Can smell training rewire the brain and immune system?
NCT ID NCT07681973
First seen Jul 02, 2026 · Last updated Jul 02, 2026
Summary
This study looks at people with smell loss caused by chronic rhinosinusitis. Participants will undergo a 3-month smell training program. Researchers will measure changes in smell function, mental health, and immune markers in blood and tissue samples. The goal is to understand the links between smell loss, cognition, and the immune system to help develop future treatments.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- smell training
- What this could lead to
- If successful, this study could identify molecules linked to smell loss, pointing toward future treatments.
- What could go wrong
- This is a small, early-stage study focused on understanding mechanisms, not testing a treatment. Results may not lead directly to therapies.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
-
About 52 people
The number the study aims to enrol. It can still change while the study runs.
- Started
-
Dec 2025
- Expected to finish
-
Mar 2027
An estimate. End dates often move.
- Lead sponsor
-
Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 years and older
- Sex
-
Anyone
- Healthy volunteers
-
Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Age less than 18 years-old * Present to rhinology clinic with CRS with nasal polyps * Sense of smell loss for any reason (other than trauma or tumor) Exclusion Criteria: * Patients \< 18 years of age * Individuals with unilateral nasal polyps * Autoimmune diseases * Ciliary disorders * Cystic fibrosis * Smell loss due to tumors or trauma
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for Chronic rhinosinusitis (CRS) are added.
Genom att skicka in godkänner du våra Användarvillkor
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
-
The places running it
1 site. The list below names each one and where it is.
-
The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
-
A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
-
The Cleveland Clinic
RECRUITINGCleveland, Ohio, 44195, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Natural oil spray may allow lower steroid doses for sinusitis sufferers
- Could climate anxiety be making your sinusitis worse?
- Nanoparticle steroid spray could transform recovery after sinus surgery
- Can a simple test predict when smell returns?
- Scientists sniff out Alzheimer's clues in nasal tissue
- Nose nerve block calms Post-Surgery agitation, study finds