What Is Saethre-Chotzen Syndrome?
Saethre-Chotzen syndrome is a genetic condition that involves craniosynostosis and facial features. Here is what to know.
Saethre-Chotzen syndrome is a genetic condition caused by mutations in the TWIST1 gene. It is characterized by early fusion of skull sutures (craniosynostosis) and distinctive facial features.
- Key features:
- Craniosynostosis (usually coronal sutures)
- Low-set hairline
- Drooping eyelids (ptosis)
- Widely spaced eyes (hypertelorism)
- Small ears with prominent ear crus
- Facial asymmetry
- Short stature
- Mild syndactyly (fused fingers, usually 2nd and 3rd)
- Normal intelligence (most cases)
- Treatment:
- Skull surgery in infancy (cranial vault remodeling)
- Eyelid surgery (ptosis correction)
- Orthognathic surgery (if needed)
- Orthodontics
- Hand surgery (if syndactyly affects function)
- Inheritance:
- Autosomal dominant
- Each child of an affected parent has a 50% chance
- Expressivity varies widely (even within families)
Clinical Guidance
Saethre-Chotzen syndrome causes craniosynostosis with distinctive facial features, ptosis, and syndactyly. Treatment involves skull surgery in infancy and management of specific features. Intelligence is typically normal.