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Anosmia clinical trials

The registry lists 180 studies for Anosmia across more than 10 countries. 45 are recruiting or about to start. 77 of them are mainly about Anosmia (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-10.

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Status

Completed
95
Recruiting
31
Status unknown
19
Not yet recruiting
13
Active, not recruiting
8
Withdrawn
8

Phase

Phase 2
23
Phase 4
15
Phase 3
11
Phase 1
7
Early Phase 1
4

Where

United States
59
France
25
Egypt
10
Canada
9
United Kingdom
8
Italy
7

Who runs them

Washington University School of Medicine (9) · Hospices Civils de Lyon (4) · Taichung Veterans General Hospital (3) · Johns Hopkins University (3) · Massachusetts General Hospital (3) · Institut Pasteur (3) · University Hospital, Strasbourg, France (3) · Medical University of South Carolina (3)

What is being tested here

Drugs under test in Anosmia studies, those with the most open studies first. Medicines only given beside them are not counted. How drugs are counted

DrugOpenPhase 3All
Platelet rich plasma314
Insulin112
Methylprednisolone101
Dexamethasone101
Theophylline004
Budesonide013
Mepivacaine002
Prednisolone002
Donepezil002
Acetylcysteine012

Drug classes tested here Corticosteroids 2 open

Coming up

3phase 3 studies under way
17studies finish main data collection within a year

Studies recruiting or running, from their records. “Main data collection” ends at the primary completion date, the sponsor’s own estimate, which often moves.

The 10 nearest

Who these studies take

Of the 31 Anosmia studies recruiting now, 14 (45%) set no upper age limit and 9 (29%) stop at 75 or younger. 3 (10%) take children under 18. 0 (0%) are for women only and 0 (0%) for men only; 16 (52%) take healthy volunteers.

Recruiting studies that take each age, of 31
AgeWomenMen
103 (10%)3 (10%)
1826 (84%)26 (84%)
3027 (87%)27 (87%)
4028 (90%)28 (90%)
5029 (94%)29 (94%)
6531 (100%)31 (100%)
7522 (71%)22 (71%)
8518 (58%)18 (58%)

Across all 180 studies, recruiting or not: 41% stop at 75 or younger and 28% at 65; 8% take children; 2% are for women only and 1% for men only; 35% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Anosmia studies take

Of 14 phase 2 interventional studies under Anosmia, half reached primary completion within 17 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Phase 217 mo9–25 · 14 studies——
Interventional, no phase28 mo14–37 · 50 studies—28 mo14–37 · 50 studies
Observational12 mo6–25 · 26 studies——

Each figure is the month by which half the studies had reached primary completion, with the range in which the middle half did. Studies still running count until their last registry update; studies that stopped early are left out. Phase 1 includes early phase 1; observational means prospective or not stated, as retrospective and cross-sectional studies date a window of data rather than a study. How these figures are worked out

Studies

Recruiting first, then most recently updated. Showing 50 of 180. Browse all 180 → or search them.