Related Experiment Videos
Holoprosencephaly: a developmental field defect
1Department of OB/GYN, School of Medicine, University of South Dakota, Vermillion.
Insights
Holoprosencephaly is a spectrum of brain and facial malformations. Mild forms in relatives highlight the importance of careful examination for genetic and environmental factors.
Area of Science:
- Developmental biology
- Clinical genetics
- Teratology
Background:
- Holoprosencephaly (HPE) encompasses a range of congenital craniofacial malformations.
- These malformations include severe presentations like cyclopia and milder forms.
Observation:
- Etiologic heterogeneity is a known characteristic of holoprosencephaly.
- Factors implicated include chromosomal abnormalities, genetic mutations, and teratogenic exposures.
Findings:
- Holoprosencephaly is understood as a developmental field defect.
- This perspective emphasizes the need to identify milder phenotypic expressions.
Implications:
- Mild forms such as single median incisor, hypotelorism, bifid uvula, or pituitary deficiency may occur in relatives.
- Close scrutiny of family members is crucial for comprehensive diagnosis and genetic counseling.
Abstract:
Holoprosencephaly refers to a spectrum of craniofacial malformations including cyclopia, ethmocephaly, cebocephaly, and premaxillary agenesis. Etiologic heterogeneity is well documented. Chromosomal, genetic, and teratogenic factors have been implicated. Recognition of holoprosencephaly as a developmental field defect stresses the importance of close scrutiny of relatives for mild forms such as single median incisor, hypotelorism, bifid uvula, or pituitary deficiency.