Trisomy 18

Overview

What is Trisomy 18?

Trisomy 18 is a genetic condition that causes severe health problems and is caused by an extra number 18 chromosome. People with trisomy 18 can be affected differently, but most with complete trisomy 18 will have serious symptoms. Heart defects, brain problems and intellectual disabilities are extremely common, and the majority of affected individuals have complications in other organs as well. Most babies with trisomy 18 do not survive very long after birth or are stillborn. However, a very small number can live for some time.

SOURCE: Emory University - Department of Human Genetics in collaboration with ThinkGenetic • https://www.thinkgenetic.com/diseases/trisomy-18/overview/9657 • DATE UPDATED: 2016-06-28

References

http://ghr.nlm.nih.gov/condition/trisomy-18

http://rarediseases.org/rare-diseases/trisomy-18-syndrome/

Obstet Gynecol Surv. 2016 May;71(5):295-300. doi: 10.1097/OGX.0000000000000304.Management Considerations for Ongoing Pregnancies Complicated by Trisomy 13 and 18.Dotters-Katz SK1, Kuller JA2, Grace MR1, Laifer SA3, Strauss RA

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