TY - JOUR
T1 - Novel compound heterozygous spatacsin mutations in a Greek kindred with hereditary spastic paraplegia SPG11 and dementia
AU - Fraidakis, Matthew J.
AU - Brunetti, Maura
AU - Blackstone, Craig
AU - Filippi, Massimo
AU - Chiò, Adriano
PY - 2016/9/1
Y1 - 2016/9/1
N2 - SPG11 belongs to the autosomal recessive hereditary spastic paraplegias (HSP) and presents during childhood or puberty with a complex clinical phenotype encompassing learning difficulties, ataxia, peripheral neuropathy, amyotrophy, and mental retardation. We hereby present the case of a 30-year-old female patient with complex autosomal recessive HSP with thinning of the corpus callosum (TCC) and dementia that was compound heterozygous with two novel mutations in the SPG11 gene. Sequence analysis of the SPG11 gene revealed two novel mutations in a compound heterozygous state in the index patient (c.2431C>T/p.Gln811Ter and c.6755-6756insT/p.Glu2252Aspfs∗88). MRI showed abnormal TCC, white matter (WM) hyperintensities periventricularly, and the 'ears of the lynx' sign. Diffusion tensor imaging showed a mild-to-moderate decrease in fractional anisotropy and an increase in mean diffusivity in WM compared to age-matched controls, while magnetic resonance spectroscopy showed abnormal findings in affected WM with a decrease in N-acetyl-aspartate in WM regions of interest. This is the first SPG11 kindred from the Greek population to be reported in the medical literature.
AB - SPG11 belongs to the autosomal recessive hereditary spastic paraplegias (HSP) and presents during childhood or puberty with a complex clinical phenotype encompassing learning difficulties, ataxia, peripheral neuropathy, amyotrophy, and mental retardation. We hereby present the case of a 30-year-old female patient with complex autosomal recessive HSP with thinning of the corpus callosum (TCC) and dementia that was compound heterozygous with two novel mutations in the SPG11 gene. Sequence analysis of the SPG11 gene revealed two novel mutations in a compound heterozygous state in the index patient (c.2431C>T/p.Gln811Ter and c.6755-6756insT/p.Glu2252Aspfs∗88). MRI showed abnormal TCC, white matter (WM) hyperintensities periventricularly, and the 'ears of the lynx' sign. Diffusion tensor imaging showed a mild-to-moderate decrease in fractional anisotropy and an increase in mean diffusivity in WM compared to age-matched controls, while magnetic resonance spectroscopy showed abnormal findings in affected WM with a decrease in N-acetyl-aspartate in WM regions of interest. This is the first SPG11 kindred from the Greek population to be reported in the medical literature.
KW - Diffusion tensor imaging
KW - Hereditary spastic paraparesis
KW - Leukoencephalopathy
KW - Neurogenetics
KW - Spatacsin
UR - http://www.scopus.com/inward/record.url?scp=84976318081&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84976318081&partnerID=8YFLogxK
U2 - 10.1159/000444715
DO - 10.1159/000444715
M3 - Article
VL - 16
SP - 373
EP - 381
JO - Neurodegenerative Diseases
JF - Neurodegenerative Diseases
SN - 1660-2854
IS - 5-6
ER -