A novel SOD1 gene mutation in a Korean family with amyotrophic lateral sclerosis.
BACKGROUND
Superoxide dismutase 1 (SOD1) gene mutations are responsible for approximately 20% of all familial amyotrophic lateral sclerosis (ALS) cases. However, these cases, especially those with SOD1 gene mutations, have not been reported in Korea.


OBJECTIVE
The SOD1 gene in Korean family with ALS was screened for potential mutations and the clinical data was collected.


METHODS
The clinical histories and neurological findings of the family members were obtained. Genomic DNA was isolated from the leukocytes of whole blood samples and the coding region of the SOD1 gene was analyzed by PCR and sequencing.


RESULTS
The family with ALS showed a novel missense mutation in the SOD1 gene, which was heterozygous for the mutation, GGC to GTT, causing the substitution of valine for glycine at codon 10 (Gly10Val) in exon 1. Clinically, the patients exhibited early onset and rapid disease progression.


CONCLUSIONS
Familial ALS with a novel Gly10Val mutation in the SOD1 gene showed severe clinical features. The mutation lies in a region involved in a dimer contact in the three-dimensional structure of the SOD1 protein. This study expands the number of ALS-associated SOD1 gene mutations.
Kim
Nam-Hee
NH
Department of Neurology, College of Medicine, Seoul National University, Seoul, South Korea.
Kim
Hyun-Jung
HJ
Kim
Manho
M
Lee
Kwang-Woo
KW
D000328:Adult; D000595:Amino Acid Sequence; D019943:Amino Acid Substitution; D005260:Female; D006801:Humans; D007723:Korea; D008297:Male; D016472:Motor Neuron Disease / Q000235:genetics*; D009154:Mutation; D020125:Mutation, Missense; D010375:Pedigree; D013482:Superoxide Dismutase / Q000235:genetics*; D000072105:Superoxide Dismutase-1
C000606290:SOD1 protein, human; D013482:Superoxide Dismutase; D000072105:Superoxide Dismutase-1