| Autor: |
Wei Shern Lee, Sara Baldassari, Mathilde Chipaux, Homa Adle‐Biassette, Sarah E. M. Stephenson, Wirginia Maixner, A. Simon Harvey, Paul J. Lockhart, Stéphanie Baulac, Richard J. Leventer |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Annals of Clinical and Translational Neurology, Vol 8, Iss 2, Pp 485-490 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2328-9503 |
| DOI: |
10.1002/acn3.51286 |
| Popis: |
Abstract Focal cortical dysplasia (FCD) and hemimegalencephaly (HME) are related malformations with shared etiologies. We report three patients with a spectrum of cortical malformations associated with pathogenic brain‐specific somatic Ras homolog enriched in brain (RHEB) variants. The somatic variant load directly correlated with the size of the malformation, with upregulated mTOR activity confirmed in dysplastic tissues. Laser capture microdissection showed enrichment of RHEB variants in dysmorphic neurons and balloon cells. Our findings support the role of RHEB in a spectrum of cortical malformations confirming that FCD and HME represent a disease continuum, with the extent of dysplastic brain directly correlated with the somatic variant load. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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