Abstract:
:Silver syndrome/SPG17 is a motor manifestation of mutations in the BSCL2 gene and usually presents as a complicated form of hereditary spastic paraplegia (HSP). We present clinical data, follow-up, and genetic results of seven patients with Silver syndrome/SPG17 including a family with a variable intrafamilial phenotype ranging from subclinical signs to a severe and rapidly progressing amyotrophic lateral sclerosis (ALS)-like phenotype. For molecular diagnosis of the family, we used the TruSight Exome sequencing panel consisting of 2761 genes. We filtered for variants common to affected family members and for exclusive variants in the ALS-like index patient to find possible modifier mutations. We found that de novo mutations and/or incomplete penetrance in BSCL2 has been taken into account for Silver syndrome/SPG17 and confirm the large phenotypical heterogeneity of BSCL2 mutations. Our findings broaden the reported spectrum of the disease to an ALS-like and multifocal motor neuropathy phenotype and underline the need for further research for genetic modifiers due to the striking interindividual and intrafamilial variability.
journal_name
J Neuroljournal_title
Journal of neurologyauthors
Musacchio T,Zaum AK,Üçeyler N,Sommer C,Pfeifroth N,Reiners K,Kunstmann E,Volkmann J,Rost S,Klebe Sdoi
10.1007/s00415-016-8301-2subject
Has Abstractpub_date
2017-01-01 00:00:00pages
11-20issue
1eissn
0340-5354issn
1432-1459pii
10.1007/s00415-016-8301-2journal_volume
264pub_type
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