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Zhao, Shujuan; Mekbib, Kedous Y.; van der Ent, Martijn A.; Allington, Garrett; Prendergast, Andrew; Chau, Jocelyn E.; Smith, Hannah; Shohfi, John; Ocken, Jack; Duran, Daniel; Furey, Charuta G.; Hao, Le Thi; Duy, Phan Q.; Reeves, Benjamin C.; Zhang, Junhui; Nelson-Williams, Carol; Chen, Di; Li, Boyang; Nottoli, Timothy; Bai, Suxia; Rolle, Myron; Zeng, Xue; Dong, Weilai; Fu, Po-Ying; [...]

Mutation of key signaling regulators of cerebrovascular development in vein of Galen malformations

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  • Media type: E-Article
  • Title: Mutation of key signaling regulators of cerebrovascular development in vein of Galen malformations
  • Contributor: Zhao, Shujuan; Mekbib, Kedous Y.; van der Ent, Martijn A.; Allington, Garrett; Prendergast, Andrew; Chau, Jocelyn E.; Smith, Hannah; Shohfi, John; Ocken, Jack; Duran, Daniel; Furey, Charuta G.; Hao, Le Thi; Duy, Phan Q.; Reeves, Benjamin C.; Zhang, Junhui; Nelson-Williams, Carol; Chen, Di; Li, Boyang; Nottoli, Timothy; Bai, Suxia; Rolle, Myron; Zeng, Xue; Dong, Weilai; Fu, Po-Ying; [...]
  • Published: Springer Science and Business Media LLC, 2023
  • Published in: Nature Communications, 14 (2023) 1
  • Language: English
  • DOI: 10.1038/s41467-023-43062-z
  • ISSN: 2041-1723
  • Origination:
  • Footnote:
  • Description: AbstractTo elucidate the pathogenesis of vein of Galen malformations (VOGMs), the most common and most severe of congenital brain arteriovenous malformations, we performed an integrated analysis of 310 VOGM proband-family exomes and 336,326 human cerebrovasculature single-cell transcriptomes. We found the Ras suppressor p120 RasGAP (RASA1) harbored a genome-wide significant burden of loss-of-function de novo variants (2042.5-fold, p = 4.79 x 10−7). Rare, damaging transmitted variants were enriched in Ephrin receptor-B4 (EPHB4) (17.5-fold, p = 1.22 x 10−5), which cooperates with p120 RasGAP to regulate vascular development. Additional probands had damaging variants in ACVRL1, NOTCH1, ITGB1, and PTPN11. ACVRL1 variants were also identified in a multi-generational VOGM pedigree. Integrative genomic analysis defined developing endothelial cells as a likely spatio-temporal locus of VOGM pathophysiology. Mice expressing a VOGM-specific EPHB4 kinase-domain missense variant (Phe867Leu) exhibited disrupted developmental angiogenesis and impaired hierarchical development of arterial-capillary-venous networks, but only in the presence of a “second-hit” allele. These results illuminate human arterio-venous development and VOGM pathobiology and have implications for patients and their families.
  • Access State: Open Access