ClinicalTrials.gg
CompletedNCT04152226Updated Jun 17, 2025Results posted

A Trial to Evaluate the Safety and and Tolerability of DBI-001 in Patients With Tinea Pedis

A Phase 2 interventional study of Janthinobacterium lividum in Tinea Pedis, sponsored by DermBiont, Inc.. Completed at 1 site in Dominican Republic. Open to male participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-06-17.

Sponsored by DermBiont, Inc. · Phase 2, Interventional, and Treatment

From the registry’s dates

  • Registered 8 months after the study started (first participant enrolled Feb 2019, registered Oct 2019).
Phase
Phase 2
Study type
Interventional
Enrollment
12
Allocation
Non-randomized
Ages
18 Years and older
Sex
Male
01

Study summary

This is an open-label, single-dose, dose escalating evaluation of the safety and tolerability of three dose levels of DBI-001 in patients with Tinea pedis. The purpose of the current protocol is to establish the safety and tolerability of a single application of J. lividum to the feet of patients with proven T. pedis. In addition, the effect of J. lividum on the T. pedis will also be evaluated.

Read the detailed description

Open-label, single-dose, dose escalating evaluation of the safety and tolerability of three dose levels of DBI-001 in patients with Tinea pedis. The test product will be applied by study personnel at the investigational site. Each subject will have a single application of approximately 0.5 ml of the test article applied to each foot. Both affected and unaffected feet will be treated covering the web spaces, toes, toe nails as well as the plantar and lateral aspect of both feet. Each of the three groups will have 4 subjects. After the first cohort has completed their day 7 visits, if no significant tolerability or safety issues identified the second cohort will be enrolled. After the second cohort has completed the day 7 visits and if no significant tolerability of safety issues is identified the third cohort will be enrolled.

02

Conditions studied

  • Tinea Pedis

Browse trials for

03

In context

Tinea Pedis

73 studies on the registry are indexed under Tinea Pedis; 8 are open to participants now.

This study's enrollment of 12 is below the median of 128 across 66 interventional studies indexed under Tinea Pedis.

Browse Tinea Pedis studies →

Lead sponsor

DermBiont, Inc. is the lead sponsor of 13 studies on the registry; 3 are 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
Male
Accepts healthy volunteers
No

Eligibility criteria

Subjects must meet all of the following criteria to be included in the study:

  1. Witnessed, signed approved by Institutional Review Board/Independent Ethics Committee.
  2. A signed Health Information Portability and Accountability Act (HIPAA) authorization form which permits the use and disclosure of subject's individually identifiable health information.
  3. Male Subjects of any race 18 years of age and older.
  4. Subjects with a clinical diagnosis of interdigital T. pedis T. pedis interdigital defined as lesions localized to the interdigital spaces or predominantly interdigital, but may extend to other areas of the foot (the non-interdigital lesions should not be hyperkeratotic, i.e., characteristic of tinea pedis moccasin).
  5. Provisionally confirmed diagnosis at baseline by a positive potassium hydroxide (KOH) wet mount at the clinical site.
  6. The sum of the clinical signs and symptoms scores of the target lesion is at least 4 using the Grading and signs and symptoms of T. pedis detailed in section 6.6.1, including a minimum score of at least 2 for erythema AND a minimum score of 2 for either scaling/fissures or pruritus/burning (on a scale of 0-3, where 2 indicates moderate severity). -

Exclusion Criteria:

Subjects with the following will be excluded from this study:

