CovidResearchTrials by Shray Alag


CovidResearchTrials Covid 19 Research using Clinical Trials (Home Page)


Report for D004408: Dysgeusia NIH

(Synonyms: Dysgeusia)

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


Correlated Drug Terms (4)


Name (Synonyms) Correlation
drug2070 Patient-Reported Online Questionnaire on Olfactory & Taste Disturbances Wiki 0.82
drug2492 SARS-CoV-2 convalescent plasma treatment Wiki 0.58
drug2692 Standard care Wiki 0.20
drug2413 Remdesivir Wiki 0.13

Correlated MeSH Terms (4)


Name (Synonyms) Correlation
D000857 Olfaction Disorders NIH 0.46
D007239 Infection NIH 0.06
D045169 Severe Acute Respiratory Syndrome NIH 0.06
D018352 Coronavirus Infections NIH 0.05

Correlated HPO Terms (1)


Name (Synonyms) Correlation
HP:0000458 Anosmia HPO 0.46

There are 3 clinical trials

Clinical Trials


1 Olfactory and Gustatory Disturbances as a Clinical Presentation of Coronavirus Disease 2019 (COVID-19) Infection in Malaysia - A Nationwide Multicentre Case-Control Study

The Malaysian COVID-19 Anosmia Study is a nationwide multicentre observational study to investigate the prevalence and characteristics of olfactory and gustatory/taste disturbances in COVID-19 infection in Malaysia, and to evaluate the predictive value of screening for these symptoms in COVID-19 infection. This study consists of two phases: the first phase is a cross-sectional study and the second phase is a case-control study. The case-control study is described here (the cross-sectional study is described in a separate ClinicalTrials.gov record).

NCT04384042 SARS-CoV Infection COVID-19 Anosmia Dysgeusia Other: Patient-Reported Online Questionnaire on Olfactory & Taste Disturbances
MeSH:Infection Coronavirus Infections Severe Acute Respiratory Syndrome Olfaction Disorders Dysgeusia
HPO:Anosmia

Primary Outcomes

Description: In the patient-reported online questionnaire, subjects will be asked regarding whether they experienced symptoms of olfactory and/or taste disturbances

Measure: Presence or absence of olfactory and taste disturbances in study participants

Time: 2 weeks prior to answering questionnaire/ prior to diagnosis of COVID-19 infection

Description: The relationship between case & control status and each exposure variable will be estimated by odds ratios and their 95% confidence intervals using conditional logistic regression models.

Measure: Adjusted odds ratio of olfactory & taste disturbances in COVID-19 infection

Time: 2 weeks prior to answering questionnaire/ prior to diagnosis of COVID-19 infection

Secondary Outcomes

Description: In the patient-reported online questionnaire, subjects will be asked regarding other symptoms they experienced when they were diagnosed with COVID-19/within the past 2 weeks of answering the questionnaire (e.g. headache, nasal congestion, fever, chills, cough, dyspnoea, gastrointestinal symptoms, eye & ear symptoms)

Measure: Clinical manifestations of study participants

Time: 2 weeks prior to answering questionnaire/ prior to diagnosis of COVID-19 infection

Description: In the patient-reported online questionnaire, subjects will be asked regarding their pre-existing health conditions (for example, obesity, diabetes, hypertension, cardiac conditions, previous head trauma, chronic rhinosinusitis, etc.)

Measure: Other pre-existing health conditions

Time: Baseline

Description: PPV reflects the probability that the presence of olfactory and taste disturbances will have a positive diagnosis of COVID-19. This is derived from dividing the number of patients with olfactory & taste disturbances with COVID-19 infection over the total number of patients with olfactory and taste disturbances, and multiplying by 100%

Measure: Positive predictive value (PPV) of olfactory and taste disturbances in predicting diagnosis of COVID-19 infection

Time: Baseline

Description: NPV reflects the probability that the absence of olfactory and taste disturbances will have a negative diagnosis of COVID-19. This is derived from dividing the number of patients without olfactory & taste disturbances and without COVID-19 infection over the total number of patients with no olfactory and taste disturbances, and multiplying by 100%

Measure: Negative predictive value (NPV) of olfactory and taste disturbances in predicting absence of COVID-19 infection

Time: Baseline

Description: The percentage of true positives, i.e. the proportion of patients with olfactory and taste disorders with COVID-19 infection. This can be calculated by dividing the number of subjects with olfactory & taste disturbances who have COVID-19 infection with the number of patients with olfactory & taste disturbances, and multiplying by 100%

Measure: Sensitivity of olfactory and taste disturbances in predicting COVID-19 infection

