Sinonasal Microbiome Transplant as a Therapy for Chronic Rhinosinusitis (CRS).

NCT ID: NCT07184684

Last Updated: 2025-09-22

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE2/PHASE3

Total Enrollment

50 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-10-14

Study Completion Date

2031-02-28

Brief Summary

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Chronic rhinosinusitis (CRS) is a disease associated with impaired quality of life and substantial societal costs. Much is still uncertain regarding the underlying etiology of the disease. Current treatment protocols are based on observed effects rather than a mechanistic understanding of the disease and thus patients often report unsatisfactory symptom reduction despite treatment with maximal medical therapy and even surgery.

CRS is subgrouped phenotypically based on whether or not polyps are observed. Recently an endotypical differentiation reflecting the underlying inflammatory profile has been recommended as well, especially for research.

Increasing interest in the role of the commensal microbiome inflammatory diseases has followed a growing understanding of its profound impact on the human immune system. Current research indicates that instability and dysfunction of the microbiome is linked to inflammatory disease rather than compositional differences. Previous research has shown that microbiome transplants are effective in restoring the commensal microbiome and reducing inflammation in gastrointestinal disease and in a previous pilot study the investigators showed that sinonasal microbiome transplants are feasible and were associated with reduced symptoms in chronic rhinosinusitis without nasal polyps (CRSsNP).

This study will examine if the positive effect on patients symptoms observed in a previous pilot study are sustained in a placebo controlled, blinded study. In addition to this the study will also examine any differences in microbiome structure, stability, and function between patients with CRS and healthy donors as well as any correlation to disease phenotype or inflammatory endotype.

Detailed Description

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Conditions

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Chronic Rhinosinusitis Without Nasal Polyps Chronic Rhinosinusitis With Nasal Polyps

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

CROSSOVER

All participants will run through the study twice with a 7 month wash-out in between. Once the participant will run through the microbiome translant arm and once through the placebo arm.. Participants and investigators will be blinded to the if the participant gets microbiome transplantation or placebo.
Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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Microbiome transplant

The study subject is examined before and after recieving 13 days of antibiotics followed by 5 concecutive days of microbiome transplant.

Group Type ACTIVE_COMPARATOR

Sinonasal microbiome transplant procedure.

Intervention Type PROCEDURE

A sinonasal microbiome transplant obtained from a healthy donor and administered as a nasal lavage once daily for five consecutive days.

Placebo transplant

The study subject is examined before and after recieving 13 days of antibiotics followed by 5 concecutive days of placebo (saline) transplant.

Group Type PLACEBO_COMPARATOR

Placebo saline transplant

Intervention Type OTHER

Placebo transplant containing saline administered as a nasala lavage once daily for five consecutive days.

Interventions

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Sinonasal microbiome transplant procedure.

A sinonasal microbiome transplant obtained from a healthy donor and administered as a nasal lavage once daily for five consecutive days.

Intervention Type PROCEDURE

Placebo saline transplant

Placebo transplant containing saline administered as a nasala lavage once daily for five consecutive days.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* 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.


* 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

* 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.


* 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.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Region Skane

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Anders Mårtensson, MD, PhD

Role: PRINCIPAL_INVESTIGATOR

Region Skåne, Lund University

Locations

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Departement of ORL

Helsingborg, , Sweden

Site Status RECRUITING

Countries

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Sweden

Central Contacts

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Anders Mårtensson, MD, PhD

Role: CONTACT

0424061000

Frida Blixt, MD

Role: CONTACT

0424061000

Facility Contacts

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Anders Mårtensson, MD, PhD

Role: primary

+46768617200

References

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Other Identifiers

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Dnr 2024-03308-02

Identifier Type: -

Identifier Source: org_study_id

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