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Cerebrovascular complications in Ehlers-Danlos syndrome type IV
K N North1, D A Whiteman, M G Pepin
1Department of Medicine, Children's Hospital, Boston, MA, USA.
Insights
Ehlers-Danlos syndrome (EDS) type IV, a genetic disorder affecting collagen, can cause serious cerebrovascular events like aneurysms and dissections in young adults. Early clinical identification is crucial for managing these risks and guiding treatment strategies.
Area of Science:
- Genetics
- Neurology
- Vascular Medicine
Background:
- Ehlers-Danlos syndrome (EDS) type IV is an autosomal dominant genetic disorder caused by mutations in the COL3A1 gene, affecting type III procollagen synthesis.
- This condition predisposes individuals to arterial, bowel, and uterine rupture.
Observation:
- A review of 202 individuals with confirmed EDS type IV identified 19 cases of cerebrovascular complications.
- These complications, including aneurysms, hemorrhage, fistulas, and arterial dissection, occurred at a mean age of 28.3 years.
Findings:
- Cerebrovascular complications are a significant concern in Ehlers-Danlos syndrome type IV, presenting even in young adulthood.
- The study highlights the frequency and types of central nervous system events associated with this specific EDS type.
Implications:
- Clinical recognition of EDS type IV is vital for prompt diagnosis and management of potentially life-threatening vascular events.
- Noninvasive imaging like Doppler and MRI angiography are recommended over conventional angiography due to complication risks.
- Caution is advised with anticoagulation therapy due to increased bleeding risks in affected individuals.
Abstract:
Ehlers-Danlos syndrome (EDS) type IV is an autosomal dominant disorder that results from mutations in the COL3A1 gene, which encodes chains of type III procollagen. Individuals with this disorder are predisposed to rupture of arteries, the bowel, and the gravid uterus. To assess the frequency of central nervous system complications, we reviewed clinical data concerning 202 individuals with EDS type IV from 121 families in which the diagnosis was confirmed by biochemical or molecular studies. We identified 19 individuals with cerebrovascular complications, which included intracranial aneurysms with secondary hemorrhage, spontaneous carotid-cavernous sinus fistula, and cercical artery dissection. The mean age at presentation with these events was 28.3 years (range, 17-48 years). Although uncommon, EDS type IV is an important potential cause of stroke in young people. The disorder is readily identifiable clinically and the diagnosis has important implications for acute and long-term management and, potentially, for other family members. Because conventional angiography may exacerbate severe complications, noninvasive procedures such as Doppler and magnetic resonance angiography are the investigations of choice. Anticoagulation therapy may result in increased bruising or bleeding and should be used with caution.