Sinonasal microbiome transplant for chronic rhinosinusitis
Official title: Sinonasal Microbiome Transplant as a Therapy for Chronic Rhinosinusitis (CRS): A Randomized , Placebo Controlled Cross Over Trial
Run by Region Skane · NCT07184684 · Data updated 2026-11-12
This will try a sinonasal microbiome transplant to see if it reduces symptoms in people with chronic rhinosinusitis with or without nasal polyps.
Quick facts
| Phase | Phase2; Phase3 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 50 (estimated) |
| Sponsor | Region Skane Academic / other |
| Locations | 1 site (Helsingborg) |
| Status | Recruiting |
| Started | October 14, 2024 |
| Main results expected | February 2028 |
| Study ends | February 2031 |
| Registry record updated | September 22, 2025 |
| Trial ID | NCT07184684 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults with physician-verified chronic rhinosinusitis lasting more than 12 weeks, meaningful symptom burden (SNOT-22 ≥20), no recent antibiotic use, and who are willing to accept an approved donor.
✕Probably not a fit
Patients who recently took antibiotics, are receiving biologic therapies, have significant immunodeficiency or severe anatomic abnormalities, are pregnant or breastfeeding, or have low symptom scores (SNOT-22 <20) are unlikely to benefit or be eligible.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
Adults with chronic rhinosinusitis (duration >12 weeks) will receive either a donor-derived sinonasal microbiome transplant or a placebo saline transplant delivered to the nasal cavities. Donors must meet strict health criteria and be accepted by the patient, and participants with recent antibiotics, biologic therapy, pregnancy, or major immunodeficiency are excluded. Outcomes will include symptom scores and objective nasal/sinus findings over follow-up to compare the active transplant versus placebo. The protocol is conducted at the Department of ORL in Helsingborg and spans phase 2 and phase 3 testing.
Why it matters
Potential benefit: If successful, the procedure could reduce chronic sinus symptoms and decrease the need for repeated antibiotics or surgery.
How similar studies have gone: The approach is relatively novel for CRS: there are limited pilot and preclinical data suggesting microbiome modulation might help, but large controlled clinical evidence is still sparse.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria (CRS-Patients): * 2 nasal symptoms, 1 of which must be nasal obstruction or discolored discharge. * Sinusitis verified by endoscopy or CT scan * Duration \> 12 weeks. * Signed informed consent to participate in the study. Exclusion Criteria (CRS-Patients): * Antibiotic treatment in the last 3 months before study start. * Ongoing or recent participation in another clinical trial. * Any medication that might affect the results in an unpredictable manner. * Treatment with monoclonal antibodies (biologics). * Immunodeficiency other than low grade MBL deficiency. * Pregnancy or breastfeeding * Severe anatomical abnormalities. * SNOT 22 \< 20. Inclusion Criteria (Donors): * No history of sinonasal or lower airway disease within the last two years other than the common cold. * Accepted as a donor by the patient. * Signed informed consent to participate in the study. Exclusion Criteria (CRS-Patients): * Chronic rhinosinusitis. * Acute rhinosinusitis within the last two years. * Nasal polyposis * Antibiotic treatment within the last 3 months before the study start. * On going or recent participation in another clinical trial. * Findings in the pre study scan that makes the donor unsuitable.
Where it's running
-
Departement of ORL
Helsingborg, Sweden Recruiting
Study contacts
- Principal investigator: Anders Mårtensson, MD, PhD — Region Skåne, Lund University
- Study coordinator: Anders Mårtensson, MD, PhD
- Email: anders.s.martensson@gmail.com
- Phone: 0424061000
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
-
Investigating the effects of Dupilumab on nasal barrier function in chronic rhinosinusitis patients
This study is testing if the medication Dupilumab can improve the nasal barrier function in people with chronic rhinosinusitis, especially those with nasal polyps.
-
Using 3D printing to enhance nasal irrigation for chronic rhinosinusitis
This study is testing if 3D printed models of patients' noses can help people with chronic rhinosinusitis use nasal irrigation more effectively and feel better without surgery.
-
Mepolizumab with or without in-office nasal polypectomy for chronic rhinosinusitis with nasal polyps
This study tests whether adding mepolizumab, alone or with in-office nasal polypectomy, helps adults with chronic rhinosinusitis with nasal polyps who need biologic treatment.
-
Tezepelumab for Chinese adults with nasal polyps: a 24-week treatment study
This trial tests whether tezepelumab can improve nasal polyps and symptoms in Chinese adults with chronic rhinosinusitis with nasal polyps who are starting therapy.
-
Reducing how often biologic injections are given for chronic nasal polyps
This study will test whether spacing out mepolizumab or dupilumab injections to every 6–8 weeks keeps symptoms controlled in adults with partly controlled chronic rhinosinusitis with nasal polyps.
-
SHR-1905 injection for chronic rhinosinusitis with nasal polyps
This trial will test whether SHR-1905 injections help adults with chronic rhinosinusitis with nasal polyps reduce polyp size and symptoms compared with placebo.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.