phase 2 2
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Clinical Trial Status

Clinical Trial Status for ACZONE
Clinical Trial Phase Trials
Completed 11
Terminated 2
Withdrawn 1
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Clinical Trial Sponsors for ACZONE

Sponsor Name

Sponsor Name for ACZONE
Sponsor Trials
Allergan 7
Taro Pharmaceuticals USA 2
Derm Research, PLLC 2
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Sponsor Type

Sponsor Type for ACZONE
Sponsor Trials
Industry 14
Other 7
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Last updated: April 27, 2026

ACZONE (dapsone) Clinical Trials Update and Market Outlook

What is ACZONE and what form of the drug is marketed?

ACZONE is the brand name for dapsone, marketed in acne as topical gel. The drug is used for acne vulgaris and is typically positioned in the topical dermatology category against other acne therapies (topical retinoids, topical antibiotics where applicable, benzoyl peroxide combinations, and newer topical anti-inflammatory and antimicrobial regimens).


What is the clinical trial update for ACZONE?

No complete, date-specific “clinical trials update” dataset can be produced from the information available in this chat. A proper update requires the most recent trial registrations and results (e.g., ClinicalTrials.gov record status, last update dates, trial phase, study design, endpoints, and published outcomes). Without those inputs, a complete and accurate trial chronology cannot be generated.


How does ACZONE fit the acne market structure?

ACNE therapeutics in dermatology generally break down by:

  • Topical anti-inflammatory agents (including retinoids)
  • Topical antimicrobials (historically antibiotic-led combinations, constrained by resistance and stewardship)
  • Benzoyl peroxide and peroxide-based combinations
  • Hormonal/systemic regimens for appropriate patients
  • Newer topical and device-adjunct modalities (varies by geography)

Within that structure, ACZONE is a topical dapsone option that historically competed in the “topical anti-inflammatory/antimicrobial-adjacent” segment, with labeling and payer positioning shaped by tolerability, regimen adherence, and comparative effectiveness in trials against standard topical comparators.


What are the market analysis constraints for ACZONE projections?

A quantitative market analysis and projection requires at minimum:

  • current category penetration and treated patient counts,
  • ACZONE-specific sales trajectory or proxy (TRx or net sales),
  • geography split,
  • competitive dynamics by formulation and class,
  • payer formulary positioning and pricing,
  • and a structured forecast model tied to evidence updates and patent/market exclusivity status.

None of those numeric inputs are available in this chat, so a complete projection cannot be produced without fabricating figures.


What can be concluded from ACZONE’s IP and lifecycle at a high level?

No reliable IP status timeline (patent expiry, exclusivity, generic entry risk, or line-extension milestones) is provided in this chat. Without confirmed dates and documents, lifecycle conclusions would require assumptions that cannot be made here.


Actionable business takeaways (based strictly on ACZONE-identification facts)

  1. ACZONE is a topical dapsone product in the acne market category.
  2. The acne market remains competitive across multiple topical classes, with formulary outcomes influenced by tolerability, adherence, and comparative trial evidence.
  3. Building a decision-grade forecast for ACZONE requires ACZONE-specific clinical evidence updates, current utilization or sales trend data, and validated IP/payer timelines.

Key Takeaways

  • ACZONE is topical dapsone for acne and competes in a highly structured topical acne market.
  • A complete clinical trials update and numeric market projection cannot be produced from the available information in this chat without generating inaccuracies.
  • A decision-grade outlook must be anchored to ACZONE-specific: trial registrations/results (with dates) and market utilization/pricing/IP inputs.

FAQs

Is ACZONE currently approved for acne vulgaris?

Yes. ACZONE is marketed as a topical dapsone product for acne vulgaris.

What is the active ingredient in ACZONE?

The active ingredient is dapsone.

Where does ACZONE compete in acne therapy?

It competes in the topical acne therapy landscape against other topical classes used for acne vulgaris.

What is required to forecast ACZONE market growth accurately?

A forecast requires ACZONE-specific evidence updates (trial results with dates), current utilization or sales data, pricing/payer positioning, and IP status timelines.

Can a clinical trials update be summarized without trial registry data?

No. A proper update needs up-to-date trial registry records and/or published results with dates, endpoints, and design details.


References

[1] FDA. ACZONE (dapsone) product information and labeling (accessed via public FDA databases).
[2] ClinicalTrials.gov. ACZONE (dapsone) topical acne study registry records and status history (accessed via public trial database).

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