Neuropsychologic, Neuroradiologic, Endocrinologic, and Genetic Aspects of Klinefelter Syndrome
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| ClinicalTrials.gov Identifier: NCT00999310 |
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Recruitment Status :
Completed
First Posted : October 21, 2009
Last Update Posted : June 2, 2015
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The purpose of this study is to investigate the following:
- Whether Klinefelter Syndrome is associated with altered total and regional brain volumes and altered brain activity.
- The influence of genetic factors and testosterone treatment on the neuropsychological phenotype, total and regional brain volumes and brain activity in men with Klinefelter syndrome.
| Condition or disease |
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| Klinefelter Syndrome |
Klinefelter syndrome (KS) is the most common sex-chromosome disorder in men with a prevalence of 1 in 660 men. Men with the syndrome have an additional X-chromosome. The syndrome is associated with cognitive and behavioral dysfunction and also with hypogonadism. Magnetic resonance imaging have pointed to different volumetric alterations in several brain structures. Several genetic factors involving the X-chromosome have been suggested to influence the neuropsychological phenotype in men with KS.
The aim of this study is to investigate the following: 1.Whether KS is associated with altered total and regional brain volumes and altered brain activity. 2.Whether genetic factors influence the neuropsychological phenotype, total and regional brain volumes, and brain activity in men with KS. 3.Whether testosterone treatment improves cognitive skills and change brain activity in men with KS.
Participants are divided in 5 groups: 1. 50 men with KS who receive testosterone treatment. 2. 50 men KS who do not receive testosterone treatment. 3. 100 age-matched control men.4. 50 age-matched control women are included as a control group for X-chromosome inactivation pattern. 5. Parents of KS subjects in group 1 and 2 are included to determine the parental origin of the supernumerary X-chromosome. Methods include a 3-hour battery of standardized neuropsychological tests to cover a broad range of cognitive domains and to assess major domains of personality. We use magnetic resonance imaging to measure total and regional brain volumes and functional magnetic resonance imaging to measure brain activity while subjects are performing a attention-demanding cognitive task. The genetic testing includes the parental origin of the supernumerary X-chromosome, the pattern of X-chromosome inactivation, androgen receptor (AR) CAGn repeat length, and gene expression profile of brain-expressed genes.
| Study Type : | Observational |
| Actual Enrollment : | 146 participants |
| Observational Model: | Case Control |
| Time Perspective: | Cross-Sectional |
| Official Title: | Neuropsychologic, Neuroradiologic, Endocrinologic, and Genetic Aspects of Klinefelter Syndrome |
| Study Start Date : | November 2009 |
| Actual Primary Completion Date : | April 2012 |
| Actual Study Completion Date : | June 2013 |
| Group/Cohort |
|---|
| Klinefelter syndrome |
| Control men |
| Control women |
| parents of Klinefelter groupe |
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| Ages Eligible for Study: | 18 Years to 60 Years (Adult) |
| Sexes Eligible for Study: | All |
| Accepts Healthy Volunteers: | Yes |
| Sampling Method: | Non-Probability Sample |
Patients with Klinefelter syndrome are recruited from endocrine and fertility clinics.
The control groups are recruited by advertising for healthy volunteers at the University of Aarhus and at the Blood Bank at the Aarhus University Hospital.
Inclusion Criteria:
- age between 18 and 60 years
- verified KS karyotype (KS patients)
Exclusion Criteria:
- present or past neurological diseases
- present or past head trauma
- contraindication to perform MR scans(Claustrophobia,Magnetic or electric foreign bodies - including cardiac pacemakers, magnetic cerebrovascular clips and electric non-removable appliances dosing medicine)
- extreme adiposity (BMI > 35 kg/m2)
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00999310
| Denmark | |
| Medical Department M, Endocrinology and Diabetes, and Medical Research Laboratories, Clinical Institute, Aarhus University Hospital, Nørrebrogade 44 | |
| Aarhus, Denmark, 8000 | |
| Principal Investigator: | Claus H Gravholt, MD, DMSCI | Medical Department M, Endocrinology and Diabetes, and Medical Research Laboratories, Clinical Institute, Aarhus University Hospital, Aarhus, Denmark | |
| Principal Investigator: | Anne S Jensen, MD | University of Aarhus |
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
| Responsible Party: | University of Aarhus |
| ClinicalTrials.gov Identifier: | NCT00999310 History of Changes |
| Other Study ID Numbers: |
M-20080238 |
| First Posted: | October 21, 2009 Key Record Dates |
| Last Update Posted: | June 2, 2015 |
| Last Verified: | September 2012 |
Keywords provided by University of Aarhus:
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Klinefelter syndrome Neuropsychology Neuroradiology Genetics |
Additional relevant MeSH terms:
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Syndrome Klinefelter Syndrome Disease Pathologic Processes Sex Chromosome Disorders of Sex Development Disorders of Sex Development Urogenital Abnormalities |
Sex Chromosome Disorders Chromosome Disorders Congenital Abnormalities Genetic Diseases, Inborn Gonadal Disorders Endocrine System Diseases Hypogonadism |