Thrombosis Clinical Trial
Official title:
The Haemostatic Balance and Neurocognitive Phenotype in Klinefelter Syndrome - The Effect of Testosterone Treatment
Verified date | January 2018 |
Source | University of Aarhus |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Observational |
The haemostatic balance and neurocognitive capability of men with Klinefelter syndrome is compared to healthy controls by using specific biochemical assays for coagulation and fibrinolysis and a selection of neuropsychological tests and brain fMRI. Furthermore, the effect of gonadal status and any effects of long- or short-term testosterone treatment on the above mentioned parameters are investigated.
Status | Completed |
Enrollment | 90 |
Est. completion date | August 21, 2019 |
Est. primary completion date | August 21, 2019 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | Male |
Age group | 18 Years to 70 Years |
Eligibility |
Inclusion Criteria: - Klinefelter syndrome with 47 XXY karyotype - Healthy male Exclusion Criteria: - Known thrombophilia - Previous thrombotic event - Chronic or acute illness affecting the haemostatic balance (e.g. diabetes, cancer). - Previous or current disease affecting the brain - Weight above 120 kg - Current abuse of stimulants affecting the brain - Unability to complete MR-scan (e.g. claustrophobia, internal metal objects) |
Country | Name | City | State |
---|---|---|---|
Denmark | Department for Endocrinology and Internal Medicine | Aarhus |
Lead Sponsor | Collaborator |
---|---|
University of Aarhus | Aarhus University Hospital, Hospital of South West Denmark, Sygehus Lillebaelt, University of Southern Denmark |
Denmark,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Differences in thrombin generation | Thrombin generation using the CAT assay is assessed as ETP (nM thrombin), peak height (nM thrombin) and lag time (minutes). All variables are assessed at inclusion and after a 18 month follow-up. Groups are compared statistically at each time point and any changes during follow-up is also analysed. | Time 0 and after 18 months followup | |
Primary | Differences in fibrin clot properties | Fibrin clot properties is assessed by fibrin structure analysis in plasma samples. All variables are assessed at inclusion and after a 18 month follow-up. Groups are compared statistically at each time point and any changes during follow-up is also analysed. | Time 0 and after 18 months followup | |
Primary | Difference in neurocognition | neurocognition is assessed using a wide array of psychological tests (e.g. Wais-III, Stroop test, Wisconsin Card Sorting Test and others) All variables are assessed at inclusion and after a 18 month follow-up. Groups are compared statistically at each time point and any changes during follow-up is also analysed. | Time 0 and after 18 months followup | |
Secondary | Differences in blood coagulation and fibrinolysis parameters between groups | Coagulation and fibrinolysis can not be adequately assessed by analysis of a single parameter. To evaluate the overall status of these systems an array of analyses are needed, and further more need to be interpreted by experts within the field. Thus, severeal markers of coagulation and fibrinolysis including INR, APTT, single coagulation factors, PAI-1 and others are to be assessed at inclusion and after a 18 month follow-up. Groups are compared statistically at each time point and any changes during follow-up is also analysed. Besides applying statistics, the compiled results will also be interpreted by experts within the field to provide an overall characterization of the haemostatic balance in the individual groups and by comparison to each other. | Time 0 and after 18 months followup | |
Secondary | Differences in fMRI between groups | fMRI will be performed to evaluate the response in the brain to various stimuli and tests, with the overall purpose of examining speech, memory and other cognition related features. | Once at followup |
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