Is there a correlation between cerebral and muscular phenotypes in congenital muscular dystrophy linked to the LAMA2 gene?

Brazilian clinicians have compiled clinical data and brain imaging results from patients with merosine deficiency (congenital muscular dystrophy linked to the LAMA2 gene) with a view to establishing potential correlations between muscle phenotype and brain damage:

  • fifty-two patients were included in the study, the vast majority of whom were non-ambulatory (85%),
  • 19% had significant malformations, 19% had epilepsy and 15% had an intellectual deficit,
  • the presence of cortical malformations was significantly correlated with the severity of the muscular phenotype.

In addition, the authors point to the existence of a highly probable genetic founder effect in this cohort.

 

Brain MRI Abnormalities, Epilepsy and Intellectual Disability in LAMA2 Related Dystrophy – a Genotype/Phenotype Correlation. Camelo CG, Artilheiro MC, Martins Moreno CA et al. J Neuromuscul Dis. 2023 May