A case of hereditary diffuse leukoencephalopathy with axonal spheroids caused by a de novo mutation in CSF1R masquerading as primary progressive multiple sclerosis

Author:

Saitoh Ban-yu1,Yamasaki Ryo2,Hayashi Shintaro1,Yoshimura Satoshi1,Tateishi Takahisa1,Ohyagi Yasumasa2,Murai Hiroyuki1,Iwaki Toru3,Yoshida Kunihiro4,Kira Jun-ichi1

Affiliation:

1. Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan

2. Department of Neurological Therapeutics, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan

3. Department of Neuropathology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Japan

4. Department of Brain Disease Research, Shinshu University School of Medicine, Japan

Abstract

We report a sporadic case of hereditary diffuse leukoencephalopathy with axonal spheroids (HDLS) confirmed by biopsy and colony-stimulating factor 1 receptor ( CSF1R) sequencing. A 28-year-old woman developed progressive spastic gait and dysarthria. Brain T2/FLAIR-weighted magnetic resonance imaging showed bilateral high signal intensity lesions in the parietal deep white matter, which subsequently extended anteriorly. Biopsied brain specimens demonstrated demyelinated white matter tissue with axonal spheroids infiltrated with foamy macrophages, and CD8+ and CD4+ T cells. She had a heterozygous mutation, c.2381T>C (p.782 Ile>Thr), in CSF1R. This is the first genetically proven case of HDLS mimicking primary progressive multiple sclerosis.

Publisher

SAGE Publications

Subject

Neurology (clinical),Neurology

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