- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04743466
Evaluation of Association Between Testosterone Levels, Dementia, and Adverse Mental Health Outcomes
Evaluation of a Causal Association Between Testosterone Levels, Dementia, and Adverse Mental Health Outcomes: A Mendelian Randomization Analysis
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
PRIMARY OBJECTIVE:
I. To use a Mendelian randomization study design to determine whether genetically predicted decreased testosterone levels are associated with an increased risk of dementia.
SECONDARY OBJECTIVE:
I. To examine whether genetically predicted decreased testosterone levels are associated with worse cognitive function and adverse mental health outcomes.
OUTLINE:
Patients' records from institutional or national biobanks are reviewed.
Study Type
Enrollment (Estimated)
Contacts and Locations
Study Locations
-
-
Texas
-
Houston, Texas, United States, 77030
- Recruiting
- M D Anderson Cancer Center
-
Contact:
- Kevin Nead
- Phone Number: 713-563-5155
- Email: ktnead@mdanderson.org
-
Principal Investigator:
- Kevin Nead
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Child
- Adult
- Older Adult
Accepts Healthy Volunteers
Sampling Method
Study Population
Description
Inclusion Criteria:
- Have volunteered to participate in institutional or national biobanks, mainly the UK Biobank and the Kaiser Permanente Research Bank, and those that have previously participated in studies that resulted in de-identified clinical and genetic data being make available on public archives, mainly the database of Genotypes and Phenotypes (dbGaP)
- No special populations (adults unable to consent, individuals not yet adults, pregnant women, or prisoners)
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Observational (biobank review)
Patients' records from institutional or national biobanks are reviewed.
|
Biobank records are reviewed
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Association between germline genetic predictors (single nucleotide variants) of lower testosterone levels and dementia risk
Time Frame: Up to 2 years
|
Will utilize genetic variants associated with testosterone levels at genome-wide statistical significance thresholds (P < 5 x 10-8) in published meta-analyses.
Will additionally conduct a genome-wide association study with testosterone values in the UK Biobank.
Will construct a weighted genetic risk score based on the strength of each variant's association with testosterone levels in published datasets.
The results of the weighted method will be scaled per standard deviation (SD) of testosterone levels so that effect sizes represent the odds ratio of the outcome (e.g.
dementia) per genetically predicted SD decrease in testosterone levels.
Will also utilize risk scores with less stringent significance thresholds in secondary analyses (P < 5 x 10-6).
|
Up to 2 years
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Depression
Time Frame: Up to 2 years
|
Association between low testosterone levels and depression will be examined.
Will construct a weighted genetic risk score based on the strength of each variant's association with testosterone levels in published datasets.
The results of the weighted method will be scaled per standard deviation (SD) of testosterone levels so that effect sizes represent the odds ratio of the outcome (e.g.
dementia) per genetically predicted SD decrease in testosterone levels.
Will also utilize risk scores with less stringent significance thresholds in secondary analyses (P < 5 x 10-6).
|
Up to 2 years
|
Anxiety
Time Frame: Up to 2 years
|
Association between low testosterone levels and anxiety will be examined.
Will construct a weighted genetic risk score based on the strength of each variant's association with testosterone levels in published datasets.
The results of the weighted method will be scaled per standard deviation (SD) of testosterone levels so that effect sizes represent the odds ratio of the outcome (e.g.
dementia) per genetically predicted SD decrease in testosterone levels.
Will also utilize risk scores with less stringent significance thresholds in secondary analyses (P < 5 x 10-6).
|
Up to 2 years
|
Cognitive/mental health
Time Frame: Up to 2 years
|
Association between low testosterone levels and cognitive/mental health will be examined.
Will construct a weighted genetic risk score based on the strength of each variant's association with testosterone levels in published datasets.
The results of the weighted method will be scaled per standard deviation (SD) of testosterone levels so that effect sizes represent the odds ratio of the outcome (e.g.
dementia) per genetically predicted SD decrease in testosterone levels.
Will also utilize risk scores with less stringent significance thresholds in secondary analyses (P < 5 x 10-6).
|
Up to 2 years
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Kevin Nead, M.D. Anderson Cancer Center
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Estimated)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Estimated)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 2019-1061 (Other Identifier: M D Anderson Cancer Center)
- NCI-2020-13782 (Registry Identifier: CTRP (Clinical Trial Reporting Program))
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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