Scientists dig deep into noses to solve COVID smell mystery

NCT ID NCT06482138

Recruiting now Knowledge-focused Sponsor: Universitaire Ziekenhuizen KU Leuven Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study aims to understand why some people lose their sense of smell after a COVID-19 infection and why it doesn't come back. Researchers will collect tiny tissue samples from the nose of 240 people—some with smell problems and some without—to look for differences in cells, inflammation, and signs of the virus. The goal is to learn more about the underlying causes, not to test a new treatment.

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Conditions

The condition(s) this trial relates to.

Anosmia COVID-19

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

COVID19 OLFACTORY DYSFUNCTION

Contacts and locations

Locations

AZ Sint-Jan Brugge
RECRUITING

Bruges, West-Vlaanderen, 8000, Belgium
Cliniques Universitaires Saint-Luc
RECRUITING

Brussels, Brussels Capital, 1000, Belgium
Hôpitaux Universitaires de Genève
RECRUITING

Geneva, Canton of Geneva, 1211, Switzerland
Max Planck Research Unit for Neurogenetics
ACTIVE_NOT_RECRUITING

Frankfurt am Main, Frankfurt, 60438, Germany
UZ/KU Leuven
RECRUITING

Leuven, Vlaams-Brabant, 3000, Belgium
University Hospital Carl Gustav Carus
RECRUITING

Dresden, Dresden, 01307, Germany
University of Zurich and University Hospital Zurich
RECRUITING

Zurich, Canton of Zurich, 8091, Switzerland

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