Time: Baseline

Description: The percentage of true negatives, i.e. the proportion of patients without olfactory and taste disorders who do not have COVID-19 infection. This can be calculated by dividing the number of subjects without olfactory & taste disturbances who do not have COVID-19 infection with the number of patients without olfactory & taste disturbances, and multiplying by 100%

Measure: Specificity of olfactory and taste disturbances in predicting COVID-19 infection

Time: Baseline

2 Olfactory and Gustatory Disturbances as a Clinical Presentation of Coronavirus Disease 2019 (COVID-19) Infection in Malaysia - A Nationwide Multicentre Cross-Sectional Study

The Malaysian COVID-19 Anosmia Study is a nationwide multicentre observational study to investigate the prevalence and characteristics of olfactory and gustatory/taste disturbances in COVID-19 infection in Malaysia, and to evaluate the predictive value of screening for these symptoms in COVID-19 infection. This study consists of two phases: the first phase is a cross-sectional study and the second phase is a case-control study. The cross-sectional study is described here (the case-control study is described in a separate ClinicalTrials.gov record).

NCT04390165 SARS-CoV Infection COVID-19 Anosmia Dysgeusia Other: Patient-Reported Online Questionnaire on Olfactory & Taste Disturbances
MeSH:Infection Coronavirus Infections Severe Acute Respiratory Syndrome Olfaction Disorders Dysgeusia
HPO:Anosmia

Primary Outcomes

Description: In the patient-reported online questionnaire, subjects will be asked regarding whether they experienced symptoms of olfactory and/or taste disturbances

Measure: Presence or absence of olfactory and taste disturbances in COVID-19 patients

Time: Within 2 weeks preceding the diagnosis of COVID-19 infection

Description: Percentage of COVID-19 patients experiencing olfactory disturbances (anosmia or hyposmia)

Measure: Prevalence of olfactory disturbances in COVID-19 patients

Time: Within 2 weeks preceding the diagnosis of COVID-19 infection

Description: Percentage of COVID-19 patients experiencing taste disturbances

Measure: Prevalence of taste disturbances in COVID-19 patients

Time: Within 2 weeks preceding the diagnosis of COVID-19 infection

Secondary Outcomes

Description: In the patient-reported online questionnaire, subjects will be asked regarding other symptoms they experienced when they were diagnosed with COVID-19 (e.g. headache, nasal congestion, fever, chills, cough, dyspnoea, gastrointestinal symptoms, eye & ear symptoms)

Measure: Clinical manifestations of study participants

Time: Within 2 weeks preceding the diagnosis of COVID-19 infection

Description: In the patient-reported online questionnaire, subjects will be asked regarding their pre-existing health conditions (for example, obesity, diabetes, hypertension, cardiac conditions, previous head trauma, chronic rhinosinusitis, etc.)

Measure: Other pre-existing health conditions

Time: Prior to diagnosis of COVID-19 infection

Description: In the patient-reported online questionnaire, subjects will be asked to rate their sense of smell and taste before their diagnosis of COVID-19 infection

Measure: Rating of baseline sense of smell & taste in COVID-19 patients prior to diagnosis of their infection

Time: Prior to 2 weeks preceding the diagnosis of COVID-19 infection (Baseline)

Description: In the patient-reported online questionnaire, subjects will be asked to rate their sense of smell and taste at the time of diagnosis of COVID-19 infection

Measure: Rating of sense of smell & taste in COVID-19 patients at time of diagnosis of their infection

Time: Within 2 weeks preceding the diagnosis of COVID-19 infection

Description: In the patient-reported online questionnaire, subjects will be asked to rate their sense of smell and taste at the time of answering questionnaire survey

Measure: Rating of sense of smell & taste in COVID-19 patients at time of answering questionnaire survey

Time: Up to 6 months

3 Detection of SARS-CoV-2 in Patients Presenting With Anosmia During COVID-19 Pandemic Era in Egypt

The study aims to test the frequency of severe acute respiratory syndrome new corona virus SARS-CoV-2 or other respiratory viruses in patients presenting with anosmia or dysgeusia to Ain Shams University Hospitals, Cairo, Egypt.

NCT04473157 Anosmia Covid19 Dysgeusia
MeSH:Olfaction Disorders Dysgeusia
HPO:Anosmia

Primary Outcomes

Description: subjective questionnaire about smell and taste

Measure: Recovery from Anosmia

Time: 3 weeks

Description: developing IgM/ IgG antibodies by rapid test

Measure: Seroconversion

Time: 3 weeks

Secondary Outcomes

Description: developing other symptoms of COVID 19

Measure: COVID 19

Time: 3 weeks


HPO Nodes