PMID- 24521565 OWN - NLM STAT- MEDLINE DCOM- 20141002 LR - 20221207 IS - 1468-330X (Electronic) IS - 0022-3050 (Linking) VI - 85 IP - 9 DP - 2014 Sep TI - Autosomal-recessive complicated spastic paraplegia with a novel lysosomal trafficking regulator gene mutation. PG - 1024-8 LID - 10.1136/jnnp-2013-306981 [doi] AB - BACKGROUND: Autosomal-recessive hereditary spastic paraplegias (AR-HSP) consist of a genetically diverse group of neurodegenerative diseases characterised by pyramidal tracts dysfunction. The causative genes for many types of AR-HSP remain elusive. We tried to identify the gene mutation for AR-HSP with cerebellar ataxia and neuropathy. METHODS: This study included two patients in a Japanese family with their parents who are first cousins. Neurological examination and gene analysis were conducted in the two patients and two normal family members. We undertook genome-wide linkage analysis employing single nucleotide polymorphism arrays using the two patients' DNAs and exome sequencing using one patient's sample. RESULTS: We detected a homozygous missense mutation (c.4189T>G, p.F1397V) in the lysosomal trafficking regulator (LYST) gene, which is described as the causative gene for Chediak-Higashi syndrome (CHS). CHS is a rare autosomal-recessive syndrome characterised by hypopigmentation, severe immune deficiency, a bleeding tendency and progressive neurological dysfunction. This mutation was co-segregated with the disease in the family and was located at well-conserved amino acid. This LYST mutation was not found in 200 Japanese control DNAs. Microscopic observation of peripheral blood in the two patients disclosed large peroxidase-positive granules in both patients' granulocytes, although they had no symptoms of immune deficiency or bleeding tendency. CONCLUSIONS: We diagnosed these patients as having adult CHS presenting spastic paraplegia with cerebellar ataxia and neuropathy. The clinical spectrum of CHS is broader than previously recognised. Adult CHS must be considered in the differential diagnosis of AR-HSP. CI - Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions. FAU - Shimazaki, Haruo AU - Shimazaki H AUID- ORCID: 0000-0003-0628-7164 AD - Division of Neurology, Department of Internal Medicine, Jichi Medical University School of Medicine, Tochigi, Japan. FAU - Honda, Junko AU - Honda J AD - Division of Neurology, Department of Internal Medicine, Jichi Medical University School of Medicine, Tochigi, Japan. FAU - Naoi, Tametou AU - Naoi T AD - Division of Neurology, Department of Internal Medicine, Jichi Medical University School of Medicine, Tochigi, Japan. FAU - Namekawa, Michito AU - Namekawa M AD - Division of Neurology, Department of Internal Medicine, Jichi Medical University School of Medicine, Tochigi, Japan. FAU - Nakano, Imaharu AU - Nakano I AD - Department of Neurology, Tokyo Metropolitan Neurological Hospital, Tokyo, Japan. FAU - Yazaki, Masahide AU - Yazaki M AD - Department of Medicine (Neurology and Rheumatology), Shinshu University School of Medicine, Nagano, Japan. FAU - Nakamura, Katsuya AU - Nakamura K AD - Department of Medicine (Neurology and Rheumatology), Shinshu University School of Medicine, Nagano, Japan. FAU - Yoshida, Kunihiro AU - Yoshida K AD - Department of Medicine (Neurology and Rheumatology), Shinshu University School of Medicine, Nagano, Japan. FAU - Ikeda, Shu-ichi AU - Ikeda S AD - Department of Medicine (Neurology and Rheumatology), Shinshu University School of Medicine, Nagano, Japan. FAU - Ishiura, Hiroyuki AU - Ishiura H AD - Department of Neurology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan. FAU - Fukuda, Yoko AU - Fukuda Y AD - Department of Neurology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan. FAU - Takahashi, Yuji AU - Takahashi Y AD - Department of Neurology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan. FAU - Goto, Jun AU - Goto J AD - Department of Neurology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan. FAU - Tsuji, Shoji AU - Tsuji S AD - Department of Neurology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan. FAU - Takiyama, Yoshihisa AU - Takiyama Y AD - Department of Neurology, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Yamanashi, Japan. LA - eng PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140212 PL - England TA - J Neurol Neurosurg Psychiatry JT - Journal of neurology, neurosurgery, and psychiatry JID - 2985191R RN - 0 (LYST protein, human) RN - 0 (Vesicular Transport Proteins) SB - IM MH - Asian People/genetics MH - Cerebellar Ataxia/complications/genetics MH - Chediak-Higashi Syndrome/complications/*genetics MH - Genetic Linkage/genetics MH - Genetic Predisposition to Disease/genetics MH - Genome-Wide Association Study MH - Humans MH - Male MH - Middle Aged MH - Mutation, Missense MH - Polymorphism, Single Nucleotide/genetics MH - Spastic Paraplegia, Hereditary/complications/*genetics MH - Vesicular Transport Proteins/*genetics OTO - NOTNLM OT - CEREBELLAR ATAXIA OT - NEUROGENETICS OT - NEUROPATHY OT - SPASTICITY EDAT- 2014/02/14 06:00 MHDA- 2014/10/03 06:00 CRDT- 2014/02/14 06:00 PHST- 2014/02/14 06:00 [entrez] PHST- 2014/02/14 06:00 [pubmed] PHST- 2014/10/03 06:00 [medline] AID - jnnp-2013-306981 [pii] AID - 10.1136/jnnp-2013-306981 [doi] PST - ppublish SO - J Neurol Neurosurg Psychiatry. 2014 Sep;85(9):1024-8. doi: 10.1136/jnnp-2013-306981. Epub 2014 Feb 12.