Related Experiment Videos
Mixed clefting type in Rapp-Hodgkin syndrome
Derek E Neilson1, Jeanne W Brunger, Shauna Heeger
1The Center for Human Genetics, Department of Genetics, Case Western Reserve University School of Medicine, University Hospital of Cleveland, Cleveland, Ohio, USA.
American Journal of Medical Genetics
|March 29, 2002
Summary
Mixed clefting type (MCT), a rare condition, was observed in a family with Rapp-Hodgkin syndrome (RHS). This finding suggests potential genetic links between RHS and other clefting syndromes, even those with different phenotypes.
Area of Science:
- Genetics
- Developmental Biology
- Medical Genetics
Background:
- Mixed clefting type (MCT) involves both cleft lip and isolated cleft palate within the same family.
- Rapp-Hodgkin syndrome (RHS) is a rare condition with ectodermal abnormalities and clefting.
- Ectodermal dysplasia-clefting syndromes (EDCS), including EEC and AEC, share MCT.
Observation:
- This study identified MCT in a family diagnosed with Rapp-Hodgkin syndrome (RHS).
- Phenotypic overlap exists between RHS and EDCS (EEC, AEC), all exhibiting MCT.
- MCT is also present in van der Woude syndrome (VDW) and popliteal-pterygium syndrome (PPS).
Findings:
- The presence of MCT in RHS suggests a potential shared developmental or genetic basis with other clefting disorders.
- Despite limited clinical overlap, MCT serves as a unifying feature between RHS, EDCS, VDW, and PPS.
- This indicates that seemingly dissimilar syndromes may share underlying genetic pathways.
Implications:
- Rethinking the classification and genetic relationships of ectodermal dysplasia and clefting syndromes.
- Potential for novel therapeutic targets by understanding shared genetic mechanisms in MCT.
- Highlights the importance of detailed family history and phenotypic analysis in rare genetic disorders.