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Marker chromosomes in fetal loss
C Kumar1, S M Kleyman, R V Samonte
1Division of Genetics, The Long Island College Hospital-SUNY Health Science Center at Brooklyn, NY 11201, USA.
Human Reproduction (Oxford, England)
|June 1, 1997
Summary
Marker chromosomes diagnosed prenatally have unclear clinical significance, leading to pregnancy terminations. This overview examines their implications for fetal loss.
Area of Science:
- Genetics
- Prenatal Diagnosis
- Cytogenetics
Background:
- Marker chromosomes are structurally abnormal chromosomes, often of unknown origin.
- Their prenatal diagnosis presents challenges in predicting clinical outcomes.
- Uncertainty surrounding marker chromosomes can lead to difficult reproductive decisions.
Purpose of the Study:
- To review the clinical significance of marker chromosomes detected during prenatal diagnosis.
- To summarize the implications of marker chromosomes for fetal loss.
- To provide an overview of current understanding regarding these genetic anomalies.
Main Methods:
- Literature review of studies on marker chromosomes and prenatal diagnosis.
- Analysis of reported cases and outcomes associated with marker chromosomes.
- Synthesis of information regarding fetal loss rates in affected pregnancies.
Main Results:
- The clinical significance of many marker chromosomes remains poorly understood.
- Prenatal diagnosis of marker chromosomes is associated with a risk of fetal loss.
- The origin and behavior of marker chromosomes are often difficult to determine.
Conclusions:
- Clarifying the clinical significance of marker chromosomes is crucial for genetic counseling.
- Further research is needed to better ascertain the origin and impact of marker chromosomes.
- Improved understanding can aid in managing pregnancies with prenatal diagnosis of marker chromosomes.