  1. Any dermatological conditions that could interfere with clinical evaluations.
  2. Any underlying disease(s) or some other dermatological condition that requires the use of interfering topical or systemic therapy.
  3. Subjects that have not undergone the specified (s) for the following topical preparations or subjects who require the concurrent use of any of the following topical medications applied to the foot: Topical astringents and abrasives (e.g. Burrow's solution) 1 week Topical antibiotics and antifungal on the infected area (e.g. Neomycin, Miconazole, Clotrimazole, Terbinafine) 2 weeks Anti-inflammatories, , topical immunomodulators (e.g. Pimecrolimus, Tacrolimus) 4 weeks
  4. Subjects that have not undergone the specified washout period(s) for the following systemic medications or subjects who require the concurrent use of any of the following systemic medications: Corticosteroids (including intramuscular injections) (e.g. Triamcinolone acetonide) 4 weeks Antibiotics (e.g. Tetracycline, Cephalosporins, etc.) and/or Antifungal agents (e.g. Fluconazole, Itraconazole, Terbinafine, etc.) 4 weeks Systemic immunomodulators (e.g. Cyclophosphamide, Azathioprine, Biologicals-Monoclonal Antibodies. 4 weeks
  5. Treatment of any type of cancer within the last 6 months.
  6. History of any significant internal disease (which contraindicates use of live microbiome e.g. leukemia, liver failure, cardiovascular disease)
  7. Subjects who are known to be allergic to any of the test product(s) or any components in the test product(s) or history of or allergic reactions to any of the study preparations as described in the Investigator's Brochure.
  8. AIDS or AIDS related complex by medical history.
  9. Known or suspected immune suppressive medications or diseases.
  10. Diabetes mellitus Type I or II by medical history.
  11. Peripheral vascular disease based on medical history.
  12. Any subject not able to meet the study attendance requirements.
  13. Subjects who have participated in any other trial of an drug or device within 30 days prior to enrollment or participation in a research study concurrent with this study.
Terms in these criteria, in plain language(5)

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.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

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.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

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.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
12 participants (actual)

Study arms

  • Active comparator
    Cohort 1

    Cohort 1 DBI-001 Gel with 10\^6 CFUs/ml of J.lividum

    Drug: Janthinobacterium lividum

  • Active comparator
    Cohort 2

    Cohort 2 DBI-001 Gel with 10\^7 CFUs/ml of J.lividum

    Drug: Janthinobacterium lividum

  • Active comparator
    Cohort 3

    Cohort 3 DBI-001 Gel with 10\^8 CFUs/ml of J.lividum

    Drug: Janthinobacterium lividum

Interventions

  • DrugJanthinobacterium lividum

    Investigational Product

06

What researchers measure

Primary outcomes

  1. Safety Evaluation Cohort 1

    Tolerability will be evaluated through assessment of local signs and symptoms. For simplicity, as there were no local tolerability reactions, the cumulative tolerability, inclusive of Pruritus, Erythema, Edema, Scabbing/crusting, and Burning/Stinging is represented in the table. Scoring for of each Pruritus, Erythema, Edema, Scabbing/crusting, and Burning/Stinging according to the scoring system below. Tolerability events were only considered adverse events if they were grade 3 or higher or required discontinuation of test article or use of conmeds. As no Tolerability events satisfied this criteria, there were no tolerability associated adverse events. 0 = none (complete absence) 1. = mild (slight) 2. = moderate (definitely present) 3. = Severe

    Time frame: 28 days

  2. Safety Evaluation Cohort 2

    Tolerability will be evaluated through assessment of local signs and symptoms. For simplicity, as there were no local tolerability reactions, the cumulative tolerability, inclusive of Pruritus, Erythema, Edema, Scabbing/crusting, and Burning/Stinging is represented in the table. Scoring for of each Pruritus, Erythema, Edema, Scabbing/crusting, and Burning/Stinging according to the scoring system below. Tolerability events were only considered adverse events if they were grade 3 or higher or required discontinuation of test article or use of conmeds. As no Tolerability events satisfied this criteria, there were no tolerability associated adverse events. 0 = none (complete absence) 1. = mild (slight) 2. = moderate (definitely present) 3. = Severe

    Time frame: 28 days

  3. Safety Evaluation Cohort 3

    Tolerability will be evaluated through assessment of local signs and symptoms. For simplicity, as there were no local tolerability reactions, the cumulative tolerability, inclusive of Pruritus, Erythema, Edema, Scabbing/crusting, and Burning/Stinging is represented in the table. Scoring for of each Pruritus, Erythema, Edema, Scabbing/crusting, and Burning/Stinging according to the scoring system below. Tolerability events were only considered adverse events if they were grade 3 or higher or required discontinuation of test article or use of conmeds. As no Tolerability events satisfied this criteria, there were no tolerability associated adverse events. 0 = none (complete absence) 1. = mild (slight) 2. = moderate (definitely present) 3. = Severe

