Genetic heterogeneity of megalencephalic leukoencephalopathy and subcortical cysts.
Reported are the clinical, neuroradiologic, and molecular findings in 18 patients with megalencephalic leukoencephalopathy and subcortical cysts (MLC) syndrome. Marked clinical intrafamilial and interfamilial variability in mutation-proven cases was found. A broad spectrum of pathogenetic mutations (missense, splice site, insertion, and deletions) were identified in the MLC1 gene, enlarging the spectrum of allelic variants without a straightforward genotype-phenotype correlation. Five patients did not harbor mutations in MLC1, supporting the existence of at least one other MLC locus.
Patrono
C
C
Unit of Molecular Medicine and Division of Pediatric Neurology, Bambino Gesù Children's Hospital, Rome, Italy.
Di Giacinto
G
G
Eymard-Pierre
E
E
Santorelli
F M
FM
Rodriguez
D
D
De Stefano
N
N
Federico
A
A
Gatti
R
R
Benigno
V
V
Megarbané
A
A
Tabarki
B
B
Boespflug-Tanguy
O
O
Bertini
E
E
D000293:Adolescent; D000328:Adult; D000352:Africa, Northern; D020739:Brain Diseases, Metabolic, Inborn / Q000208:ethnology / Q000235:genetics*; D002648:Child; D002675:Child, Preschool; D002892:Chromosomes, Human, Pair 22 / Q000235:genetics; D003560:Cysts / Q000208:ethnology / Q000235:genetics; D004252:DNA Mutational Analysis; D005091:Exons / Q000235:genetics; D005260:Female; D016368:Frameshift Mutation; D005602:France; D005838:Genotype; D006801:Humans; D007558:Italy; D008297:Male; D008565:Membrane Proteins / Q000235:genetics*; D020125:Mutation, Missense; D014421:Turkey
C425069:MLC1 protein, human; D008565:Membrane Proteins