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The complex genetics of cleft lip and palate
1Division of Orthodontics and Craniofacial Development, GKT Dental Institute, London, UK.
European Journal of Orthodontics
|March 5, 2004
Summary
Genetic and environmental factors contribute to cleft lip and palate (CLP). Recent advances identify gene mutations in syndromes, but non-syndromic CLP genetics and gene-environment interactions require further research.
Area of Science:
- Craniofacial genetics
- Developmental biology
Background:
- Cleft lip and palate (CLP) are common congenital anomalies with multifactorial etiology.
- Both genetic and environmental factors are implicated in CLP development.
- Significant progress has been made in identifying genetic causes for clefting syndromes.
Purpose of the Study:
- To review recent advances in the genetics of cleft lip and palate.
- To highlight current understanding of inheritance patterns and genetic loci involved in CLP.
- To inform orthodontists about the etiology of these complex conditions.
Main Methods:
- Review of recent genetic research on cleft lip and palate.
- Identification of gene mutations associated with clefting syndromes (e.g., IRF6, PVRL1).
- Summary of linkage and association studies for candidate genes in non-syndromic clefting.
Main Results:
- Mutations in IRF6 cause van der Woude syndrome.
- PVRL1 gene mutations are linked to autosomal recessive ectodermal dysplasia with clefting.
- Candidate genes for non-syndromic clefting have been identified, but specific mutations remain elusive.
Conclusions:
- Genetics plays a significant role in cleft lip and palate, particularly in syndromic forms.
- Environmental factors and gene-environment interactions are crucial and warrant further investigation.
- Understanding CLP genetics is vital for orthodontists managing affected individuals.