    Time frame: 28 days

07

Results

Posted Jun 17, 2025

Participant flow

Participant flow — Overall Study
MilestoneCohort 1Cohort 2Cohort 3
Started444
Completed444
Not completed000

Outcome measures

PrimarySafety Evaluation Cohort 1

Tolerability will be evaluated through assessment of local signs and symptoms. For simplicity, as there were no local tolerability reactions, the cumulative tolerability, inclusive of Pruritus, Erythema, Edema, Scabbing/crusting, and Burning/Stinging is represented in the table. Scoring for of each Pruritus, Erythema, Edema, Scabbing/crusting, and Burning/Stinging according to the scoring system below. Tolerability events were only considered adverse events if they were grade 3 or higher or required discontinuation of test article or use of conmeds. As no Tolerability events satisfied this criteria, there were no tolerability associated adverse events. 0 = none (complete absence) 1. = mild (slight) 2. = moderate (definitely present) 3. = Severe

Time frame:
28 days
Reported as:
Count of units · Feet
Safety Evaluation Cohort 1
Feet0=None Count n=24 (Percentage)1=Mild Count n=24 (Percentage)2=Moderate Count n=24 (Percentage)3=Severe Count n=24
Pruritus Baseline8000
Pruritus 1 Hour Post application8000
Pruritus Day 28000
Pruritus Day 38000
Pruritus Day 78000
Pruritus Day 148000
Pruritus Day 288000
Erythema Baseline8000
Erythema 1 Hour Post8000
Erythema Day 28000
Erythema Day 38000
Erythema Day 78000
Erythema Day 148000
Erythema Day 288000
Edema Baseline8000
Edema 1 Hour Post8000
Edema Day 28000
Edema Day 38000
Edema Day 78000
Edema Day 148000
Edema Day 288000
Scabbing Baseline8000
Scabbing 1 Hour Post8000
Scabbing Day 28000
Scabbing Day 38000
Scabbing Day 78000
Scabbing Day 148000
Scabbing Day 288000
Pain Baseline8000
Pain 1 Hour Post8000
Pain Day 28000
Pain Day 38000
Pain Day 78000
Pain Day 148000
Pain Day 288000
PrimarySafety Evaluation Cohort 2

Tolerability will be evaluated through assessment of local signs and symptoms. For simplicity, as there were no local tolerability reactions, the cumulative tolerability, inclusive of Pruritus, Erythema, Edema, Scabbing/crusting, and Burning/Stinging is represented in the table. Scoring for of each Pruritus, Erythema, Edema, Scabbing/crusting, and Burning/Stinging according to the scoring system below. Tolerability events were only considered adverse events if they were grade 3 or higher or required discontinuation of test article or use of conmeds. As no Tolerability events satisfied this criteria, there were no tolerability associated adverse events. 0 = none (complete absence) 1. = mild (slight) 2. = moderate (definitely present) 3. = Severe

Time frame:
28 days
Reported as:
Count of units · Feet
Safety Evaluation Cohort 2
Feet0=None Count n=24 (Percentage)1=Mild Count n=24 (Percentage)2=Moderate Count n=24 (Percentage)3=Severe Count n=24
Pruritus Baseline8000
Pruritus 1 Hour Post application8000
Pruritus Day 28000
Pruritus Day 38000
Pruritus Day 78000
Pruritus Day 148000
Pruritus Day 288000
Erythema Baseline8000
Erythema 1 Hour Post8000
Erythema Day 28000
Erythema Day 38000
Erythema Day 78000
Erythema Day 148000
Erythema Day 288000
Edema Baseline8000
Edema 1 Hour Post8000
Edema Day 28000
Edema Day 38000
Edema Day 78000
Edema Day 148000
Edema Day 288000
Scabbing Baseline8000
Scabbing 1 Hour Post8000
Scabbing Day 28000
Scabbing Day 38000
Scabbing Day 78000
Scabbing Day 148000
Scabbing Day 288000
Pain Baseline8000
Pain 1 Hour Post8000
Pain Day 28000
Pain Day 38000
Pain Day 78000
Pain Day 148000
Pain Day 288000
PrimarySafety Evaluation Cohort 3

