Chudley-McCullough Syndrome: A Recognizable Clinical Entity Characterized by Deafness and Typical Brain Malformations

Aglaë Blauen, Chloe A Stutterd, Katrien Stouffs, Dana Dumitriu, Naima Deggouj, Paul J Lockhart, Richard J Leventer, Marie-Cécile Nassogne, Anna C Jansen

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Chudley-McCullough syndrome, a rare autosomal recessive disorder due to pathogenic variants in the GPSM2 (G-protein signaling modulator 2) gene, is characterized by early-onset sensorineural deafness and a typical combination of brain malformations, including ventriculomegaly, (partial) agenesis of the corpus callosum, cerebellar dysplasia, arachnoid cysts, frontal subcortical heterotopia, and midline polymicrogyria. When hearing loss is managed early, most patients have minor or no impairment of motor and cognitive development, despite the presence of brain malformations. We report 2 cases of Chudley-McCullough syndrome, one presenting with congenital deafness and normal development except for speech delay and one presenting prenatally with ventriculomegaly and an atypical postnatal course characterized by epileptic spasms, deafness, and moderate intellectual disability. These highlight the challenges faced by clinicians when predicting prognosis based on pre- or postnatal imaging of brain malformations. We have also reviewed the phenotype and genotype of previous published cases to better understand Chudley-McCullough syndrome.

Original languageEnglish
Pages (from-to)152-158
Number of pages7
JournalJournal of Child Neurology
Volume36
Issue number2
DOIs
Publication statusPublished - Feb 2021

Keywords

  • GPSM2
  • cerebellar hypoplasia
  • corpus callosum dysgenesis
  • frontal dysplasia
  • polymicrogyria
  • ventriculomegaly

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