BACKGROUND AND PURPOSE: Accurate estimates of intracranial hemorrhage (ICH) risk in patients harboring brain arteriovenous malformation (BAVM) are needed to evaluate interventional strategies and to help guide clinical management. Identification of genetic polymorphisms associated with ICH would facilitate risk stratification in BAVM patients. METHODS: We identified patients with BAVM and documented clinical presentation, demographic data, venous drainage pattern, and BAVM size. Patients were genotyped for 5 polymorphisms in 3 inflammatory cytokine genes, and 9 polymorphisms in 5 angiogenesis-related genes. Association of genotype with risk of hemorrhagic BAVM presentation was evaluated using logistic regression analysis. RESULTS: We genotyped 180 patients with BAVM (53% female, 57% white, mean age at diagnosis 35+/-17 years, 41% presenting with ICH). BAVM patients homozygous for the interleukin 6 (IL6)-174G allele had a greater risk of ICH presentation (OR, 2.62, P=0.003) than IL6-174C carriers. In a multivariate logistic regression model, IL6-174G>C genotype, small BAVM size, and exclusively deep venous drainage were independent predictors of ICH presentation. A similar univariate trend was noted for the TNFalpha-308 GG genotype (P=0.055). The other polymorphisms genotyped were not associated with ICH. CONCLUSIONS: A polymorphism in the inflammatory cytokine IL6, but not polymorphisms in angiogenesis-related genes, was associated with ICH presentation of BAVM. Further studies are needed to define the role of inflammatory cytokines in the pathogenesis of BAVM hemorrhage.
BACKGROUND AND PURPOSE: Accurate estimates of intracranial hemorrhage (ICH) risk in patients harboring brain arteriovenous malformation (BAVM) are needed to evaluate interventional strategies and to help guide clinical management. Identification of genetic polymorphisms associated with ICH would facilitate risk stratification in BAVM patients. METHODS: We identified patients with BAVM and documented clinical presentation, demographic data, venous drainage pattern, and BAVM size. Patients were genotyped for 5 polymorphisms in 3 inflammatory cytokine genes, and 9 polymorphisms in 5 angiogenesis-related genes. Association of genotype with risk of hemorrhagic BAVM presentation was evaluated using logistic regression analysis. RESULTS: We genotyped 180 patients with BAVM (53% female, 57% white, mean age at diagnosis 35+/-17 years, 41% presenting with ICH). BAVM patients homozygous for the interleukin 6 (IL6)-174G allele had a greater risk of ICH presentation (OR, 2.62, P=0.003) than IL6-174C carriers. In a multivariate logistic regression model, IL6-174G>C genotype, small BAVM size, and exclusively deep venous drainage were independent predictors of ICH presentation. A similar univariate trend was noted for the TNFalpha-308 GG genotype (P=0.055). The other polymorphisms genotyped were not associated with ICH. CONCLUSIONS: A polymorphism in the inflammatory cytokine IL6, but not polymorphisms in angiogenesis-related genes, was associated with ICH presentation of BAVM. Further studies are needed to define the role of inflammatory cytokines in the pathogenesis of BAVM hemorrhage.
Authors: Ludmila Pawlikowska; K Y Trudy Poon; Achal S Achrol; Charles E McCulloch; Connie Ha; Kristen Lum; Jonathan G Zaroff; Nerissa U Ko; S Claiborne Johnston; Stephen Sidney; Douglas A Marchuk; Michael T Lawton; Pui-Yan Kwok; William L Young Journal: Neurosurgery Date: 2006-05 Impact factor: 4.654
Authors: J van Beijnum; H B van der Worp; H M Schippers; O van Nieuwenhuizen; L J Kappelle; G J E Rinkel; J W Berkelbach van der Sprenkel; C J M Klijn Journal: J Neurol Neurosurg Psychiatry Date: 2007-01-26 Impact factor: 10.154
Authors: Achal S Achrol; Helen Kim; Ludmila Pawlikowska; K Y Trudy Poon; Charles E McCulloch; Nerissa U Ko; S Claiborne Johnston; Michael W McDermott; Jonathan G Zaroff; Michael T Lawton; Pui-Yan Kwok; William L Young Journal: Neurosurgery Date: 2007-10 Impact factor: 4.654
Authors: Hua Su; Helen Kim; Ludmila Pawlikowska; Hideya Kitamura; Fanxia Shen; Stephanie Cambier; Jennifer Markovics; Michael T Lawton; Stephen Sidney; Andrew W Bollen; Pui-Yan Kwok; Louis Reichardt; William L Young; Guo-Yuan Yang; Stephen L Nishimura Journal: Am J Pathol Date: 2009-12-17 Impact factor: 4.307