47, XYY Syndrome

Common Name(s)

47, XYY Syndrome, 47, XYY

47, XYY syndrome is characterized by an extra copy of the Y chromosome in each of a male's cells. Males with this condition typically do not have unusual physical features and usually have normal sexual development and are able to father children. Signs and symptoms vary widely among affected males and may include being taller than average; an increased risk of learning disabilities and delayed speech and language skills; delayed motor skills (such as sitting and walking); weak muscle tone (hypotonia); hand tremors or other involuntary movements (motor tics); and behavioral and emotional difficulties. A small percentage of males with 47, XYY syndrome are diagnosed with autism spectrum disorders. Most cases are not inherited.
 

Advocacy and Support Organizations

 

Condition Specific Organizations

Following organizations serve the condition "47, XYY Syndrome" for support, advocacy or research.

Klinefelter Syndrome & Associates, Inc.

KS&A’s mission is to help individuals with one or more extra X and/or Y chromosomes and their families lead fuller and more productive lives. http://www.genetic.org/About/MissionStatement.aspx

Last Updated: 27 Nov 2012

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The Focus Foundation

The Focus Foundation is dedicated to helping children and families affected by X & Y Variations, Dyslexia, and/or Developmental Dyspraxia. The Focus Foundation believes that through increased awareness, early identification and syndrome-specific treatment, children with these conditions can reach their full potential.

Last Updated: 19 Feb 2013

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General Support Organizations

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Advocacy and Support Organizations

 

Condition Specific Organizations

Following organizations serve the condition "47, XYY Syndrome" for support, advocacy or research.

Klinefelter Syndrome & Associates, Inc.

KS&A’s mission is to help individuals with one or more extra X and/or Y chromosomes and their families lead fuller and more productive lives. http://www.genetic.org/About/MissionStatement.aspx

http://www.genetic.org

Last Updated: 27 Nov 2012

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The Focus Foundation

The Focus Foundation is dedicated to helping children and families affected by X & Y Variations, Dyslexia, and/or Developmental Dyspraxia. The Focus Foundation believes that through increased awareness, early identification and syndrome-specific treatment, children with these conditions can reach their full potential.

http://www.thefocusfoundation.org/FF/index.php

Last Updated: 19 Feb 2013

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General Support Organizations

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Scientific Literature

Articles from the PubMed Database

Research articles describe the outcome of a single study. They are the published results of original research.
The terms "47, XYY Syndrome" returned 0 free, full-text research articles on human participants.

Reviews from the PubMed Database

Review articles summarize what is currently known about a disease. They discuss research previously published by others.
The terms "47, XYY Syndrome" returned 0 free, full-text review articles on human participants.

 
 
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Symptoms, Diagnosis, and Treatment

There are currently no related results available in GeneReviews.

There are currently no related results available in Genetic Testing Registry.

 
 
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Clinical Trial Information This information is provided by ClinicalTrials.gov

X-chromosome Inactivation, Epigenetics and the Transcriptome
 

Status: Recruiting

Condition Summary: Turner Syndrome; Klinefelter Syndrome; Triple X Syndrome; 47 XYY Syndrome; Aortic Aneurysm

 

Last Updated: 19 Dec 2013

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