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Matches in SemOpenAlex for { <https://semopenalex.org/work/W1990275904> ?p ?o ?g. }

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• W1990275904 abstract "Germline substitutions in the endothelial cell tyrosine kinase receptor TIE2 (encoded by TEK) cause a rare, inherited form of venous anomaly known as a mucocutaneous venous malformation (VMCM; refs. 1, 2, 3 and V.W., N.L., M.U., A. Irrthum, L.M.B. et al., unpublished data). We identified a somatic 'second hit' causing loss of function of TIE2 in a resected VMCM and assessed whether such localized, tissue-specific events have a role in the etiology of sporadic venous malformations, which are far more common. We identified eight somatic TEK mutations in lesions from 28 of 57 individuals (49.1%) with sporadic venous malformations; the mutations were absent from the individuals' blood and control tissues. The somatic mutations included one causing a frequent L914F substitution and several double mutations in cis, all of which resulted in ligand-independent TIE2 hyperphosphorylation in vitro. When overexpressed in human umbilical vein endothelial cells, the L914F mutant was abnormally localized and responded to ligand, in contrast to wild-type TIE2 and the common, inherited R849W mutant, suggesting that the mutations have distinct effects. The presence of the same mutations in multifocal sporadic venous malformations in two individuals suggests a common origin for the abnormal endothelial cells at the distant sites. These data show that a sporadic disease may be explained by somatic changes in a gene causing rare, inherited forms and pinpoint TIE2 pathways as potential therapeutic targets for venous malformations." @default.
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• W1990275904 date "2008-12-14" @default.
• W1990275904 modified "2023-10-14" @default.
• W1990275904 title "Somatic mutations in angiopoietin receptor gene TEK cause solitary and multiple sporadic venous malformations" @default.
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• W1990275904 doi "https://doi.org/10.1038/ng.272" @default.
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