Tolerability will be evaluated through assessment of local signs and symptoms. For simplicity, as there were no local tolerability reactions, the cumulative tolerability, inclusive of Pruritus, Erythema, Edema, Scabbing/crusting, and Burning/Stinging is represented in the table. Scoring for of each Pruritus, Erythema, Edema, Scabbing/crusting, and Burning/Stinging according to the scoring system below. Tolerability events were only considered adverse events if they were grade 3 or higher or required discontinuation of test article or use of conmeds. As no Tolerability events satisfied this criteria, there were no tolerability associated adverse events. 0 = none (complete absence) 1. = mild (slight) 2. = moderate (definitely present) 3. = Severe

Time frame:
28 days
Reported as:
Count of units · Feet
Safety Evaluation Cohort 3
Feet0=None Count n=24 (Percentage)1=Mild Count n=24 (Percentage)2=Moderate Count n=24 (Percentage)3=Severe Count n=24
Pruritus Baseline8000
Pruritus 1 Hour Post application8000
Pruritus Day 28000
Pruritus Day 38000
Pruritus Day 78000
Pruritus Day 148000
Pruritus Day 288000
Erythema Baseline8000
Erythema 1 Hour Post8000
Erythema Day 28000
Erythema Day 38000
Erythema Day 78000
Erythema Day 148000
Erythema Day 288000
Edema Baseline8000
Edema 1 Hour Post8000
Edema Day 280000
Edema Day 38000
Edema Day 78000
Edema Day 148000
Edema Day 288000
Scabbing Baseline8000
Scabbing 1 Hour Post8000
Scabbing Day 28000
Scabbing Day 38000
Scabbing Day 78000
Scabbing Day 148000
Scabbing Day 288000
Pain Baseline8000
Pain 1 Hour Post8000
Pain Day 28000
Pain Day 38000
Pain Day 78000
Pain Day 148000
Pain Day 288000

Adverse events

Collected over 28 days. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Cohort 10/4 (0%)0/4 (0%)0/4 (0%)
Cohort 20/4 (0%)0/4 (0%)0/4 (0%)
Cohort 30/4 (0%)0/4 (0%)0/4 (0%)

Baseline characteristics

Age, Continuous
Age, Continuous(years)Cohort 1Cohort 2Cohort 3Total
Mean45 ± 13.7446.8 ± 3.335.8 ± 15.9542.5 ± 12.21
Sex: Female, Male
Sex: Female, Male(Participants)Cohort 1Cohort 2Cohort 3Total
Female0000
Male44412
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Cohort 1Cohort 2Cohort 3Total
Hispanic or Latino44412
Not Hispanic or Latino0000
Unknown or Not Reported0000
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Cohort 1Cohort 2Cohort 3Total
American Indian or Alaska Native0000
Asian0000
Native Hawaiian or Other Pacific Islander0000
Black or African American44412
White0000
More than one race0000
Unknown or Not Reported0000
08

Study locations

1 site
  • Instituto Dermatologico y Cirugia de Piel
    Santo Domingo, Dominican Republic
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Feb 2019 to primary completion in Apr 2019, 2 months.

Results were first posted in Jun 2025, 6 years 1 month after primary completion.

How these figures are worked out, and which studies are left out of them.

Registered
Oct 28, 2019
First posted
Nov 5, 2019
StartActual
Feb 19, 2019
Primary completionActual
Apr 30, 2019
CompletionActual
Apr 30, 2019
Results first posted
Jun 17, 2025
Last update
Jun 17, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jun 17, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT04152226
Lead sponsor
DermBiont, Inc.
Responsible party
Sponsor
First posted
Nov 5, 2019
Start date
Feb 19, 2019
Primary completion
Apr 30, 2019
Completion
Apr 30, 2019
Results posted
Jun 17, 2025
Last update
Jun 17, 2025

Study contacts

: Daisy Blanco, MD
study director · Instituto Dermatologico y Cirugia de Piel

Oversight

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

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