Stephen J. Schueler, M.D.

Overview Incidence Symptoms Evaluation Treatment Outlook Underlying Cause Genetics

Klinefelter's Syndrome Underlying Cause

Klinefelter's syndrome is caused by the presence of an extra X sex chromosome. The extra X chromosome may come from the father's sperm or the mother's egg.

Continue to Klinefelter's Syndrome Genetics

Last Updated: Jun 18, 2008 References
Authors: Stephen J. Schueler, MD; John H. Beckett, MD; D. Scott Gettings, MD
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PubMed Klinefelter's Syndrome References
  1. Lanfranco F, Kamischke A, Zitzmann M, Nieschlag E. Klinefelter's syndrome. Lancet. 2004 Jul 17-23;364(9430):273-83. [15262106]
  2. Temple CM, Sanfilippo PM. Executive skills in Klinefelter's syndrome. Neuropsychologia. 2003;41(11):1547-59. [12849773]
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