Related Experiment Videos
[Human familial autosomal reciprocal translocations]
1Equipe de Génétique Constitutionnelle, TIMC, Faculté de Médecine de Grenoble, La Tronche, France.
Annales De Genetique
|January 1, 1995
Summary
Reciprocal translocations, a common chromosome abnormality, can cause reproductive issues and birth defects. A new computer system, Reci-Conseil, aids genetic counseling by predicting risks associated with these translocations.
Area of Science:
- Cytogenetics
- Human Genetics
- Medical Genetics
Context:
- Reciprocal translocations are frequent structural chromosome abnormalities involving segment exchange between non-homologous chromosomes.
- These translocations, though often silent, can lead to reproductive failure or offspring with malformation syndromes.
- Current genetic counseling and prenatal diagnosis strategies do not adequately address the variable risks of individual translocations.
Purpose:
- To present prediction methods for the probable mode of unbalanced inheritance at birth and at term.
- To introduce Reci-Conseil, a computer system designed to assist genetic counseling for reciprocal translocations.
- To leverage a database of approximately 2000 families for genomic mapping of partial trisomies and monosomies.
Summary:
- Reciprocal translocations involve the exchange of segments between non-homologous chromosomes, leading to varied risks of reproductive issues and developmental abnormalities.
- Prediction methods for unbalanced inheritance and a novel computer-aided genetic counseling system (Reci-Conseil) are detailed.
- The system utilizes a database of 2000 families, offering potential for genomic mapping of chromosomal imbalances.
Impact:
- Enhances genetic counseling by providing tailored risk assessments for reciprocal translocations.
- Facilitates more accurate prenatal diagnosis strategies based on individual translocation risks.
- Contributes to a better understanding of genomic imbalances and their mapping through a large family database.