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Genetic and Rare Diseases Information Center (GARD)

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46, XY disorders of sexual development


Other Names for this Disease
  • 46, XY DSD
  • 46, XY female
  • XY female
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Overview



What are 46, XY disorders of sex development?

What are common causes of 46, XY disorders of sex development?

What kind of testing is necessary to determine the underlying cause of 46, XY disorders of sex development?


What are 46, XY disorders of sex development?

A 46, XY disorder of sex development (DSD) is a condition in which an individual with one X chromosome and one Y chromosome in each cell, the pattern normally found in males, have genitalia that is not clearly male or female. Infants with this condition tend to have penoscrotal hypospadias, abnormal development of the testes, and reduced to no sperm production. Some individuals with 46, XY DSD have fully to underdeveloped female reproductive organs (e.g., uterus and fallopian tubes), while others do not.[1] People with with 46, XY DSD may be raised as males or females. Treatment involves surgery and hormone replacement therapy.[1] People with 46, XY DSD are at an increased risk for gonadal tumors and benefit from regular surveillance or surgery to remove abnormally developed gonads.[1]
Last updated: 12/7/2012

What are common causes of 46, XY disorders of sex development?

Typical sex development requires multiple genes, hormones, and hormone receptors to work in concert. 46, XY disorders of sex development (DSD) are caused by either disorders of testicular development or disorders involving the male hormone, androgen. Conditions which fall within the spectrum of 46, XY DSD, include:[2]
Last updated: 12/7/2012

What kind of testing is necessary to determine the underlying cause of 46, XY disorders of sex development?

People with 46, XY disorders of sex development (DSD) benefit from having a multidisciplinary team of healthcare providers. Initial work-up involves taking a family history, pregnancy history, and a physical exam. This information, combined with chromosome test results, guides additional testing. Additional tests may include hormone measurements (e.g., LH, FSH, inhibin B, T, DHT, AMH, A, and DHEAS), imaging (e.g., ultrasound), biopsy, and genetic testing.[2]
Last updated: 12/7/2012

References
  1. Ostrer H. 46,XY Disorder of Sex Development and 46,XY Complete Gonadal Dysgenesis. In: Pagon RA, Bird TD, Dolan CR, Stephens K, Adam MP, editors. GeneReviews™ [Internet]. Seattle (WA): University of Washington, Seattle: 1993-2008 May 21 [updated 2009 Sep 15]. ;
  2. Gönül Öçal . Current Concepts in Disorders of Sexual Development. Clin Res Pediatr Endocrinol. 2011 September; 3(3):105–114; http://www.ncbi.nlm.nih.gov/pubmed?term=PMC3184510. Accessed 10/22/2012.