Neurologic manifestations in 18q- syndrome.
We report a mother and son with a deletion at 18q22.3. Both have the typical manifestations of the 18q- syndrome. In addition, both have an action tremor which became apparent in childhood. The mother subsequently developed chorea and dysmetria in late adolescence. Magnetic resonance imaging of their brains showed poor myelination of the central white matter tracts with relatively normal myelination of the corpus callosum. We propose that these neurologic findings are most likely due to a failure of expression of the myelin basic protein gene.
Department of Pediatrics, Milton S. Hershey Medical Center, Pennsylvania State University, Hershey 17033.
G
G
Miller
P N
PN
Mowrey
K D
KD
Hopper
C A
CA
Frankel
R L
RL
Ladda
D000015:Abnormalities, Multiple / Q000235:genetics*; D000328:Adult; D001921:Brain / Q000002:abnormalities* / Q000473:pathology; D002872:Chromosome Deletion; D002887:Chromosomes, Human, Pair 18; D004423:Ear / Q000002:abnormalities; D005260:Female; D006801:Humans; D007223:Infant; D008279:Magnetic Resonance Imaging; D008297:Male; D004676:Myelin Basic Protein / Q000235:genetics; D014202:Tremor / Q000235:genetics
D004676:Myelin Basic Protein