Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search help
11 results
  1. xmlghr-summaries.xml 
    https://medlineplus.gov/download/ghr-summaries.xml
    ... health-condition-summary><health-condition-summary ><name >49,XXXXY syndrome</name><ghr-page >https://medlineplus.gov/genetics/condition/ ... role >description</text-role><html ><html:p >49,XXXXY syndrome is a chromosomal condition that causes intellectual disabilities, ...
  2. xmlTopicIndex.xml 
    https://medlineplus.gov/download/TopicIndex.xml
    ... gov/genetics/condition/49xxxxy-syndrome</url><title >49,XXXXY syndrome</title><other_names ><other_name >49,XXXXY chromosomal anomaly</other_name><other_name >Chromosome XXXXY syndrome</other_name><other_name >XXXXY aneuploidy</other_name>< ...
  3. Klinefelter Syndrome 
    https://medlineplus.gov/klinefeltersyndrome.html
    Klinefelter syndrome (KS) is a condition that occurs in men who have an extra X chromosome. Read about the common symptoms and treatments. ... What is Klinefelter ...
  4. Nonsyndromic 46,XX Testicular Disorders/Differences of Sex Development - GeneReviews® - NCBI Bookshelf 
    https://www.ncbi.nlm.nih.gov/books/NBK1416
    ... chromosome aneuploidies 47,XXY (& variants: 48,XXXY; 49,XXXXY; 46XY/47,XXY mosaicism) Klinefelter syndrome (males w/hypogonadism, small testes, gynecomastia) Unlike 46, ...
  5. 49,XXXXY syndrome 
    https://medlineplus.gov/genetics/condition/49xxxxy-syndrome
    49,XXXXY syndrome is a chromosomal condition that causes intellectual disabilities, developmental delays, changes in sex characteristics and other physical ...
  6. X chromosome 
    https://medlineplus.gov/genetics/chromosome/x
    ... XXYY syndrome. More About This Health Condition 49,XXXXY syndrome is a chromosomal condition that causes intellectual disabilities, ... other physical features, and infertility. Individuals with 49,XXXXY syndrome have the usual single Y chromosome plus four ...
  7. Klinefelter syndrome 
    https://medlineplus.gov/genetics/condition/klinefelter-syndrome
    ... 48,XXXY syndrome, 48,XXYY syndrome, and 49,XXXXY syndrome. Like Klinefelter syndrome, these conditions affect male sexual ... Zeitler P. 48,XXYY, 48,XXXY and 49,XXXXY syndromes: not just variants of Klinefelter syndrome. Acta Paediatr. ...
  8. 48,XXXY syndrome 
    https://medlineplus.gov/genetics/condition/48xxxy-syndrome
    ... Zeitler P. 48,XXYY, 48,XXXY and 49,XXXXY syndromes: not just variants of Klinefelter syndrome. Acta Paediatr. ... chromosome aneuploidies: 48,XXYY, 48,XXXY, and 49,XXXXY. Am J Med Genet A. 2007 Jun 1;143A(11):1198-203. doi: 10.1002/ajmg.a.31746. Citation on PubMed
  9. 48,XXYY syndrome 
    https://medlineplus.gov/genetics/condition/48xxyy-syndrome
    ... Zeitler P. 48,XXYY, 48,XXXY and 49,XXXXY syndromes: not just variants of Klinefelter syndrome. Acta Paediatr. ...
  10. Y chromosome 
    https://medlineplus.gov/genetics/chromosome/y
    ... PubMed Central Visootsak J, Graham JM Jr. Klinefelter syndrome and ... aneuploidies: 48,XXYY, 48,XXXY, and 49,XXXXY. Am J Med Genet A. 2007 Jun 1; ...