CovidResearchTrials by Shray Alag


CovidResearchTrials Covid 19 Research using Clinical Trials (Home Page)


Report for D000857: Olfaction Disorders NIH

(Synonyms: Olf, Olfaction Disorders)

Developed by Shray Alag
Clinical Trial MeSH HPO Drug Gene SNP Protein Mutation


Correlated Drug Terms (3)


Name (Synonyms) Correlation
drug613 Physiological serum Wiki 0.71
drug996 olfactory and gustatory tests Wiki 0.71
drug139 Budesonide Nasal Wiki 0.71

Correlated MeSH Terms (0)


Name (Synonyms) Correlation

Correlated HPO Terms (0)


Name (Synonyms) Correlation

There are 2 clinical trials

Clinical Trials


1 Qualitative and Quantitative Evaluation of Anosmia Over Time in Clinically Symptomatic Patients Tested for COVID-19 Infection

Loss of sense of smell and taste has been anecdotally reported during the covid-19 epidemic. The study investigators wanted to describe the prevalence of olfactory and gustatory dysfunction and assess the factors associated with positive SARS-CoV-2 infection.

NCT04354857 COVID-19 Other: olfactory and gustatory tests
MeSH:Olfaction Disorders
HPO:Anosmia

Primary Outcomes

Description: Positive/negative according to RT-PCR assay

Measure: SARS-CoV-2 infection status

Time: Day 0

Description: Custom-designed questionnaire (28 questions pertaining to symptoms, sense of smell and taste)

Measure: Olfactory and gustatory loss

Time: Day 0

Secondary Outcomes

Description: Ability to smell 1.5ml air freshner on a 0-100 VAS scale

Measure: Ability to detect odor

Time: Day 0

Description: Ability to smell 1.5ml air freshner on a 0-100 VAS scale

Measure: Ability to detect odor

Time: Six months

Description: Ability to taste a pinch of table salt on a 0-100 VAS scale

Measure: Ability to detect salty taste

Time: Day 0

Description: Ability to taste a pinch of table salt on a 0-100 VAS scale

Measure: Ability to detect salty taste

Time: Six months

Description: Ability to taste a pinch of sugar on a 0-100 VAS scale

Measure: Ability to detect sweet taste

Time: Day 0

Description: Ability to taste a pinch of sugar on a 0-100 VAS scale

Measure: Ability to detect sweet taste

Time: Six months

Description: Custom-designed questionnaire (28 questions pertaining to symptoms, sense of smell and taste)

Measure: Olfactory and gustatory loss

Time: Day 7

Description: Custom-designed questionnaire (28 questions pertaining to symptoms, sense of smell and taste)

Measure: Olfactory and gustatory loss

Time: Day 14

Description: Custom-designed questionnaire (28 questions pertaining to symptoms, sense of smell and taste)

Measure: Olfactory and gustatory loss

Time: Day 30

Description: Custom-designed questionnaire (28 questions pertaining to symptoms, sense of smell and taste)

Measure: Olfactory and gustatory loss

Time: Day 60

Description: % patients hospitalized

Measure: Severity of infection according to hospitalization rate

Time: End of study (six months)

Description: Custom-designed questionnaire (28 questions pertaining to symptoms, sense of smell and taste)

Measure: Olfactory and gustatory loss

Time: Six months

2 A Randomized Controlled Trial Evaluating the Efficacy of Local Budesonide Therapy in the Management of Hyposmia in COVID-19 Patients Without Signs of Severity

The initial symptoms described in the first cases of COVID-19 were mainly fever and respiratory signs. Recently, there has been an increase in cases of hyposmia without associated nasal obstruction or rhinorrhea. Although we do not yet know the long-term consequences of COVID-19 on olfaction, there is evidence in the literature demonstrating that post-viral hyposmias are an important source of long-term olfactory disorders, impacting quality of life. Usually, the treatment of viral hyposmias is based on local and/or general corticosteroid treatment combined with saline nasal irrigation at the onset of signs. Because of the possible development of severe forms of the SARS-Cov-2 infection, the French Society of Otorhinolaryngology has advised against treatment by corticosteroid therapy and nasal irrigation. However, as the virus is present in the nasal fossae on average for 20 days, persistent hyposmia at 30 days would probably result from an inflammatory or neurological damage to the nasal slits or olfactory bulb. Local treatment with corticosteroids could then be instituted from 30 days after the onset of symptoms of COVID-19 without risk of dissemination. In persistent hyposmia other than chronic rhinosinusitis, the only treatment that has proven its efficacy is nasal irrigation associated with budesonide and olfactory rehabilitation. However, this drug does not have marketing authorisation in France for this indication.

NCT04361474 Budesonide Olfaction Disorders SARS-CoV-2 Anosmia Drug: Budesonide Nasal Other: Physiological serum
MeSH:Olfaction Disorders
HPO:Anosmia

Primary Outcomes

Description: Percentage of patients with an improvement of more than 2 points on the ODORATEST score (5) after 30 days of treatment

Measure: Patient with more than 2 points on the ODORATEST

Time: 30 days


HPO Nodes