2008-12-14T22:20:18+00:00 <p>48,<span class="caps">XXYY</span> syndrome is a rare genetic condition caused by a chromosome aneuploidy.</p> <p>48 <span class="caps">XXYY</span> syndrome is diagnosed either by prenatal testing during pregnancy or by a blood test which examines the chromosomes (karyotype) of the patient.</p> <p>48,<span class="caps">XXYY</span> syndrome is a rare genetic condition caused by a chromosome aneuploidy.</p> 1272 48,XXYY Syndrome 2 48-xxyy-syndrome 0 2.5 http://www3.interscience.wiley.com/journal/119140435/abstract Per 100,000 Population 48 XXYY Syndrome, Klinefelter's Syndrome, 0 1 2009-04-15T17:09:32+00:00