A Phase 2 interventional study of Roseomonas mucosa (RSM2015) and Cardamom seeds and Placebo (sucrose) in Atopic Dermatitis and Eczema, sponsored by National Institute of Allergy and Infectious Diseases (NIAID). Recruiting at 1 site in United States. Open to participants aged 2 Years to 100 Years. Per ClinicalTrials.gov, last updated 2026-10-30.
Sponsored by National Institute of Allergy and Infectious Diseases (NIAID) · Phase 2, Interventional, and Treatment
Background:
Atopic dermatitis (AD), also called eczema, is a chronic skin condition. AD can make skin dry and itchy, and sometimes it can lead to serious health problems, such as asthma, food allergies, eye infections, and sleep problems. No cure exists for AD. Researchers know that people with AD have different kinds of harmless bacteria on their skin than do people without AD. They want to see if adding a harmless bacteria (Roseomonas mucosa) to the skin can help people with AD.
Objective:
To test a skin treatment that contains R. mucosa and ground cardamom seeds in people with AD.
Eligibility:
People aged 2 years and older with AD.
Design:
All study visits will be remote. Participants will have 5 visits over about 7 months.
Participants will be screened. Researchers will review their AD and medical history.
Participants will receive a study product in the mail. The product comes as a powder in single-use packets. Participants will be shown how to mix the powder with water in a single-use spray vial. They will spray the solution onto their skin 2 to 3 times per week for 14 weeks.
Half of participants will receive the study powder. Half will receive a placebo; the placebo looks just like the study powder but contains no bacteria. They will not know which one they have.
During 3 study visits, participants will take a skin swab. They will receive supplies in the mail to rub a cotton swab on their skin and mail it back to the researchers.
Participants may opt to have pictures taken of their AD.
Participants will fill out 4 online questionnaires.
Study Description:
This is a double-blind, randomized, phase 2b clinical trial for a topical formulation of a live biotherapeutic containing Roseomonas mucosa combined with ground cardamom seeds in a sucrose solution for patients with atopic dermatitis (AD). Participants will reconstitute the dried product in water and apply topically 2 or 3 times per week for 14 weeks. After 14 weeks, all interventions will cease, and participants will be followed for an additional 14 weeks to assess how long treatment effects last. During the course of study, we will assess disease severity (eg, itch, rash, and quality of life [QOL]) using a variety of AD assessments, ease of compliance with treatment, and changes in the microbiome profile of the skin. We hypothesize that topical treatment with Roseomonas mucosa, combined with ground cardamom seeds, will provide significantly more alleviation in AD symptoms than placebo, and that these effects will last beyond active treatment (due to the ability of the bacteria to colonize the patients' skin).
Primary Objective:
To determine if R mucosa combined with ground cardamom seeds can improve symptoms of AD in patients aged 2 and older, 14 weeks after treatment discontinuation.
Secondary Objective:
Exploratory Objectives:
Primary Endpoint:
Proportion of participants achieving a 90% improvement in Eczema Area and Severity Index (EASI90; a measure of eczema rash) from baseline(week 0) to study completion (week 28).
Secondary Endpoints:
Exploratory Endpoints:
1,591 studies on the registry are indexed under Dermatitis, Atopic; 286 are open to participants now.
This study's planned enrollment of 120 is above the median of 82 across 1,246 interventional studies indexed under Dermatitis, Atopic.
Browse Dermatitis, Atopic studies →National Institute of Allergy and Infectious Diseases (NIAID) is the lead sponsor of 2,446 studies on the registry; 179 are open to participants now.
Of its 405 completed or terminated interventional studies of FDA-regulated products, 302 (75%) have results posted.
Counted across the registry records on this site, refreshed daily.
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.
To be eligible to participate in this study, an individual must meet all of the following criteria:
Clinical diagnosis of AD, as defined by Hanifin and Rajka criteria, that has been present for >=3 months before the screening visit
Major Criteria: Must have >=3 basic features:
Minor Criteria: Must have >=3 minor features:
EXCLUSION CRITERIA:
Previous treatment of AD:
Within 4 weeks prior to the baseline visit with any of the following:
Within 12 weeks prior to the baseline visit with any of the following having been newly initiated:
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.
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.
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.
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.
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.
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
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.
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.
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.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
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.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
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.
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.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Immunosuppression
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
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.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
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.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Roseomonas and Cardamom seeds
Drug: Roseomonas mucosa (RSM2015) and Cardamom seeds
Sucrose
Drug: Placebo (sucrose)
Freeze dried packet to be reconstituted in water
Freeze dried packet to be reconstituted in water
To determine if R mucosa combined with ground cardamom seeds can improve symptoms of AD in patients aged 2 and older, 14 weeks after treatment discontinuation.
Proportion of participants achieving a 90% improvement in EASI90 (a measure of eczema rash) from baseline (week 0) to study completion (week 28).
Time frame: From Baseline (week 0 to week 28)
To determine if R mucosa combined with ground cardamom seeds can improve symptoms of AD in patients aged 2 and older, during active treatment as well as 7 weeks after treatment discontinuation.
1\. Proportion of AEs. 2. Proportion of participants using topical steroids over the course of the study.3. Change and percent change in IGA (a measure of eczema rash) from baseline (week 0) to: treatment completion (week 14), mid-washout (week 21) and study completion (week 28).4. Change and percent change in NRS (subjective measure of itch) from baseline (week 0) to: treatment completion (week 14), mid-washout (week 21), and study completion (week 28).5. Change and percent change in SCORAD (a combined metric of eczema itch, rash, QoL) from baseline (week 0) to: treatment completion (week 14), mid-washout (week 21), and study completion (week 28).6. Change and percent change in QOL measures, POEM, from baseline (week 0) to: treatment completion (week 14), mid-washout (week 21), and study completion (week 28).
Time frame: Week 7 to week 28
Plan to share: Yes — All clinical data will be striped of PII and included in the publication. All microbiome data will be deposited in the appropriate databases.
Supporting information: Clinical study report
Time frame: Upon publication.
Access criteria: Public
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
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