Cerebral Vascular Malformations Diagnostic and Therapeutic Approaches

Cerebral vascular malformations encompass a spectrum of congenital and sporadic lesions—such as cavernous malformations, arteriovenous malformations and capillary telangiectasias—that predispose patients to haemorrhage, seizures and focal neurological deficits. Diagnosis relies on multimodal imaging, including magnetic resonance imaging (MRI) with susceptibility-weighted sequences, computed tomography and digital subtraction angiography, supplemented by genetic screening in familial cases. Recent advances in molecular diagnostics employ single-cell and single-nucleus sequencing to delineate pathogenic mutations and cellular heterogeneity within lesions. Therapeutic management ranges from conservative observation to microsurgical resection, stereotactic radiosurgery and endovascular embolisation. Pharmacological strategies targeting aberrant angiogenesis, inflammation and endothelial-to-mesenchymal transition are under investigation, with agents such as mTOR inhibitors and anti-angiogenic peptides moving towards early clinical evaluation. Integration of high-resolution imaging with molecular profiling promises personalised risk stratification and the development of targeted treatments to mitigate lesion growth and reduce haemorrhagic risk.

Research from Nature Portfolio

Recent studies have deployed single-nucleus DNA sequencing to uncover hidden somatic loss-of-heterozygosity in cavernous malformations, revealing multiple low-frequency pathogenic variants that evade bulk sequencing. This approach has elucidated an alternative genetic mechanism for lesion initiation, improving the sensitivity of diagnostic assays. Another investigation has shown that clonal expansion of mutant endothelial cells drives lesion formation, akin to benign tumourigenesis. These findings establish a cellular and genetic framework for targeted molecular therapies, emphasising early detection of mutant cell populations and disruption of clonal outgrowth.

Cerebral Vascular Malformations Diagnostic and Therapeutic Approaches publication trend

The graph below shows the total number of articles in cerebral vascular malformations diagnostic and therapeutic approaches across all publications each year (not limited to Nature Index journals).

Technical terms

Cerebral cavernous malformations (CCMs): Vascular lesions composed of dilated capillary cavities that may bleed and cause neurological symptoms.

Single-nucleus DNA sequencing: A method to analyse genomic variants in individual nuclei, enhancing detection of low-frequency mutations.

Loss-of-heterozygosity: The deletion or inactivation of one allele at a gene locus, often revealing pathogenic mutations.

Endothelial-to-mesenchymal transition (EndMT): A process by which endothelial cells acquire mesenchymal characteristics, contributing to lesion growth.

Stereotactic radiosurgery: A non-invasive technique delivering focused radiation to vascular malformations to induce vessel obliteration.

Cuproptosis: A form of regulated cell death driven by copper-dependent mitochondrial dysfunction, linked to vascular pathology.

References

1. Medical management and surgery versus medical management alone for symptomatic cerebral cavernous malformation (CARE): a feasibility study and randomised, open, pragmatic, pilot phase trial. The Lancet Neurology (2024).
2. Single-nucleus DNA sequencing reveals hidden somatic loss-of-heterozygosity in Cerebral Cavernous Malformations. Nature Communications (2023).
3. Single-cell sequencing reveals that endothelial cells, EndMT cells and mural cells contribute to the pathogenesis of cavernous malformations. Experimental & Molecular Medicine (2023).
4. Single-cell and bulk RNA-seq unveils the immune infiltration landscape associated with cuproptosis in cerebral cavernous malformations. Biomarker Research (2024).
5. Endothelial cell clonal expansion in the development of cerebral cavernous malformations. Nature Communications (2019).