Related Experiment Videos
Congenital diaphragmatic hernia: is 15q26.1-26.2 a candidate locus?
Joseph R Biggio1, Maria D Descartes, Andrew J Carroll
1Department of Human Genetics, University of Alabama at Birmingham, 619 19th Street South, OHB 450, Birmingham, AL 35249-7333, USA. jbiggio@uab.edu
American Journal of Medical Genetics. Part A
|April 2, 2004
Summary
A rare chromosomal deletion on chromosome 15q26.1 is linked to congenital diaphragmatic hernia (CDH). This finding implicates the MEF2A gene in diaphragm development.
Area of Science:
- Genetics
- Developmental Biology
- Medical Science
Background:
- Congenital diaphragmatic hernia (CDH) is a birth defect resulting from incomplete diaphragm formation.
- While often idiopathic, chromosomal abnormalities contribute to about 15% of CDH cases.
- The 15q24-26 region has been identified as potentially critical for diaphragm development.
Observation:
- A patient with a karyotype of 46, XX, del (15)(q26.1) presented with CDH, coarctation of the aorta, and dysmorphic features.
- This case represents the smallest isolated chromosomal aberration reported on distal 15q.
- Myocyte-enhancer factor 2 (MEF2) proteins are crucial for muscle differentiation and development.
Findings:
- The MEF2A gene, a member of the MEF2 family, is located on chromosome 15q26.
- The identified deletion encompasses the 15q26.1 region, suggesting a link to CDH.
- This specific deletion is the smallest reported isolated aberration in this critical region.
Implications:
- The 15q26 region, particularly the MEF2A gene, is proposed as a candidate locus for CDH.
- Further research is warranted to investigate the role of MEF2A in diaphragm formation and CDH etiology.
- Understanding this genetic link may improve diagnostic approaches and future therapeutic strategies for CDH.