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Hereditary diffuse leukoencephalopathy with spheroids with phenotype of primary progressive multiple sclerosis

Journal article
Authors Christina Sundal
M Baker
V Karrenbauer
M Gustavsen
S Bedri
A Glaser
K-M Myhr
K Haugarvoll
Henrik Zetterberg
H Harbo
I Kockum
J Hillert
Z Wszolek
R Rademakers
Oluf Andersen
Published in European Journal of Neurology
Volume 22
Issue 2
Pages 328-333
ISSN 1351-5101
Publication year 2015
Published at Institute of Neuroscience and Physiology, Department of Clinical Neuroscience and Rehabilitation
Institute of Biomedicine
Pages 328-333
Language en
Keywords Hereditary leukoencephalopathy with spheroids, multiple sclerosis, phenotype, HDLS, PPMS, domnant heredity
Subject categories Neurology


Background and purpose Hereditary diffuse leukoencephalopathy with spheroids (HDLS) is a devastating, hereditary white matter (WM) disorder with heterogeneous neuropsychiatric features. Colony stimulating factor 1 receptor (CSF1R) mutations were looked for in primary progressive multiple sclerosis (PPMS) patients and the clinical features of a family with a novel CSF1R mutation are reported. Methods CSF1R exons 12−22 in a cohort of 220 PPMS patients from the Swedish and Norwegian national multiple sclerosis registries were sequenced. Results One patient had a novel mutation, c.2562T>A; p.Asn854Lys, in the CSF1R gene. Her symptoms started at the age of 29 years with insidious onset of pyramidal weakness in the left leg. The cerebrospinal fluid examination showed four intrathecal immunoglobulin G bands. A magnetic resonance imaging scan performed 4 years after symptom onset demonstrated patchy deep WM lesions. She was diagnosed as having PPMS and treated with intramuscular interferon beta 1a. Due to slow disease progression, the development of memory decline and cerebellar signs, she was given subcutaneous interferon beta 1a without any benefit. The updated pedigree indicated that five siblings also had the CSF1R gene mutation; one was diagnosed with PPMS. Six more distant relatives also had a neurological disorder; four were clinically diagnosed with PPMS. Conclusions Our study indicates that a chronic course of HDLS may mimic PPMS. Genetic testing for CSF1R gene mutations in PPMS cases with a positive family history of neurological disorders may establish the diagnosis of HDLS.

Page Manager: Webmaster|Last update: 9/11/2012

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