ClinicalTrials.gg
CompletedNCT04886739Updated Apr 1, 2026

CGB-400 Topical Gel for the Treatment of Inflammatory Lesions of Rosacea

A Phase 2 interventional study of CGB-400 and Vehicle Gel in Rosacea, sponsored by CAGE Bio Inc.. Completed at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-04-01.

Sponsored by CAGE Bio Inc. · Phase 2, Interventional, and Treatment

From the registry’s dates

  • Primary completion was Dec 2021, 4 years 10 months ago, and no results have been posted to the registry.
Phase
Phase 2
Study type
Interventional
Enrollment
78
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

This is a multicenter, randomized, double-blind, vehicle-controlled, parallel design study evaluating the efficacy and safety of CGB-400 Topical Gel for the treatment of inflammatory lesions of rosacea. The study consists of a 12-week double-blind treatment period with clinic visits at Baseline (Day 0), and Weeks 2, 4, 8, and 12.

Approximately 80 subjects will be enrolled and randomized at a 1:1 ratio to treatment with either CGB-400 Topical Gel (40%) BID or Vehicle Gel BID.

02

Conditions studied

  • Rosacea

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03

In context

Rosacea

233 studies on the registry are indexed under Rosacea; 23 are open to participants now.

This study's enrollment of 78 is above the median of 61 across 200 interventional studies indexed under Rosacea.

Browse Rosacea studies →

Lead sponsor

CAGE Bio Inc. is the lead sponsor of 10 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Outpatient, male or female of any race, 18 years of age or older. Female subjects of must have a negative UPT at Baseline and practice a reliable method of throughout the study.
  • Clinical diagnosis of papulopustular facial rosacea.
  • Investigator Global Assessment (IGA) score of 3 or 4 (i.e., moderate or severe).
  • Facial inflammatory lesion count (i.e., papules and pustules) of ≥15 and ≤50 (excluding lesions involving the eyes and scalp) with ≤2 nodules.
  • Willing to forego any other topical or non-topical treatment, cosmetic, OTC, or prescription on the study areas during treatment (other than sun protection or the study specified face wash and moisturizer).
  • Willing to use the provided skincare regimen (e.g., face wash, moisturizer) during the study.
  • In general good health as determined by medical history and physical examination at the time of screening (Investigator discretion).
  • Sign the IRB-approved ICF (which includes HIPAA) prior to any study-related procedures being performed.

Exclusion criteria

Exclusion Criteria:

  • Female subjects that are pregnant, breast-feeding, or of and not practicing reliable (as specified in Section 5.1).
  • Known or previous allergic reaction to any constituent of the Product (i.e., essential oils, fragrance, choline, phosphatidylcholine, propylene glycol, limonene, cellulose).
  • Any transient flushing syndrome.
  • Particular forms of rosacea (ocular rosacea, rosacea conglobata, rosacea fulminans, isolated rhinophyma, granulomatous rosacea, phymatous rosacea, plaque-type rosacea lesions isolated pustulosis of the chin) or other concomitant facial dermatoses that are similar to rosacea such as peri-oral dermatitis, demodicidosis, facial keratosis pilaris, seborrheic dermatitis, acute lupus erythematosus, or actinic telangiectasia.
  • Papulopustular rosacea that had required systemic treatment within the past 12 months.
  • Facial skin conditions that can interfere with reliable rosacea assessments (e.g., keloids, hypertrophic scarring, dense telangiectasia, plaque-like facial edema, recent facial surgery, etc.).
  • Facial dermatoses that may be confounded with papulopustular rosacea (e.g., perioral dermatitis, facial keratosis pilaris, seborrheic dermatitis, acne fulminans, etc.).
  • History or presence of a skin condition/disease that is located in the treatment area(s) and might interfere with the diagnosis or evaluation of study parameters (i.e., atopic dermatitis, psoriasis, significant actinic damage, vitiligo, open wounds, infection, etc.).
  • Basal cell carcinoma within 6 months of Visit 1.
  • Uncontrolled systemic disease.
  • Foreseen unprotected and intense/excessive UV exposure during the course of the study.
  • Use of prohibited concomitant medications/procedures, as specified below in Table 1, during the study or within the defined .
  • Scheduled or planned surgical procedures during the course of the study.
  • Unable or unwilling to comply with any of the study requirements.
  • Medical or psychiatric conditions, or a personal situation, that may increase the risk associated with study participation or may interfere with interpretation of study results or subject compliance and, in the opinion of the PI, makes the subject inappropriate for study entry.
  • alcohol or drug abuse, or history of poor cooperation or unreliability.
  • Exposure to any other investigational drug/device within 30 days prior to study entry
Terms in these criteria, in plain language(6)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Washout period

A planned gap after a treatment, so that its effects can lessen before the study treatment or a study assessment. Ask the study team and the doctor who prescribed it before changing any medicine.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Investigator, Outcomes assessor)
Enrollment
78 participants (actual)

Study arms

  • Experimental
    CGB-400 Topical Gel

    Topical administration twice daily for 12 weeks

    Drug: CGB-400

  • Placebo comparator
    Vehicle Gel

    Topical administration twice daily for 12 weeks

    Drug: Vehicle Gel

Interventions

  • Topical gel

  • DrugVehicle Gel

    Topical gel

06

What researchers measure

Primary outcomes

  1. Inflammatory Lesion Count

    Numerical count of inflammatory lesions (pustules and papules)

    Time frame: Week 12

  2. Investigator Global Assessment (IGA)

    * 0 - Clear; No inflammatory lesions present; at most mild erythema * 1 - Almost clear; Very mild erythema present. Very few small papules/pustules * 2 - Mild; Mild erythema. Several small papules/pustules * 3 - Moderate; Moderate erythema. Several small or large papules/pustules * 4 - Severe; Severe erythema. Numerous small and/or large papules/pustules

    Time frame: Week 12

Secondary outcomes

  1. Inflammatory Lesion Count

    Numerical count of inflammatory lesions (pustules and papules)

    Time frame: Weeks 2, 4, and 8

  2. Investigator Global Assessment (IGA)

    * 0 - Clear; No inflammatory lesions present; at most mild erythema * 1 - Almost clear; Very mild erythema present. Very few small papules/pustules * 2 - Mild; Mild erythema. Several small papules/pustules * 3 - Moderate; Moderate erythema. Several small or large papules/pustules * 4 - Severe; Severe erythema. Numerous small and/or large papules/pustules

    Time frame: Weeks 2, 4, and 8

  3. Rosacea Quality of Life (RosaQoL) Questionnaire

    Patient Reported Outcome

    Time frame: Week 12

07

Study locations

1 site
  • Cage Bio Investigative Site 1
    Fremont, California 94538, United States
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 1, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT04886739
Lead sponsor
CAGE Bio Inc.
Collaborators
ethica Clinical Research Inc.
Responsible party
Sponsor
First posted
May 14, 2021
Start date
May 7, 2021
Primary completion
Dec 22, 2021
Completion
Dec 22, 2021
Last update
Apr 1, 2026

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Aug 2022. You cannot join it, but the record below documents what was studied.

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Discussion

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Studies of the drug tested here: CGB-400

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