Clinical trial Recruiting at 1 site Observational

Registry for patients with smell and taste disorders

Official title: Prospective Registry of Outcome and Correlates of Chemosensory Dysfunction at the Smell & Taste Clinic of UZ Leuven

Run by Universitaire Ziekenhuizen KU Leuven · NCT06456008 · Data updated 2026-11-12

This study is trying to understand how common smell and taste problems are in people from Belgium and Flanders, especially after COVID-19, by having participants take tests and answer questions about their experiences.

Quick facts

Study typeObservational
SexAll
Enrollment500 (estimated)
SponsorUniversitaire Ziekenhuizen KU Leuven
Academic / other
Locations1 site (Leuven, Vlaams-Brabant)
StatusRecruiting
StartedDecember 6, 2022
Main results expectedJanuary 1, 2027
Study endsDecember 31, 2035
Registry record updatedDecember 18, 2025
Trial IDNCT06456008 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include individuals experiencing olfactory or taste disorders who can cooperate with testing and provide informed consent.

Probably not a fit

Patients with severe cognitive impairments that prevent them from understanding instructions or communicating their choices may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study aims to map the prevalence and characteristics of smell and taste disorders in the Belgian/Flemish population. It involves standard diagnostic tests and structured questionnaires to assess the severity, impact, and progression of these disorders. The initiative was launched in response to the increasing cases of smell dysfunction, particularly following COVID-19. Participants will provide informed consent and undergo psychophysical testing to contribute to a comprehensive registry.

Why it matters

Potential benefit: If successful, this study could enhance understanding and management of smell and taste disorders, leading to improved patient care.

How similar studies have gone: While similar observational studies have been conducted, this specific registry approach focusing on post-COVID-19 related disorders is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion criteria:

* The psychophysical testing as well as the questionnaires require a cooperative participant who can understand and follow instructions and communicate their choices.
* Informed consent is necessary upon participation for prospective registry.

There are no exclusion criteria related to sex, gender, or ethnicity. There are no exclusion criteria related to medical history or prior treatments.

Where it's running

  • UZ/KU Leuven
    Leuven, Vlaams-Brabant, Belgium
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.