ObjectiveDescribe the course and outcomes in a UK national cohort of neonates with vein of Galen malformation identified before 28 days of life.MethodsNeonates with angiographically confirmed vein of Galen malformation presenting to 1 of 2 UK treatment centers (2006–2016) were included; those surviving were invited to participate in neurocognitive assessment. Results in each domain were dichotomized into “good” and “poor” categories. Cross‐sectional and angiographic brain imaging studies were systematically interrogated. Logistic regression was used to explore potential outcome predictors.ResultsOf 85 children with neonatal vein of Galen malformation, 51 had survived. Thirty‐four participated in neurocognitive assessment. Outcomes were approximately evenly split between “good” and “poor” categories across all domains, namely, neurological status, general cognition, neuromotor skills, adaptive behavior, and emotional and behavioral development. Important predictors of poor cognitive outcome were initial Bicêtre score ≤ 12 and presence of brain injury, specifically white matter injury, on initial imaging; in multivariate analysis, only Bicêtre score ≤ 12 remained significant.InterpretationDespite modern supportive and endovascular treatment, more than one‐third of unselected newborns with vein of Galen malformation did not survive. Outcome was good in around half of survivors. The importance of white matter injury suggests that abnormalities of venous as well as arterial circulation are important in the pathophysiology of brain injury. Ann Neurol 2018;84:547–555

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Our study demonstrates for the first time that the RP may reduce the admission rate of infants with LOC. Caregivers often perform inadequate manoeuvres when a child becomes unconscious. Campaigns aiming at increasing knowledge of the RP should be promoted.

Clinical and radiological features in older children with vein of Galen malformation relate to venous hypertension. Outcome is good in most cases with endovascular therapy. Mortality is low but is related to intracranial haemorrhage.

Persistent childhood asthma was associated with increased risk of migraine and higher frequency of migraine attacks. History of anti-asthmatic or anti-allergic therapies was associated with decreased risk of migraine in children and adolescents. The role of these therapies on the pathogenesis and occurrence of migraine needs to be further elucidated because of the huge potential impact in terms of public health.