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Turner syndrome and haploinsufficiency
1University of Texas Southwestern Medical School, Dallas, Texas 75235-8591, USA. andrew@mcdermott.swmed.edu
Current Opinion in Genetics & Development
|August 5, 1998
Summary
Turner syndrome, a genetic disorder caused by a missing X chromosome (monosomy X), has long been linked to gene haploinsufficiency. Identifying the specific genes responsible for its varied symptoms remains a challenge, though recent research highlights several candidates.
Area of Science:
- Human Genetics
- Molecular Biology
- Developmental Biology
Background:
- Turner syndrome (monosomy X) is a well-known genetic disorder.
- It was one of the first conditions linked to gene haploinsufficiency.
- Identifying specific causative genes for its complex phenotype has been difficult.
Purpose of the Study:
- To review and discuss candidate genes implicated in Turner syndrome.
- To explore the genetic basis of monosomy X phenotypes.
- To highlight recent advancements in identifying genes responsible for Turner syndrome.
Main Methods:
- Literature review of recent genetic and clinical data.
- Analysis of candidate gene studies related to monosomy X.
- Synthesis of findings on gene haploinsufficiency in Turner syndrome.
Main Results:
- Several candidate genes have been proposed for specific Turner syndrome phenotypes.
- Both novel and previously implicated genes are under consideration.
- Evidence suggests a multi-genic contribution to the disorder's characteristics.
Conclusions:
- The genetic underpinnings of Turner syndrome are complex.
- Further research is needed to definitively identify genes causing monosomy X phenotypes.
- Progress is being made in understanding the molecular basis of Turner syndrome.