Germline substitutions in the endothelial cell tyrosine kinase receptor TIE2/TEK cause a rare inherited form of venous anomalies, mucocutaneous venous malformations (VMCM). We now identified a somatic 2nd hit causing los
[Paragraph-level] PMCID: PMC2670982 Section: ABSTRACT PassageIndex: 1
Evidence Type(s): Predisposing, Oncogenic, Functional
Justification: Predisposing: The passage describes germline substitutions in the TIE2/TEK receptor that cause a rare inherited form of venous anomalies, indicating that these variants confer inherited risk for developing the disease. Oncogenic: The passage discusses somatic mutations in TIE2 that contribute to tumor development, specifically noting the identification of somatic mutations in lesions and their role in the etiology of sporadic venous malformations. Functional: The passage mentions that the L914F variant shows ligand-independent hyperphosphorylation and abnormal localization when overexpressed, indicating that it alters molecular function.
Gene→Variant (gene-first): 284:L914F 7010:R849W
Genes: 284 7010
Variants: L914F R849W