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IDP-126

Phase 3

Acne Vulgaris | Small molecule | Dermatology |Bausch Health Companies Inc.|Last Updated: Oct 30, 2025

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLEDDMC
Total Trials5
Total Enrollment1,851

FDA Designations

No designations recorded

Clinical trial landscape

IDP-126 · 5 trials · 1 indication

Phase 3 2Phase 2 2Phase 1 1
NCT04214652Clinical Study Comparing the Efficacy and Safety of IDP-126 Gel in the Treatment of Acne VulgarisAcne Vulgaris
COMPLETED180 Analytics
NCT04214639Clinical Study Comparing the Efficacy and Safety of IDP-126 Gel in the Treatment of Acne VulgarisAcne Vulgaris
COMPLETED183 Analytics
PHASE3COMPLETED
Clinical Study Comparing the Efficacy and Safety of IDP-126 Gel in the Treatment of Acne Vulgaris
Acne VulgarisUnlock trial analytics
PHASE3COMPLETED
Clinical Study Comparing the Efficacy and Safety of IDP-126 Gel in the Treatment of Acne Vulgaris
Acne VulgarisUnlock trial analytics

Study Endpoints

Primary Endpoints

Absolute Change From Baseline to Week 12 in Inflammatory Lesion Counts
12 weeks
Absolute Change From Baseline to Week 12 in Non-inflammatory Lesion Counts
12 weeks
Percentage of Participants With Success on the Evaluator's Global Severity Score
12 weeks

Success was defined as at least a two grade reduction and clear or almost clear at Week 12. The Evaluator's Global Severity Score has grades for acne severity of 0 (Clear), 1 (Almost Clear), 2 (Mild), 3 (Moderate), and 4 (Severe), with higher scores indicating worse severity.

Absolute Change From Baseline to Week 12 in Lesion Counts.
Baseline to Week 12

Inflammatory and non-inflammatory lesion counts were collected starting from the Baseline Visit.

Percentage of Subjects Who Achieve at Least a Two-grade Reduction From Baseline and Are "Clear" or "Almost Clear" at Week 12 in the Evaluator's Global Severity Score.
Baseline to Week 12

The Evaluator's Global Severity Score has grades for acne severity of 0 (Clear), 1 (Almost Clear), 2 (Mild), 3 (Moderate), and 4 (Severe), with higher scores indicating worse severity.

Inflammatory Lesion Counts
Baseline to Week 12

Absolute change from Baseline to Week 12 in mean inflammatory lesion counts

Non-inflammatory Lesion Counts
Baseline to Week 12

Absolute change from Baseline to Week 12 in mean non-inflammatory lesion counts

Incidence of Treatment-Emergent Adverse Events [Safety and Tolerability]).
All AEs will be followed from onset of the adverse event through the end of Study Day 28 visit

During the study, subjects will be assessed for the occurrence of new and ongoing AEs. Descriptions of AEs will include the dates of onset and resolution, maximum severity, seriousness, action taken regarding study drug, corrective treatment, outcome, and investigator's assessment of causality. Worsening of disease will not be considered an AE unless it results in discontinuation of the subject from the study or requires medical intervention prohibited by the protocol.

Secondary Endpoints

Inflammatory Lesion Count Percentage Changes at Week 4, 8, and 12
Baseline to Week 4, 8, 12
Noninflammatory Lesion Count Percentage Changes at Week 4, 8, and 12
Baseline to Week 4, 8, 12
Percentage of Participants With at Least a Two Grade Reduction on the Evaluator's Global Severity Score at Week 12
12 weeks
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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
IDP-126 GelEXPERIMENTAL -
IDP-126 Vehicle GelPLACEBO_COMPARATOR -
Epiduo® Forte GelACTIVE_COMPARATOREpiduo® Forte Gel (adapalene 0.3%/ 2.5% BPO) applied once daily for 12 weeks
IDP-126 Component AACTIVE_COMPARATORComponent A
IDP-126 Component BACTIVE_COMPARATORComponent B
IDP-126 Component CACTIVE_COMPARATORComponent C
Control GelACTIVE_COMPARATORGel

Interventions

NameTypeDescription
IDP-126 GelDRUGIDP-126 Gel applied topically to the face once daily for 12 weeks.
IDP-126 Vehicle GelDRUGIDP-126 Vehicle Gel applied topically to the face once daily for 12 weeks.
Epiduo® Forte GelDRUGGel applied to face once daily in the evening.
IDP-126 Component ADRUGComponent A
IDP-126 Component BDRUGComponent B
IDP-126 Component CDRUGComponent C
Control GelDRUGgel
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Eligibility Criteria

Age Range9 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites13

Inclusion Criteria: * Male or female at least 9 years of age and older. * Written and verbal informed consent must be obtained. Subjects less than age of consent must sign an assent for the study and a parent or a legal guardian must sign the informed consent (if subject reaches age of consent duri...

Countries:United StatesCanadaBelgium
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Frequently asked questions about IDP-126

What is IDP-126 used for?

IDP-126 is an investigational small molecule topical gel being developed for the treatment of acne vulgaris. It is currently in Phase 3 clinical development and has completed five trials with a total enrollment of 1,851 participants. The drug is being studied in patients as young as 9 years old.

Who makes IDP-126?

IDP-126 is being developed by Bausch Health Companies Inc. (ticker: BHC). The company is conducting clinical trials for this dermatology asset, which is in Phase 3 development for acne vulgaris. Bausch Health has completed five trials for IDP-126 with a total enrollment of 1,851 participants.

What phase is IDP-126 in?

IDP-126 is in Phase 3 clinical development for the treatment of acne vulgaris. It is an investigational drug and has not been approved by regulatory authorities. The development program includes completed Phase 1, Phase 2, and Phase 3 trials, with the most advanced studies being Phase 3.

What clinical trials is IDP-126 in?

IDP-126 has completed five clinical trials, including NCT03170388 (Phase 2, 741 patients), NCT03653403 (Phase 1, 61 patients), NCT04214652 (Phase 3, 180 patients), and NCT04892706 (Phase 2, 686 patients). All trials were conducted in patients with acne vulgaris, with some including healthy volunteers.

Is IDP-126 the same as Epiduo Forte?

IDP-126 is not the same as Epiduo Forte, but it has been directly compared to Epiduo Forte Gel in a clinical trial. The Phase 2 study NCT04892706 compared the safety and efficacy of IDP-126 Gel to Epiduo Forte Gel and vehicle gel in 686 patients with acne vulgaris.