High Prevalence of Collagenopathies in Preterm- and Term-Born Children With Periventricular Venous Hemorrhagic Infarction

Overview

Journal J Child Neurol

Specialties Neurology
Pediatrics

Date 2023 Jul 10

PMID 37427422

Authors

Norman Ilves

Sander Pajusalu

Tiina Kahre

Rael Laugesaar

Ustina Samarina

Dagmar Loorits

Pille Kool

Pilvi Ilves

Affiliations

Soon will be listed here.

Abstract

Introduction: The aim of this study was to evaluate genetic risk factors in term-born children with antenatal periventricular hemorrhagic infarction (PVHI), presumed antenatal periventricular venous infarction and periventricular hemorrhagic infarction in preterm neonates.

Methods: Genetic analysis and magnetic resonance imaging were performed in 85 children: term-born children (≥36 gestational weeks) with antenatal periventricular hemorrhagic infarction (n = 6) or presumed antenatal (n = 40) periventricular venous infarction and preterm children (<36 gestational weeks) with periventricular hemorrhagic infarction (n = 39). Genetic testing was performed using exome or large gene panel (n = 6700 genes) sequencing.

Results: Pathogenic variants associated with stroke were found in 11 of 85 (12.9%) children with periventricular hemorrhagic infarction/periventricular venous infarction. Among the pathogenic variants, and variants were found in 7 of 11 (63%) children. Additionally, 2 children had pathogenic variants associated with coagulopathy, whereas 2 other children had other variants associated with stroke. Children with collagenopathies had significantly more often bilateral multifocal stroke with severe white matter loss and diffuse hyperintensities in the white matter, moderate to severe hydrocephalus, moderate to severe decrease in size of the ipsilesional basal ganglia and thalamus compared to children with periventricular hemorrhagic infarction/periventricular venous infarction without genetic changes in the studied genes ( ≤ .01). Severe motor deficit and epilepsy developed more often in children with collagenopathies compared to children without genetic variants ( = .0013, odds ratio [OR] = 233, 95% confidence interval [CI]: 2.8-531; and = .025, OR = 7.3, 95% CI: 1.3-41, respectively).

Conclusions: Children with periventricular hemorrhagic infarction/periventricular venous infarction have high prevalence of pathogenic variants in collagene genes ( and . Genetic testing should be considered for all children with periventricular hemorrhagic infarction/periventricular venous infarction; and genes should be investigated first.

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