https://wikimd.org/index.php?action=history&feed=atom&title=Chromosome_9q_duplication 2026-04-27T15:07:35Z Revision history for this page on the wiki MediaWiki 1.44.2 https://wikimd.org/index.php?title=Chromosome_9q_duplication&diff=2380763&oldid=prev 2021-06-05T12:06:31Z

<p></p> <p><b>New page</b></p><div>== &#039;&#039;&#039;Alternate names&#039;&#039;&#039; ==<br /> Duplication 9q; Trisomy 9q; 9q duplication; 9q trisomy; Partial trisomy 9q <br /> <br /> == &#039;&#039;&#039;Definition&#039;&#039;&#039; ==<br /> Chromosome 9q duplication is a chromosome abnormality that occurs when there is an extra copy of genetic material on the long arm (q) of chromosome 9.<br /> [[File:Human chromosome 9 ideogram.svg|thumb]]<br /> <br /> == &#039;&#039;&#039;Cause&#039;&#039;&#039; ==<br /> This condition occurs when there is an &#039;&#039;&#039;extra copy of genetic material on the long arm (q) of chromosome 9&#039;&#039;&#039;.<br /> <br /> == &#039;&#039;&#039;Inheritance&#039;&#039;&#039; ==<br /> Chromosome testing of both parents can provide more information on whether or not the duplication was inherited.<br /> In most cases, &#039;&#039;&#039;parents do not have any chromosomal anomaly&#039;&#039;&#039;. <br /> However, sometimes one parent is found to have a [[balanced translocation]], where a piece of a chromosome has broken off and attached to another one with no gain or loss of genetic material. <br /> * The balanced translocation normally does not cause any signs or symptoms, but it increases the risk for having an affected child with a chromosomal anomaly like a [[duplication]].<br /> <br /> == &#039;&#039;&#039;Signs and symptoms&#039;&#039;&#039; ==<br /> * The severity of the condition and the signs and symptoms depend on the size and location of the duplication and which genes are involved. <br /> * Features that often occur in people with chromosome 9q duplication include [[developmental delay]], [[intellectual disability]], behavioral problems and distinctive facial features.<br /> <br /> == &#039;&#039;&#039;Diagnosis&#039;&#039;&#039; ==<br /> Chromosome disorders may be suspected in people who have developmental delays, intellectual disabilities and/or physical abnormalities. <br /> <br /> Several types of genetic tests can identify chromosome disorders: <br /> * [[Karyotyping]]<br /> * [[Microarray]] (also called array CGH)<br /> * [[Fluorescence in situ hybridization (FISH)]]<br /> <br /> == &#039;&#039;&#039;Treatment&#039;&#039;&#039; ==<br /> Treatment is based on the signs and symptoms present in each person.<br /> <br /> {{rarediseases}}<br /> {{stb}}</div>

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